Saturday, September 20, 2008

Walking Meditation


by Steven Smith

In walking meditation, we become aware of the movement of each step. It is a way of using a natural part of life to increase mindfulness. Once you learn the practice, you can do it almost anywhere. It helps us feel fully present on the earth.

Find a place where you can walk back and forth, about ten to twenty steps in length. Keep the hands stationary, either behind the back, at the sides, or in front.

Feel the sensations of standing. Be aware of contact with the ground, of pressure and tension. Feel the entire energy field of the body, how it is all participating in this standing. Feel the hands hanging down...the shoulders weighted...the lower back, the pelvis...each having its own part in keeping the balance of the standing position.

Now bring your attention to the lower part of the body, from the hips downward, the primary foundation of standing. Staying aware, very slowly shift your weight from the left and back of your body to the right, noticing as you do how the sensations change as your balance shifts. Now hold your weight on the left for a moment, aware of the particular sensations in the leg... hips, thighs, legs, knees, calves, feet, toes, not particularly noticing or identifying those parts of the body, but letting the awareness fill the legs. Feel hardness, tension, tightness, heat, vibration, toughness, stiffness, whatever is there.

Now, keeping your weight on the left side, bring your awareness to the right and feel the relative lightness, emptiness, subtler sensations on the right leg. Now, with your awareness still on the right leg, slowly shift your weight to the right side. Let the awareness seep in right down to the bone, sensing the variations of hardness and softness, toughness, and fluidity, pressure, vibration, weight.

Now bring your awareness to the left side again, and move as if you are very slowly pouring water from a full vessel into an empty one. Notice all the changes as you shift your weight to the left side. With your eyes open just enough to hold your balance, very slowly peel your right foot off the ground and move it forward and place it on the ground. With your awareness on the right, shift your weight, bring awareness to the left, feel from the hips and buttocks down the sides, the whole range of sensations. Continue stepping slowly, keeping your awareness on the sensations. When you get to the end of the path, pause briefly and turn around. Center yourself, and be aware of the first step as you begin again.

You can do the walking meditation at different paces: brisk, normal, and very slow and meticulous. The idea is not to walk slowly; the idea is to move mindfully. As your mind begins to quiet, you will see how we notice more when we move slowly. More becomes clear, we get to feel the inter-relationship of mind and body.

If you like labeling, you can say to yourself "walking/walking" or "step/step," or "right/left." Not using the labeling as a cadence that becomes rote, but using it to encourage the awareness of the sensations of walking.

After some time, you can slow down a bit and actually feel more or less two sections of walking, the lift swing and the placing. So the label might be "lift" as you lift and swing, and then "place." It is a little slower, but not so slow that you lose your balance. Lifting , placing, stop. Feel the stopping, feel the turning. Lift and place, it is very simple, you are really just being with walking.

You are being really detailed, you are not assessing, you are not evaluating. It is a bare awareness, feeling the flow of sensations. When you lift, move, place, notice the shift of weight, the heel peeling off the toe, even the ground. Or you might notice the knee bending, the calf tensing, or the thigh being taut...sometimes you may notice the whole leg simultaneously, another time you might focus on tingling in the toe. Lifting, moving, placing.

Holding your visual field to a minimum--6,8,9 feet--is helpful for a period of time. Then, when you feel like you just can't take it anymore, open up your field of vision, look around, and just be aware of seeing and hearing for a while. It is important to keep a lightness of being.

If you feel flooded with thoughts, just stop for a moment and be aware of thoughts. Let the flood of thoughts come and go and then go back to the walking. You begin to see that nothing is a distraction, as long as you recognize what is there.

Think of it like this... you are starting off on a trek, and you just landed in Katmandu, You are going up to Mustang Valley....you are going to trek up one of these mountains, and there is the goal of reaching the top, there's the desire to get there, and then there's the realization that there is a whole process of getting there, and, along the way, more and more, there is the realization that the process is the goal. At first, you don't have your walking body...you have been busy and confined, muscles aren't loose, bones are a bit stiff....it takes a while for there to be a rhythm between mind and body, to get into that rhythm, to be carried by that rhythm, so that the experience becomes being carried by the mountain, and then the second winds come...and the body just feels in flow, it feels in harmony, it feels in sync with the mountain itself and the movements up and down.

It is the same way in meditation--first it's a stretch, and you feel a resistance, the push, the upward climb....but you can just take your time, keep learning how to settle back, lean back, and tune in to the process, until more and more, you feel carried by it itself, and it becomes restful.

next, Loving-Kindness Meditation

David Foster Wallace on Life and Work


from The Wall Street Journal

"This is not a matter of virtue -- it's a matter of my choosing to do the work
of somehow altering or getting free of my natural, hard-wired default-setting,
which is to be deeply and literally self-centered, and to see and interpret
everything through this lens of self."

http://reno.wsj.com/article/SB122178211966454607.html

Wednesday, September 10, 2008

The Benefits of Biofeedback



It's gaining ground as a stress-management tool

Because she was planning to get pregnant, Janelle (who preferred not to give her last
name) decided last year to go off powerful medication for stress-induced migraines in
favor of a more fetus-friendly therapy.

With sensors attached to her fingertips, neck, and abdomen, she spent 20 sessions
learning to relax her muscles and slow her breathing and heart rate while watching a
computer monitor for proof of the desired result. Eventually, she was able to do the
work on her own. "The migraine pain doesn't go away completely," says the 39-year
old from Bethesda, Md., who has remained off medication since her son's birth two
months ago. "But it's been greatly reduced, and I'm able to deal with it better."

Like meditation and yoga, the biofeedback method that Janelle now swears by is
enjoying a sort of renaissance; while it's been around for some 40 years, a growing
body of research has brought it to the mainstream, indicating that it can relieve some
hard-to-manage conditions exacerbated by stress. Many major hospitals and clinics,
including Harvard's Brigham and Women's Hospital and Duke University Medical Center,
now offer biofeedback to people with hypertension and jaw pain as well as headaches,
for example. And new pocket-size gadgets have hit the market that let you do it yourself.

Biofeedback's major appeal is that one series of sessions purportedly teaches a set of
skills you can use for life—without side effects. And it's pre-emptive. "Biofeedback teaches
you to identify early signs that stress is starting to get to you and to bring that stress
reaction down before it causes physical symptoms," explains Frank Andrasik, a professor
of psychology at the University of West Florida in Pensacola who serves as editor-in-chief
of the journal Applied Psychophysiology and Biofeedback.

Instructions on a computer screen tell you when to inhale and exhale, for example, so
that you practice slowing down, ideally to about six breaths per minute. The point is to
calm your body's autonomic nervous system, which raises your blood pressure and heart
rate when you're stressed. One important effect: an increase in your "heart rate variability,"
those subtle moment-to-moment fluctuations in the pace of your heartbeat.

Research suggests that lower variability is associated with a higher risk of dying from heart
disease. Tall, even waves cross the computer screen as your breathing slows and the stress
response calms; the waves are short and spiky when you're on edge. Sensors also detect an
increase in your hand's skin temperature, a sign you've lowered the level of "fight or flight"
stress hormones that shunt blood away from your extremities and have entered a state
practitioners call "focused calm." The key is to practice so that you get there automatically
when the traffic jams or the boss screams.

In part, biofeedback's resurgence stems from technological advances that provide instant,
easy-to-understand information, says social worker Mary Lee Esty, head of the Neurotherapy
Center in Bethesda, where Janelle was treated. One computer software program displays an
open-mouthed smiling dolphin when all systems are calm and then jumbles the photo if
breathing becomes uneven or rapid. "The timing of the feedback is absolutely critical to
learning what feels right," Esty explains.

Still seeking proof.

Whether biofeedback actually teaches permanent skills remains unproven. But some long-term
studies suggest that patients are still employing the techniques successfully years later. And
though there's evidence that the therapy works better than sham treatments to lower stress-
related aches and pains, it hasn't been tested against standard treatments like aspirin for tension
headaches—though for many people, like Janelle, getting off medication is the goal. A study
published last year in the Journal of Alternative and Complementary Medicine found that people
with mild hypertension who had four weekly sessions of biofeedback experienced a significantly
greater lowering of their blood pressure than those who had stress reduction training without
the feedback.

Evidence is stronger, Andrasik says, that biofeedback helps with non-stress-related conditions
like chronic constipation and urinary incontinencee, where it's used to retrain the muscles
involved in waste elimination. A newer technique called neurofeedback, which uses scalp
sensors to measure brain waves, appears promising for helping restore normal brain wave
function disrupted by head injuries, post-traumatic stress disorder, and severe migraines.

The biggest caveat for many people will be lack of insurance coverage. While Aetna and
Kaiser Permanente cover biofeedback for certain stress-related conditions, many companies
don't. The Neurotherapy Center's five-session treatment plan for stress costs about $500;
Janelle's 20 sessions—typical for migraine patients—cost her $2,000 out of pocket.

If you proceed, be sure your practitioner is certified by the Biofeedback Certification Institute
of America, since anyone can hang out a shingle; typically, certified practitioners are also
licensed psychologists. Realize, too, that long-term success often rests, literally, in the hands
of the patient. Psychologist Deborah Stokes, who practices biofeedback in Alexandria, Va., t
ells her patients to practice warming their hands—using a $20 home device from Bio-Medical
Instruments—for 20 minutes a night between sessions. Janelle says she still occasionally
practices the techniques she learned and called on them during childbirth. "It really helped
me focus," she says. "I was able to give birth without an epidural."

By Deborah Kotz, US News & World Report

Thursday, August 14, 2008

Aikido as Bodywork


(Note the highlighted text in the following article by Ellis Amdur )

Aikido is Three Peaches - Part I

It is very significant that Ueshiba Kishomaru wrote about the book, Takemusu Aiki (reprinted in four sections in Aikido Journal recently) that it is the work most representative of O-sensei’s thinking… . It occurs to me, then, that perhaps we should take him at his word. When Tohei Koichi derisively comments on Ueshiba’s explanations of aikido, saying that all he learned from O-Sensei was the concept of relaxation, but otherwise scorns Ueshibas statements as incoherent gibberish, is it possible that, although Tohei allegedly became a master at relaxing his body in martial arts training exercises, he simply did not understand that Ueshiba was using HIS relaxed body to accomplish very different aims?

It is quickly apparent that what makes O-Sensei even more difficult to understand than he otherwise would be is due to the fact that he freely mixes classical Shinto, Buddhism, Taoism and neo-Shinto concepts and images, often within a single paragraph. But if one claims that Ueshiba’s explanations of Takemusu Aiki were extraneous to the real thing - shihonage/irimi-nage, or aiki-social-work, or relaxation - then we are also choosing to regard him as an idiot savant, one of those eccentrics who, amidst the babble of his autistic process, somehow stumbles on valuable information.

In Ueshiba’s first statements, he defines aikido as the Way of union and harmony of Heaven, Earth, and Humanity. Note that very significant trinity, which later, one footnote suggests, come into fruition in a circle. He gives many definitions of aikido, but I see a trinity here as well: as a purification rite, as a procedure to make kotodama possible, and a means of protection of all of creation.

Ueshiba defines the aikido practitioner as one who assists in the administration of the Universe by serving as a sword. Note: “as a sword,” not “with a sword.” It is significant that he uses the word tsurugi rather than katana. The straight sword was associated with ancient days and ancient ways, the primordial semi-myth, semi-history of the Yamato people who are described in Kojiki. Therefore, he is very clearly not saying that aikidoka should become God’s sheriff, wandering the world and righting wrongs. This is a spiritual pursuit, not a vigilante activity.

Ueshiba states that the primary divine work is … “unifying with God in harmony.” It is remarkable that Ueshiba states that in putting spirit and body in order, these are independent of each other. In short, spiritual austerities OR practice of the martial art of aikido are each only half of aikido. The realization of this harmony will not take place through prayer or meditation or good works or any other spiritual practice, nor will it take place merely by practicing aikido in our Yoshinkan, Aikikai, Ki no Kenkyukai or other training halls. These two activities must be pursued in parallel, not together. Thus, one can’t train the spirit simply by a sufficiency of tenchinage.

He likens aikido to the work of insects, fish, birds, and other animals in cleaning up impurities. By using this image, he is saying that just as that which makes an insect most insect is its chewing up rotten wood or carrion, that which makes a human being truly human is purifying ourselves from all sins and impurities. This, he is saying, is why we are alive.

In Part 2 of his first talk, he once again offers that infuriating and inspiring concept that Aikido is the work of love. And this love is very clearly linked in the meandering exposition that follows with a fundamental rupture between the two creator gods, Izanagi and Izanami. In brief, these two deities who exemplify the yin and yang forces of the cosmos, are divorced due to their creativity. Izanami is so damaged by her birthing of the fire god that she passes on to the underworld. Izanagi, in a near-mirror image of the Greek myth of Orpheus and Eurydice, misses his wife dearly, and goes down to Hades to see her. He is horrified by her disfigurement, and she is enraged by his rejection. She pursues him, first by agents that are emanations of herself (a she-demon, and an army). Izanagi forestalls the former with a sword and the latter by casting three peaches behind him. Fiinally Izanami herself pursues him, only to be blocked by a huge boulder at the doorway between the two realms. Consider the archetypal meaning here. Izanami is terribly damaged in giving birth, (creation bears destruction within it), and the demonic resides within the most beneficent of forces. Izanagi gives his wife no compassion whatsoever, even though she was destroyed giving birth to his son. There is a fundamental rupture between the worlds. Izanami threatens to kill a thousand people a day, and Izanagi counters by saying he will build 1500 birth huts a day.

O-Sensei states that aikido is the three peaches cast behind Izanagi to forestall Izanami’s hellish minions. They are not the agent of reunification of these two dieties; they are the means to keep each divine energy in its proper realm. He states that the practice of aikido is the embracing of the three worlds: the world of Appearance, the Subconscious World, the Divine world. Note that the subconscious world is elsewhere defined as Hades. Therefore, unlike a simple dualism of Yin and Yang, which merely must be balanced, in Ueshiba’s cosmos the human being provides a vital third force, emanating from the world of Appearances. Rather than a happy-ever-after fairly tale of reunification of estranged deities, humanity, through aikido, keeps things in their proper realm. Harmony, not merger. What makes aikido martial, what makes it a manifestation of the sword (tsurugi) rather than mere meditation is that, like the three peaches (yet another trinity) cast behind Izanagi, it maintains the forces of the universe in their proper roles.

I am less qualified to discuss kotodama than any other area in Ueshiba’s talk, but it seems clear that he is mapping out the energies of the cosmos, and procedures to shape and work these energies in order to advance toward the perfection of the entire world in order to establish a Heaven on Earth. In short, when Heaven is ON Earth, the trinity of the three worlds with become the circle, with Heaven, Earth and Humanity in harmony.

My thesis here is supported because Ueshiba clearly states that not only are the sins of humanity purged through Takemusu Aiki, but, he states, those of the entire Universe. The universe rests on three poles, one of which is humanity itself. The means to universal purification is kotodama. Aiki’s role in this, he states, is to protect love. Once again, aikido’s function in Ueshiba’s cosmos is the application of a protective force that enables the work of kotodama to occur.

Ueshiba describes himself as a deity - both Fudomyo, a deity to defeat evil, and a Boddhisatva, (a not-exactly-divine-but-somehow-closely-so) human who has devoted his life to the salvation of all beings. He then states, “I asked questions to myself and then understood. I have the universe inside me. Everything is in me. I am the Universe itself so there is no me. Moreover, since I am the Universe there is only me and no other.” If this is, to use the psychological term, a grandiose narcissistic inflation, then one can understand the irritation of those like Tohei. But if I might allow myself an editorial koan, “Jorai asked, ‘Do the grandiose narcissistically inflated have the Buddha nature?’ Senzan replied, ‘SUUUUUUUUU’”

When Ueshiba describes aikido as a religion without being a religion, he is stating that aikido vivifies religion from empty spiritualism, because of its dynamic qualities: it purifies, it actively relegates energies to their proper realm and it is, by definition, that which protects.

Ueshiba beautifully states, “The Earth has already been perfected…. Only humanity has not yet completed itself. This is because sins and impurities have penetrated into us. The forms of aikido techniques are preparation to unlock and soften all joints of our body.” ATTENTION HE JUST EXPLAINED AIKIDO PRACTICE!!!!! He defines why and how he created his method of training, distilled from his previous martial studies, why he selected out the techniques he did, and why he excluded others.

Practice is for the purpose of creating a body that is not only analogous to the enlightened spirit, but makes the enlightened spirit possible. He concludes his first talk: “Thus, aikido harmonizes with all nature while purifying sins and impurities. I, Ueshiba, would like to repair and firmly rebuild this world in correct order through the gate of martial arts.”

To bring this back to the mundane, I certainly do not see this as a prohibition into the research of technique. But it is clear that anything, however practiced, that would interfere with the simultaneous functions of purification and protection of the ordering of the universe, so that the divine work (kotodama) can take place, cannot be termed Ueshiba’s aikido.

Finally, speaking of narcissistic inflation, I am anything but a scholar, and I simply skipped a lot of things in the first essay - doctrine, detailed exposition of cosmology - that I don’t know anything about. But what I do understand seems quite clear to me. Rather than dismissing Ueshiba as speaking incoherent archaic mysticism, I believe that he left us a clear statement of what he was trying to accomplish, one that makes aikido far more challenging and enthralling than the idea that it’s watered-down Daito-ryu for the masses; that it’s a merely a method of conflict resolution techniques, sketched out physically, so we can integrate them in our psychology sessions or human resources actions; that it’s “love” as defined in Western terms such as agape or caritas; or that it is a martial art that’s “just as tough as yours is.” Any and all of these may be useful and even true, but I hope I’ve been able to illustrate that Ueshiba clearly said he was doing something else. Clearly - not obscurely at all. Given a spare moment and the blessings of the gods of the purple smoke, I may try again with some of his later essays at another time.

Author: Dueling with O-Sensei & Old School, as well as the new Instructional DVD: “Ukemi from the Ground Up.”

www.ellisamdur.com


Saturday, August 2, 2008

Brain Injury Checklist

SYMPTOMS OF BRAIN INJURY

Any brain function can be disrupted by brain trauma: excessive sleepiness, inattention, difficulty concentrating, impaired memory, faulty judgment, depression, irritability, emotional outbursts, disturbed sleep, diminished libido, difficulty switching between two tasks, and slowed thinking. Sorting out bonafide brain damage from the effects of migraine headaches, pain elsewhere in the body, medications, depression, preoccupation with financial loss, job status, loss of status in the community, loss of status in the family, and any ongoing litigation can be a formibable task.

The extent and the severity of cognitive neurologic dysfunction can be measured with the aid of neuropsychological testing. Neuropsychologists use their tests to localize dysfunction to specific areas of the brain. For example, the frontal lobes play an essential role in drive, mood, personality, judgment, interpersonal behavior, attention, foresight, and inhibition of inappropriate behavior. The ability to plan properly and execute those plans is known as "executive function." Frontal lobe injury is often associated with damage to the olfactory bulbs beneath the frontal lobes. Patients may note reduced or altered sense of smell. One recent study (Varney 1993) showed that 92% of brain injured patient suffering anosmia (loss of smell) had ongoing problems with employment, even though their neuropsychological testing was relatively normal.

The effects of brain injury on the patient may be equaled or even surpassed by the effect on the patient's family. Brain injuries are known for causing extreme stressors in family and interpersonal relationships.

In general, symptoms of traumatic brain injury should lessen over time as the brain heals but sometimes the symptoms worsen because of the patient's inability to adapt to the brain injury. For this and other reasons, it is not uncommon for psychological problems to arise and worsen after brain injury.







SYMPTOM CHECKLIST

A wide variety of symptoms can occur after "brain injury." The nature of the symptoms depends, in large part, on where the brain has been injured. Below find a list of possible physical and cognitive symptoms which can arise from damage to specific areas of the brain:



Frontal Lobe: Forehead
  • Loss of simple movement of various body parts (Paralysis).
  • Inability to plan a sequence of complex movements needed to complete multi-stepped tasks, such as making coffee (Sequencing).
  • Loss of spontaneity in interacting with others.
  • Loss of flexibility in thinking.
  • Persistence of a single thought (Perseveration).
  • Inability to focus on task (Attending).
  • Mood changes (Emotionally Labile).
  • Changes in social behavior.
  • Changes in personality.
  • Difficulty with problem solving.
  • Inability to express language (Broca's Aphasia).

Parietal Lobe: near the back and top of the head
  • Inability to attend to more than one object at a time.
  • Inability to name an object (Anomia).
  • Inability to locate the words for writing (Agraphia).
  • Problems with reading (Alexia).
  • Difficulty with drawing objects.
  • Difficulty in distinguishing left from right.
  • Difficulty with doing mathematics (Dyscalculia).
  • Lack of awareness of certain body parts and/or surrounding space (Apraxia) that leads to difficulties in self-care.
  • Inability to focus visual attention.
  • Difficulties with eye and hand coordination.

Occipital Lobes: most posterior, at the back of the head
  • Defects in vision (Visual Field Cuts).
  • Difficulty with locating objects in environment.
  • Difficulty with identifying colors (Color Agnosia).
  • Production of hallucinations.
  • Visual illusions - inaccurately seeing objects.
  • Word blindness - inability to recognize words.
  • Difficulty in recognizing drawn objects.
  • Inability to recognize the movement of object (Movement Agnosia).
  • Difficulties with reading and writing.

Temporal Lobes: side of head above ears
  • Difficulty in recognizing faces (Prosopagnosia).
  • Difficulty in understanding spoken words (Wernicke's Aphasia).
  • Disturbance with selective attention to what we see and hear.
  • Difficulty with identification of, and verbalization about objects.
  • Short term memory loss.
  • Interference with long term memory.
  • Increased and decreased interest in sexual behavior.
  • Inability to catagorize objects (Categorization).
  • Right lobe damage can cause persistent talking.
  • Increased aggressive behavior.

Brain Stem: deep within the brain
  • Decreased vital capacity in breathing, important for speech.
  • Swallowing food and water (Dysphagia).
  • Difficulty with organization/perception of the environment.
  • Problems with balance and movement.
  • Dizziness and nausea (Vertigo).
  • Sleeping difficulties (Insomnia, sleep apnea).

Cerebellum: base of the skull
  • Loss of ability to coordinate fine movements.
  • Loss of ability to walk.
  • Inability to reach out and grab objects.
  • Tremors.
  • Dizziness (Vertigo).
  • Slurred Speech (Scanning Speech).
  • Inability to make rapid movements.

Friday, July 25, 2008

Is Google Making Us Stupid?

What the Internet is doing to our brains

by Nicholas Carr

"Dave, stop. Stop, will you? Stop, Dave. Will you stop, Dave?” So the supercomputer HAL pleads with the implacable astronaut Dave Bowman in a famous and weirdly poignant scene toward the end of Stanley Kubrick’s 2001: A Space Odyssey. Bowman, having nearly been sent to a deep-space death by the malfunctioning machine, is calmly, coldly disconnecting the memory circuits that control its artificial »

brain. “Dave, my mind is going,” HAL says, forlornly. “I can feel it. I can feel it.”

I can feel it, too. Over the past few years I’ve had an uncomfortable sense that someone, or something, has been tinkering with my brain, remapping the neural circuitry, reprogramming the memory. My mind isn’t going—so far as I can tell—but it’s changing. I’m not thinking the way I used to think. I can feel it most strongly when I’m reading. Immersing myself in a book or a lengthy article used to be easy. My mind would get caught up in the narrative or the turns of the argument, and I’d spend hours strolling through long stretches of prose. That’s rarely the case anymore. Now my concentration often starts to drift after two or three pages. I get fidgety, lose the thread, begin looking for something else to do. I feel as if I’m always dragging my wayward brain back to the text. The deep reading that used to come naturally has become a struggle.

I think I know what’s going on. For more than a decade now, I’ve been spending a lot of time online, searching and surfing and sometimes adding to the great databases of the Internet. The Web has been a godsend to me as a writer. Research that once required days in the stacks or periodical rooms of libraries can now be done in minutes. A few Google searches, some quick clicks on hyperlinks, and I’ve got the telltale fact or pithy quote I was after. Even when I’m not working, I’m as likely as not to be foraging in the Web’s info-thickets—reading and writing e-mails, scanning headlines and blog posts, watching videos and listening to podcasts, or just tripping from link to link to link. (Unlike footnotes, to which they’re sometimes likened, hyperlinks don’t merely point to related works; they propel you toward them.)

For me, as for others, the Net is becoming a universal medium, the conduit for most of the information that flows through my eyes and ears and into my mind. The advantages of having immediate access to such an incredibly rich store of information are many, and they’ve been widely described and duly applauded. “The perfect recall of silicon memory,” Wired’s Clive Thompson has written, “can be an enormous boon to thinking.” But that boon comes at a price. As the media theorist Marshall McLuhan pointed out in the 1960s, media are not just passive channels of information. They supply the stuff of thought, but they also shape the process of thought. And what the Net seems to be doing is chipping away my capacity for concentration and contemplation. My mind now expects to take in information the way the Net distributes it: in a swiftly moving stream of particles. Once I was a scuba diver in the sea of words. Now I zip along the surface like a guy on a Jet Ski.

I’m not the only one. When I mention my troubles with reading to friends and acquaintances—literary types, most of them—many say they’re having similar experiences. The more they use the Web, the more they have to fight to stay focused on long pieces of writing. Some of the bloggers I follow have also begun mentioning the phenomenon. Scott Karp, who writes a blog about online media, recently confessed that he has stopped reading books altogether. “I was a lit major in college, and used to be [a] voracious book reader,” he wrote. “What happened?” He speculates on the answer: “What if I do all my reading on the web not so much because the way I read has changed, i.e. I’m just seeking convenience, but because the way I THINK has changed?”

Bruce Friedman, who blogs regularly about the use of computers in medicine, also has described how the Internet has altered his mental habits. “I now have almost totally lost the ability to read and absorb a longish article on the web or in print,” he wrote earlier this year. A pathologist who has long been on the faculty of the University of Michigan Medical School, Friedman elaborated on his comment in a telephone conversation with me. His thinking, he said, has taken on a “staccato” quality, reflecting the way he quickly scans short passages of text from many sources online. “I can’t read War and Peace anymore,” he admitted. “I’ve lost the ability to do that. Even a blog post of more than three or four paragraphs is too much to absorb. I skim it.”

Anecdotes alone don’t prove much. And we still await the long-term neurological and psychological experiments that will provide a definitive picture of how Internet use affects cognition. But a recently published study of online research habits, conducted by scholars from University College London, suggests that we may well be in the midst of a sea change in the way we read and think. As part of the five-year research program, the scholars examined computer logs documenting the behavior of visitors to two popular research sites, one operated by the British Library and one by a U.K. educational consortium, that provide access to journal articles, e-books, and other sources of written information. They found that people using the sites exhibited “a form of skimming activity,” hopping from one source to another and rarely returning to any source they’d already visited. They typically read no more than one or two pages of an article or book before they would “bounce” out to another site. Sometimes they’d save a long article, but there’s no evidence that they ever went back and actually read it. The authors of the study report:

It is clear that users are not reading online in the traditional sense; indeed there are signs that new forms of “reading” are emerging as users “power browse” horizontally through titles, contents pages and abstracts going for quick wins. It almost seems that they go online to avoid reading in the traditional sense.

Thanks to the ubiquity of text on the Internet, not to mention the popularity of text-messaging on cell phones, we may well be reading more today than we did in the 1970s or 1980s, when television was our medium of choice. But it’s a different kind of reading, and behind it lies a different kind of thinking—perhaps even a new sense of the self. “We are not only what we read,” says Maryanne Wolf, a developmental psychologist at Tufts University and the author of Proust and the Squid: The Story and Science of the Reading Brain. “We are how we read.” Wolf worries that the style of reading promoted by the Net, a style that puts “efficiency” and “immediacy” above all else, may be weakening our capacity for the kind of deep reading that emerged when an earlier technology, the printing press, made long and complex works of prose commonplace. When we read online, she says, we tend to become “mere decoders of information.” Our ability to interpret text, to make the rich mental connections that form when we read deeply and without distraction, remains largely disengaged.

Reading, explains Wolf, is not an instinctive skill for human beings. It’s not etched into our genes the way speech is. We have to teach our minds how to translate the symbolic characters we see into the language we understand. And the media or other technologies we use in learning and practicing the craft of reading play an important part in shaping the neural circuits inside our brains. Experiments demonstrate that readers of ideograms, such as the Chinese, develop a mental circuitry for reading that is very different from the circuitry found in those of us whose written language employs an alphabet. The variations extend across many regions of the brain, including those that govern such essential cognitive functions as memory and the interpretation of visual and auditory stimuli. We can expect as well that the circuits woven by our use of the Net will be different from those woven by our reading of books and other printed works.

Sometime in 1882, Friedrich Nietzsche bought a typewriter—a Malling-Hansen Writing Ball, to be precise. His vision was failing, and keeping his eyes focused on a page had become exhausting and painful, often bringing on crushing headaches. He had been forced to curtail his writing, and he feared that he would soon have to give it up. The typewriter rescued him, at least for a time. Once he had mastered touch-typing, he was able to write with his eyes closed, using only the tips of his fingers. Words could once again flow from his mind to the page.

But the machine had a subtler effect on his work. One of Nietzsche’s friends, a composer, noticed a change in the style of his writing. His already terse prose had become even tighter, more telegraphic. “Perhaps you will through this instrument even take to a new idiom,” the friend wrote in a letter, noting that, in his own work, his “‘thoughts’ in music and language often depend on the quality of pen and paper.”

Also see:

Living With a Computer

(July 1982)
"The process works this way. When I sit down to write a letter or start the first draft of an article, I simply type on the keyboard and the words appear on the screen..." By James Fallows

“You are right,” Nietzsche replied, “our writing equipment takes part in the forming of our thoughts.” Under the sway of the machine, writes the German media scholar Friedrich A. Kittler, Nietzsche’s prose “changed from arguments to aphorisms, from thoughts to puns, from rhetoric to telegram style.”

The human brain is almost infinitely malleable. People used to think that our mental meshwork, the dense connections formed among the 100 billion or so neurons inside our skulls, was largely fixed by the time we reached adulthood. But brain researchers have discovered that that’s not the case. James Olds, a professor of neuroscience who directs the Krasnow Institute for Advanced Study at George Mason University, says that even the adult mind “is very plastic.” Nerve cells routinely break old connections and form new ones. “The brain,” according to Olds, “has the ability to reprogram itself on the fly, altering the way it functions.”

As we use what the sociologist Daniel Bell has called our “intellectual technologies”—the tools that extend our mental rather than our physical capacities—we inevitably begin to take on the qualities of those technologies. The mechanical clock, which came into common use in the 14th century, provides a compelling example. In Technics and Civilization, the historian and cultural critic Lewis Mumford described how the clock “disassociated time from human events and helped create the belief in an independent world of mathematically measurable sequences.” The “abstract framework of divided time” became “the point of reference for both action and thought.”

The clock’s methodical ticking helped bring into being the scientific mind and the scientific man. But it also took something away. As the late MIT computer scientist Joseph Weizenbaum observed in his 1976 book, Computer Power and Human Reason: From Judgment to Calculation, the conception of the world that emerged from the widespread use of timekeeping instruments “remains an impoverished version of the older one, for it rests on a rejection of those direct experiences that formed the basis for, and indeed constituted, the old reality.” In deciding when to eat, to work, to sleep, to rise, we stopped listening to our senses and started obeying the clock.

The process of adapting to new intellectual technologies is reflected in the changing metaphors we use to explain ourselves to ourselves. When the mechanical clock arrived, people began thinking of their brains as operating “like clockwork.” Today, in the age of software, we have come to think of them as operating “like computers.” But the changes, neuroscience tells us, go much deeper than metaphor. Thanks to our brain’s plasticity, the adaptation occurs also at a biological level.

The Internet promises to have particularly far-reaching effects on cognition. In a paper published in 1936, the British mathematician Alan Turing proved that a digital computer, which at the time existed only as a theoretical machine, could be programmed to perform the function of any other information-processing device. And that’s what we’re seeing today. The Internet, an immeasurably powerful computing system, is subsuming most of our other intellectual technologies. It’s becoming our map and our clock, our printing press and our typewriter, our calculator and our telephone, and our radio and TV.

When the Net absorbs a medium, that medium is re-created in the Net’s image. It injects the medium’s content with hyperlinks, blinking ads, and other digital gewgaws, and it surrounds the content with the content of all the other media it has absorbed. A new e-mail message, for instance, may announce its arrival as we’re glancing over the latest headlines at a newspaper’s site. The result is to scatter our attention and diffuse our concentration.

The Net’s influence doesn’t end at the edges of a computer screen, either. As people’s minds become attuned to the crazy quilt of Internet media, traditional media have to adapt to the audience’s new expectations. Television programs add text crawls and pop-up ads, and magazines and newspapers shorten their articles, introduce capsule summaries, and crowd their pages with easy-to-browse info-snippets. When, in March of this year, TheNew York Times decided to devote the second and third pages of every edition to article abstracts, its design director, Tom Bodkin, explained that the “shortcuts” would give harried readers a quick “taste” of the day’s news, sparing them the “less efficient” method of actually turning the pages and reading the articles. Old media have little choice but to play by the new-media rules.

Never has a communications system played so many roles in our lives—or exerted such broad influence over our thoughts—as the Internet does today. Yet, for all that’s been written about the Net, there’s been little consideration of how, exactly, it’s reprogramming us. The Net’s intellectual ethic remains obscure.

About the same time that Nietzsche started using his typewriter, an earnest young man named Frederick Winslow Taylor carried a stopwatch into the Midvale Steel plant in Philadelphia and began a historic series of experiments aimed at improving the efficiency of the plant’s machinists. With the approval of Midvale’s owners, he recruited a group of factory hands, set them to work on various metalworking machines, and recorded and timed their every movement as well as the operations of the machines. By breaking down every job into a sequence of small, discrete steps and then testing different ways of performing each one, Taylor created a set of precise instructions—an “algorithm,” we might say today—for how each worker should work. Midvale’s employees grumbled about the strict new regime, claiming that it turned them into little more than automatons, but the factory’s productivity soared.

More than a hundred years after the invention of the steam engine, the Industrial Revolution had at last found its philosophy and its philosopher. Taylor’s tight industrial choreography—his “system,” as he liked to call it—was embraced by manufacturers throughout the country and, in time, around the world. Seeking maximum speed, maximum efficiency, and maximum output, factory owners used time-and-motion studies to organize their work and configure the jobs of their workers. The goal, as Taylor defined it in his celebrated 1911 treatise, The Principles of Scientific Management, was to identify and adopt, for every job, the “one best method” of work and thereby to effect “the gradual substitution of science for rule of thumb throughout the mechanic arts.” Once his system was applied to all acts of manual labor, Taylor assured his followers, it would bring about a restructuring not only of industry but of society, creating a utopia of perfect efficiency. “In the past the man has been first,” he declared; “in the future the system must be first.”

Taylor’s system is still very much with us; it remains the ethic of industrial manufacturing. And now, thanks to the growing power that computer engineers and software coders wield over our intellectual lives, Taylor’s ethic is beginning to govern the realm of the mind as well. The Internet is a machine designed for the efficient and automated collection, transmission, and manipulation of information, and its legions of programmers are intent on finding the “one best method”—the perfect algorithm—to carry out every mental movement of what we’ve come to describe as “knowledge work.”

Google’s headquarters, in Mountain View, California—the Googleplex—is the Internet’s high church, and the religion practiced inside its walls is Taylorism. Google, says its chief executive, Eric Schmidt, is “a company that’s founded around the science of measurement,” and it is striving to “systematize everything” it does. Drawing on the terabytes of behavioral data it collects through its search engine and other sites, it carries out thousands of experiments a day, according to the Harvard Business Review, and it uses the results to refine the algorithms that increasingly control how people find information and extract meaning from it. What Taylor did for the work of the hand, Google is doing for the work of the mind.

The company has declared that its mission is “to organize the world’s information and make it universally accessible and useful.” It seeks to develop “the perfect search engine,” which it defines as something that “understands exactly what you mean and gives you back exactly what you want.” In Google’s view, information is a kind of commodity, a utilitarian resource that can be mined and processed with industrial efficiency. The more pieces of information we can “access” and the faster we can extract their gist, the more productive we become as thinkers.

Where does it end? Sergey Brin and Larry Page, the gifted young men who founded Google while pursuing doctoral degrees in computer science at Stanford, speak frequently of their desire to turn their search engine into an artificial intelligence, a HAL-like machine that might be connected directly to our brains. “The ultimate search engine is something as smart as people—or smarter,” Page said in a speech a few years back. “For us, working on search is a way to work on artificial intelligence.” In a 2004 interview with Newsweek, Brin said, “Certainly if you had all the world’s information directly attached to your brain, or an artificial brain that was smarter than your brain, you’d be better off.” Last year, Page told a convention of scientists that Google is “really trying to build artificial intelligence and to do it on a large scale.”

Such an ambition is a natural one, even an admirable one, for a pair of math whizzes with vast quantities of cash at their disposal and a small army of computer scientists in their employ. A fundamentally scientific enterprise, Google is motivated by a desire to use technology, in Eric Schmidt’s words, “to solve problems that have never been solved before,” and artificial intelligence is the hardest problem out there. Why wouldn’t Brin and Page want to be the ones to crack it?

Still, their easy assumption that we’d all “be better off” if our brains were supplemented, or even replaced, by an artificial intelligence is unsettling. It suggests a belief that intelligence is the output of a mechanical process, a series of discrete steps that can be isolated, measured, and optimized. In Google’s world, the world we enter when we go online, there’s little place for the fuzziness of contemplation. Ambiguity is not an opening for insight but a bug to be fixed. The human brain is just an outdated computer that needs a faster processor and a bigger hard drive.

The idea that our minds should operate as high-speed data-processing machines is not only built into the workings of the Internet, it is the network’s reigning business model as well. The faster we surf across the Web—the more links we click and pages we view—the more opportunities Google and other companies gain to collect information about us and to feed us advertisements. Most of the proprietors of the commercial Internet have a financial stake in collecting the crumbs of data we leave behind as we flit from link to link—the more crumbs, the better. The last thing these companies want is to encourage leisurely reading or slow, concentrated thought. It’s in their economic interest to drive us to distraction.

Maybe I’m just a worrywart. Just as there’s a tendency to glorify technological progress, there’s a countertendency to expect the worst of every new tool or machine. In Plato’s Phaedrus, Socrates bemoaned the development of writing. He feared that, as people came to rely on the written word as a substitute for the knowledge they used to carry inside their heads, they would, in the words of one of the dialogue’s characters, “cease to exercise their memory and become forgetful.” And because they would be able to “receive a quantity of information without proper instruction,” they would “be thought very knowledgeable when they are for the most part quite ignorant.” They would be “filled with the conceit of wisdom instead of real wisdom.” Socrates wasn’t wrong—the new technology did often have the effects he feared—but he was shortsighted. He couldn’t foresee the many ways that writing and reading would serve to spread information, spur fresh ideas, and expand human knowledge (if not wisdom).

The arrival of Gutenberg’s printing press, in the 15th century, set off another round of teeth gnashing. The Italian humanist Hieronimo Squarciafico worried that the easy availability of books would lead to intellectual laziness, making men “less studious” and weakening their minds. Others argued that cheaply printed books and broadsheets would undermine religious authority, demean the work of scholars and scribes, and spread sedition and debauchery. As New York University professor Clay Shirky notes, “Most of the arguments made against the printing press were correct, even prescient.” But, again, the doomsayers were unable to imagine the myriad blessings that the printed word would deliver.

So, yes, you should be skeptical of my skepticism. Perhaps those who dismiss critics of the Internet as Luddites or nostalgists will be proved correct, and from our hyperactive, data-stoked minds will spring a golden age of intellectual discovery and universal wisdom. Then again, the Net isn’t the alphabet, and although it may replace the printing press, it produces something altogether different. The kind of deep reading that a sequence of printed pages promotes is valuable not just for the knowledge we acquire from the author’s words but for the intellectual vibrations those words set off within our own minds. In the quiet spaces opened up by the sustained, undistracted reading of a book, or by any other act of contemplation, for that matter, we make our own associations, draw our own inferences and analogies, foster our own ideas. Deep reading, as Maryanne Wolf argues, is indistinguishable from deep thinking.

If we lose those quiet spaces, or fill them up with “content,” we will sacrifice something important not only in our selves but in our culture. In a recent essay, the playwright Richard Foreman eloquently described what’s at stake:

I come from a tradition of Western culture, in which the ideal (my ideal) was the complex, dense and “cathedral-like” structure of the highly educated and articulate personality—a man or woman who carried inside themselves a personally constructed and unique version of the entire heritage of the West. [But now] I see within us all (myself included) the replacement of complex inner density with a new kind of self—evolving under the pressure of information overload and the technology of the “instantly available.”

As we are drained of our “inner repertory of dense cultural inheritance,” Foreman concluded, we risk turning into “‘pancake people’—spread wide and thin as we connect with that vast network of information accessed by the mere touch of a button.”

I’m haunted by that scene in 2001. What makes it so poignant, and so weird, is the computer’s emotional response to the disassembly of its mind: its despair as one circuit after another goes dark, its childlike pleading with the astronaut—“I can feel it. I can feel it. I’m afraid”—and its final reversion to what can only be called a state of innocence. HAL’s outpouring of feeling contrasts with the emotionlessness that characterizes the human figures in the film, who go about their business with an almost robotic efficiency. Their thoughts and actions feel scripted, as if they’re following the steps of an algorithm. In the world of 2001, people have become so machinelike that the most human character turns out to be a machine. That’s the essence of Kubrick’s dark prophecy: as we come to rely on computers to mediate our understanding of the world, it is our own intelligence that flattens into artificial intelligence.

Nicholas Carr’s most recent book, The Big Switch: Rewiring the World, From Edison to Google, was published earlier this year.

Friday, July 11, 2008


So You Think You Can Dance?:

PET Scans Reveal Your Brain's Inner Choreography Recent brain-imaging studies reveal some of the complex neural choreography behind our ability to dance
By Steven Brown and Lawrence M. Parsons

So natural is our capacity for rhythm that most of us take it for granted: when we hear music, we tap our feet to the beat or rock and sway, often unaware that we are even moving. But this instinct is, for all intents and purposes, an evolutionary novelty among humans. Nothing comparable occurs in other mammals nor probably elsewhere in the animal kingdom. Our talent for unconscious entrainment lies at the core of dance, a confluence of movement, rhythm and gestural representation. By far the most synchronized group practice, dance demands a type of interpersonal coordination in space and time that is almost nonexistent in other social contexts.

Even though dance is a fundamental form of human expression, neuroscientists have given it relatively little consideration. Recently, however, researchers have conducted the first brain-imaging studies of both amateur and professional dancers. These investigations address such questions as, How do dancers navigate though space? How do they pace their steps? How do people learn complex series of patterned movements? The results offer an intriguing glimpse into the complicated mental coordination required to execute even the most basic dance steps.

I Got Rhythm
Neuroscientists have long studied isolated movements such as ankle rotations or finger tapping. From this work we know the basics of how the brain orchestrates simple actions. To hop on one foot—never mind patting your head at the same time—requires calculations relating to spatial awareness, balance, intention and timing, among other things, in the brain’s sensorimotor system. In a simplified version of the story, a region called the posterior parietal cortex (toward the back of the brain) translates visual information into motor commands, sending signals forward to motion-planning areas in the premotor cortex and supplementary motor area. These instructions then project to the primary motor cortex, which generates neural impulses that travel to the spinal cord and on to the muscles to make them contract.

At the same time, sensory organs in the muscles provide feedback to the brain, giving the body’s exact orientation in space via nerves that pass through the spinal cord to the cerebral cortex. Subcortical circuits in the cerebellum at the back of the brain and in the basal ganglia at the brain’s core also help to update motor commands based on sensory feedback and to refine our actual motions. What has remained unclear is whether these same neural mechanisms scale up to enable maneuvers as graceful as, say, a pirouette.

To explore that question, we conducted the first neuroimaging study of dance movement, in conjunction with our colleague Michael J. Martinez of the University of Texas Health Science Center at San Antonio, using amateur tango dancers as subjects. We scanned the brains of five men and five women using positron-emission tomography, which records changes in cerebral blood flow following changes in brain activity; researchers interpret increased blood flow in a specific region as a sign of greater activity among neurons there. Our subjects lay flat inside the scanner, with their heads immobilized, but they were able to move their legs and glide their feet along an inclined surface. First, we asked them to execute a box step, derived from the basic salida step of the Argentine tango, pacing their movements to the beat of instrumental tango songs, which they heard through headphones. We then scanned our dancers while they flexed their leg muscles in time to the music without actually moving their legs. By subtracting the brain activity elicited by this plain flexing from that recorded while they “danced,” we were able to home in on brain areas vital to directing the legs through space and generating specific movement patterns.

As anticipated, this comparison eliminated many of the basic motor areas of the brain. What remained, though, was a part of the parietal lobe, which contributes to spatial perception and orientation in both humans and other mammals. In dance, spatial cognition is primarily kinesthetic: you sense the positioning of your torso and limbs at all times, even with your eyes shut, thanks to the muscles’ sensory organs. These organs index the rotation of each joint and the tension in each muscle and relay that information to the brain, which generates an articulated body representation in response. Specifically, we saw activation in the precuneus, a parietal lobe region very close to where the kinesthetic representation of the legs resides. We believe that the precuneus contains a kinesthetic map that permits an awareness of body positioning in space while people navigate through their surroundings. Whether you are waltzing or simply walking a straight line, the precuneus helps to plot your path and does so from a body-centered or “egocentric” perspective.

Next we compared our dance scans to those taken while our subjects performed tango steps in the absence of music. By eliminating brain regions that the two tasks activated in common, we hoped to reveal areas critical for the synchronization of movement to music. Again this subtraction removed virtually all the brain’s motor areas. The principal difference occurred in a part of the cerebellum that receives input from the spinal cord. Although both conditions engaged this area—the anterior vermis—dance steps synchronized to music generated significantly more blood flow there than self-paced dancing did.

Albeit preliminary, our result lends credence to the hypothesis that this part of the cerebellum serves as a kind of conductor monitoring information across various brain regions to assist in orchestrating actions [see “Rethinking the Lesser Brain,” by James M. Bower and Lawrence M. Parsons; Scientific American, August 2003]. The cerebellum as a whole meets criteria for a good neural metronome: it receives a broad array of sensory inputs from the auditory, visual and somatosensory cortical systems (a capability that is necessary to entrain movements to diverse stimuli, from sounds to sights to touches), and it contains sensorimotor representations for the entire body.

Unexpectedly, our second analysis also shed light on the natural tendency that humans have to tap their feet unconsciously to a musical beat. In comparing the synchronized scans with the self-paced ones, we found that a lower part of the auditory pathway, a subcortical structure called the medial geniculate nucleus (MGN), lit up only during the former set. At first we assumed that this result merely reflected the presence of an auditory stimulus—namely, music—in the synchronized condition, but another set of control scans ruled out this interpretation: when our subjects listened to music but did not move their legs, we detected no blood flow change in the MGN.

Thus, we concluded that MGN activity related specifically to synchronization and not simply listening. This finding led us to postulate a “low road” hypothesis that unconscious entrainment occurs when a neural auditory message projects directly to the auditory and timing circuits in the cerebellum, bypassing high-level auditory areas in the cerebral cortex.

So You Think You Can Dance?
Other parts of the brain engage when we watch and learn dance movements. Beatriz Calvo-Merino and Patrick Haggard of University College London and their colleagues investigated whether specific brain areas become active preferentially when people view dances they have mastered. That is, are there brain areas that switch on when ballet dancers watch ballet but not, say, capoeira (an Afro-Brazilian martial art stylized as a dance and performed to music)?

To find out, the team took functional magnetic resonance imaging scans of ballet dancers, capoeira dancers and nondancers as they viewed three-second, silent video clips of either ballet or capoeira movements. The researchers found that expertise had a major influence on the premotor cortex: activity there increased only when subjects viewed dances that they themselves could execute. Other work offers a likely explanation. Investigators have found that when people watch simple actions, areas in the premotor cortex involved in performing those actions switch on, suggesting that we mentally rehearse what we see—a practice that might help us learn and understand new movements. Researchers are examining how widely humans rely on such imitation circuits.

In follow-up work, Calvo-Merino and her colleagues compared the brains of male and female ballet dancers as they watched video clips of either male or female dancers performing gender-specific steps. Again, the highest activity levels in the premotor cortex corresponded to men viewing the male-only moves and to women viewing the female-only moves.

The ability to rehearse a movement in your mind is indeed vital to learning motor skills. In 2006 Emily S. Cross, Scott T. Grafton and their colleagues at Dartmouth College considered whether imitation circuits in the brain increase their activity as learning takes place. Over the course of several weeks, the team took weekly functional MRI scans of dancers as they learned a complex modern dance sequence. During the scans, subjects viewed five-second clips that exhibited either the movements they were mastering or other, unrelated steps. After each clip, the subjects rated how well they thought they could execute the movements they saw. The results affirmed those of Calvo-Merino and her colleagues. Activity in the premotor cortex increased during training and was indeed correlated to the subjects’ assessments of their ability to perform a viewed dance segment.

Both investigations highlight the fact that learning a complex motor sequence activates, in addition to a direct motor system for the control of muscle contractions, a motor-planning system that contains information about the body’s ability to accomplish a specific movement. The more expert people become at some motor pattern, the better they can imagine how that pattern feels and the more effortless it probably becomes to carry out.

As our research shows, however, the ability to simulate a dance sequence—or tennis serve or golf swing—in the mind is not simply visual, as these studies might suggest; it is kinesthetic as well. Indeed, true mastery requires a muscle sense, a motor image, as it were, in the brain’s motion-planning areas of the movement in question.

Shake, Rattle and (Social) Role
Perhaps the most fascinating question for neuroscientists to explore is why people dance in the first place. Certainly music and dance are closely related; in many instances, dance generates sound. Aztec danzantes in Mexico City wear leggings containing seeds from the ayoyotl tree, called chachayotes, which make a sound with every step. In many other cultures, people put noise-making objects—from taps to castanets to beads—on their bodies or clothes while they dance. In addition, dancers frequently clap, snap and stomp. As a result, we have postulated a “body percussion” hypothesis that dance evolved initially as a sounding phenomenon and that dance and music, especially percussion, evolved together as complementary ways of generating rhythm. The first percussion instruments may well have been components of dancing regalia, not unlike Aztec chachayotes.

Unlike music, however, dance has a strong capacity for representation and imitation, which suggests that dance may have further served as an early form of language. Indeed, dance is the quintessential gesture language. It is interesting to note that during all the movement tasks in our study, we saw activation in a region of the right hemisphere corresponding to what is known as Broca’s area in the left hemisphere. Broca’s area is a part of the frontal lobe classically associated with speech production. In the past decade research has revealed that Broca’s area also contains a representation of the hands.

This finding bolsters the so-called gestural theory of language evolution, whose proponents argue that language evolved initially as a gesture system before becoming vocal. Our study is among the first to show that leg movement activates the right-hemisphere homologue to Broca’s area, which offers more support for the idea that dance began as a form of representational communication.

What role might the homologue to Broca’s area have in enabling a person to dance? The answer does not appear to involve speech directly. In a 2003 study Marco Iacoboni of the University of California, Los Angeles, and his colleagues applied magnetic brain stimulation to disrupt function in either Broca’s area or its homologue. In both cases, their subjects were then less able to imitate finger movements using their right hand. Iacoboni’s group concluded that these areas are essential for imitation, a key ingredient in learning from others and in spreading culture. We have another hypothesis as well. Although our study did not involve imitative movements per se, dancing the tango and copying finger actions both demand that the brain correctly order series of interdependent movements. Just as Broca’s area helps us to correctly string together words and phrases, its homologue may serve to place units of movement into seamless sequences.

We hope that future neuroimaging studies will provide fresh insight into the brain mechanisms behind dance and its evolution, which is highly intertwined with the emergences of both language and music. We view dance as a marriage of the representational capacity of language and the rhythmicity of music. This interaction allows people not only to tell stories using their bodies but to do so while synchronizing their movements with others’ in a way that fosters social cohesion.

To view this article in its original context:
http://www.sciam.com/article.cfm?id=the-neuroscience-of-dance&print=true

Friday, June 27, 2008

Fishing in the Stream of Consciousness

Fishing in the stream of consciousness, researchers now can detect our intentions and predict our choices before we are aware of them ourselves. The brain, they have found, appears to make up its mind 10 seconds before we become conscious of a decision -- an eternity at the speed of thought.

Their findings challenge conventional notions of choice.

[Image]
Corbis

"We think our decisions are conscious," said neuroscientist John-Dylan Haynes at the Bernstein Center for Computational Neuroscience in Berlin, who is pioneering this research. "But these data show that consciousness is just the tip of the iceberg. This doesn't rule out free will, but it does make it implausible."

Through a series of intriguing experiments, scientists in Germany, Norway and the U.S. have analyzed the distinctive cerebral activity that foreshadows our choices. They have tracked telltale waves of change through the cells that orchestrate our memory, language, reason and self-awareness.

In ways we are only beginning to understand, the synapses and neurons in the human nervous system work in concert to perceive the world around them, to learn from their perceptions, to remember important experiences, to plan ahead, and to decide and act on incomplete information. In a rudimentary way, they predetermine our choices.

To probe what happens in the brain during the moments before people sense they've reached a decision, Dr. Haynes and his colleagues devised a deceptively simple experiment, reported in April in Nature Neuroscience. They monitored the swift neural currents coursing through the brains of student volunteers as they decided, at their own pace and at random, whether to push a button with their left or right hands.

In all, they tested seven men and seven women from 21 to 30 years old. They recorded neural changes associated with thoughts using a functional magnetic resonance imaging machine and analyzed the results with an experimental pattern-recognition computer program.

While inside the brain scanner, the students watched random letters stream across a screen. Whenever they felt the urge, they pressed a button with their right hand or a button with their left hand. Then they marked down the letter that had been on the screen in the instant they had decided to press the button.

Studying the brain behavior leading up to the moment of conscious decision, the researchers identified signals that let them know when the students had decided to move 10 seconds or so before the students knew it themselves. About 70% of the time, the researchers could also predict which button the students would push.

"It's quite eerie," said Dr. Haynes.

Other researchers have pursued the act of decision deeper into the subcurrents of the brain.

In experiments with laboratory animals reported this spring, Caltech neuroscientist Richard Anderson and his colleagues explored how the effort to plan a movement forces cells throughout the brain to work together, organizing a choice below the threshold of awareness. Tuning in on the electrical dialogue between working neurons, they pinpointed the cells of what they called a "free choice" brain circuit that in milliseconds synchronized scattered synapses to settle on a course of action.

"It suggests we are looking at this actual decision being made," Dr. Anderson said. "It is pretty fast."

And when those networks momentarily malfunction, people do make mistakes. Working independently, psychologist Tom Eichele at Norway's University of Bergen monitored brain activity in people performing routine tasks and discovered neural static -- waves of disruptive signals -- preceded an error by up to 30 seconds. "Thirty seconds is a long time," Dr. Eichele said.

Such experiments suggest that our best reasons for some choices we make are understood only by our cells. The findings lend credence to researchers who argue that many important decisions may be best made by going with our gut -- not by thinking about them too much.

Dutch researchers led by psychologist Ap Dijksterhuis at the University of Amsterdam recently found that people struggling to make relatively complicated consumer choices -- which car to buy, apartment to rent or vacation to take -- appeared to make sounder decisions when they were distracted and unable to focus consciously on the problem.

Moreover, the more factors to be considered in a decision, the more likely the unconscious brain handled it all better, they reported in the peer-reviewed journal Science in 2006. "The idea that conscious deliberation before making a decision is always good is simply one of those illusions consciousness creates for us," Dr. Dijksterhuis said.

Does this make our self-awareness just a second thought?

All this work to deconstruct the mental machinery of choice may be the best evidence of conscious free will. By measuring the brain's physical processes, the mind seeks to know itself through its reflection in the mirror of science.

"We are trying to understand who we are," said Antonio Damasio, director of the Brain and Creativity Institute at the University of Southern California, "by studying the organ that allows you to understand who you are."


To see this article in its original context:
http://online.wsj.com/article/SB121450609076407973.html?mod=yhoofront

MIND READING




Books

Is your freedom of choice an illusion?
Your brain knows what you're going to do 10 seconds before you are aware of it, neuroscientist John-Dylan Haynes and his colleagues reported recently in Nature Neuroscience.
Last year In the journal Current Biology, the scientists reported they could use brain wave patterns to identify your intentions before you revealed them.
Their work builds on a landmark 1983 paper in the journal Brain by the late Benjamin Libet and his colleagues at the University of California in San Francisco, who found out that the brain initiates free choices about a third of a second before we are aware of them.
Together, these findings support the importance of the unconscious in shaping decisions. Psychologist Ap Dijksterhuis and his co-workers at the University of Amsterdam reported in the journal Science that it is not always best to deliberate too much before making a choice.
Nobel laureate Francis Crick -- co-discoverer of the structure of DNA -- tackled the implications of such cognitive science in his 1993 book The Astonishing Hypothesis: The Scientific Search for the Soul.
With co-author Giulio Tononi, Nobel laureate Gerald Edleman explores his biology-based theory of consciousness in A Universe Of Consciousness: How Matter Becomes Imagination.

Thursday, June 26, 2008


ATLANTA, Georgia (AP) -- The elderly fear breaking a hip when they fall, but a government study indicates that hitting their head can also have deadly consequences: Brain injuries account for half of all deaths from falls.

The study by the Centers for Disease Control and Prevention is the first comprehensive national look at the role brain injuries play in fatal elderly falls. It examined 16,000 deaths in 2005 that listed unintentional falls as an underlying cause of death.

CDC researchers found that slightly more than half of the deaths were attributed to brain injuries. The other deaths were due to a variety of causes including heart failure, strokes, infections and existing chronic conditions worsened by a broken hip or other injuries sustained in a fall.

"A lot of people don't think a fall is serious unless they broke a bone, they don't think it's serious unless they break a hip. They don't worry about their head," said Pat Flemming, a senior physical therapist and researcher at Vanderbilt University

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Each year, one in three Americans age 65 and older fall. About 30 percent of such falls require medical treatment.

Previous CDC research showed that the U.S. death rate from falling has risen dramatically -- about 55 percent -- for the elderly since the 1990s. The new study highlights the role that brain injuries play in such deaths.

As people age, veins and arteries can be more easily torn during a sudden blow or jolt to the head, said Marlena Wald, a CDC epidemiologist who co-authored the study.

That can cause a fatal brain bleed. Other factors can contribute, such as the use of blood-thinners, said Judy Stevens, another CDC researcher and co-author.

The severity of brain injuries isn't always immediately apparent, and some people may not lose consciousness. Wald noted a scenario seen in hospitals in which an elderly fall victim comes in alert and talking, but dies an hour or two later.

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The study also found that deaths and hospitalization rates for fall-related brain injuries increased with age. Brain injuries accounted for about 8 percent of hospital stays for non-fatal falls.

There are several steps older Americans can take to try to prevent falls. Exercise can increase leg strength and balance. Glasses or other vision correction measures can help people avoid obstacles. And being careful with the use of drugs that can affect thinking and coordination -- such as tranquilizers and sleeping pills -- can also make a difference.

"Falls are not an inevitable consequence of aging. These head injuries are not inevitable, either," Wald said.

The research is being published in the June issue of a scientific publication, the Journal of Safety Research.

To view this article in its original context:

http://www.cnn.com/2008/HEALTH/06/24/elderly.falls.ap/index.html


What Foods Trigger Headaches and Migraines?


Some of the most common foods, beverages, and additives associated with headaches include:

* Aged cheese and other tyramine-containing foods: Tyramine is a substance found naturally in some foods. It is formed from the breakdown of protein as foods age. Generally, the longer a high-protein food ages, the greater the tyramine content. The amount of tyramine in cheeses differs greatly due to the variations in processing, fermenting, aging, degradation, or even bacterial contamination. For people who take monoamine oxidase (MAO) inhibitor medications to treat their headaches, it is especially important to avoid all foods containing tyramine, including aged cheeses, red wine, alcoholic beverages, and some processed meats, as these foods can trigger severe hypertension.
* Alcohol: Blood flow to your brain increases when you drink alcohol. Some scientists blame the headache on impurities in alcohol or by-products produced as your body metabolizes alcohol. Red wine, beer, whiskey, and champagne are the most commonly identified headache triggers.
* Food additives: Food preservatives (or additives) contained in certain foods can trigger headaches. The additives, nitrates and nitrites, dilate blood vessels, causing headaches in some people.

Cold foods: Cold foods can cause headaches in some people. It's more likely to occur if you are over-heated from exercise or hot temperatures. Pain, which is felt in the forehead, peaks 25 to 60 seconds and lasts from several seconds to one or two minutes. More than 90% of migraine sufferers report sensitivity to ice cream and cold substances.

Migraine Relief?


Can Migraines be Controlled?

— Kelsie Kenefick

Can migraines be controlled? In most cases, YES! The pain of migraines is so horrible that, to many, it seems almost impossible to believe that they are controllable. How could something so painful be controlled simply by bringing the nervous system back into balance... back to “homeostasis”?

To understand how it is possible to control your headaches, let me explain a bit about the physiology of migraine headaches and muscle tension headaches. In working with hundreds of sufferers over the years, I have found that all migraineurs have high muscle tension and, therefore, both issues must be addressed. Migraines have often been called “vascular” headaches. In other words, they have to do with the blood flow through the arteries. When the arteries over-dilate (open up too much), after having been constricted, the blood goes throbbing to the eyes and brain, causing these debilitating headaches. Muscle tension headaches, on the other hand, are caused by the muscles in the shoulders, neck, head, and face, tightening up, thereby causing the pain of these headaches.

Both types of headaches can be brought under control by controlling one's autonomic (or “automatic”) nervous system. This is the part of the nervous system that is usually not consciously controlled. For example, you do not usually consciously control your heart rate, but if you had a fast heart rate, or an irregular heart rate, I could teach you how to control that. I simply attach instruments to your body to measure certain body functions, and, with the feedback on the computer, I would coach you to control the readings. You are getting biological feedback, or “biofeedback” for short, on the screen.

Other things that normally are not consciously controlled include respiration, circulation, blood pressure, brain waves, muscle tension, digestion, sweat gland activity, and much more. Learning how to control the inner functionings of the body, and mind, is enormously empowering to people. People learn how to create health and well-being in their bodies, and these are skills they use, and benefit from, for the rest of their lives. It is so much fun to do!

You have likely heard of the “fight or flight” response. This is when the body goes into high gear after confronted with a real, or perceived, threat or danger. The body has this mechanism to protect itself. All animals have this. Centuries ago our dangers were more physical. We had to protect ourselves from lions, bears and other tribes. Adrenaline would go into the blood stream and give us super strength. This is a great thing in times of emergencies. The problem, nowadays, is that most people run on adrenaline way too much. Stress has become a global epidemic. And, most of our stressors now are psychological stressors so the tension does not get released from the body by running or fleeing. It is often held in.

Back to migraines! There are two things that happen in the body during the fight or flight response that contribute to migraines. First, all animals (including human animals) have an unconscious instinct to protect the throat when they perceive danger or stress. This is because animals are usually attacked at the throat. So, human animals tighten in the neck and shoulders first when they experience stress. This excess muscle tension can create muscle tension headaches and, additionally, contributes to the migraines by crimping the arteries.

Another thing that happens, to people who get migraines, is that their arteries constrict when they experience stress. The body unconsciously does this because if you were to be attacked, or cut, you would bleed less if the arteries were constricted. It is, again, the fight or flight response kicking in. Interestingly, the migraine does not occur when the person is under stress. It happens after the stress is over (usually). This is why the migraine may come on in the middle of the night, the first day of the weekend, or at the beginning of vacation. So, the muscle tension headaches occur when the person is under stress and the migraines occur when the person begins to relax.

People with migraines tend to have cold hands and feet. I teach them how to consciously warm their hands and feet; thereby opening, or dilating, their arteries. They need to keep their arteries dilated in order to prevent the migraines from occurring. I simply get a temperature reading on the surface of their skin. If their arteries are dilated I will see a reading of 93 degrees, or higher, on the surface. I train them how to keep their arteries dilated in order to prevent the migraines from occurring. Often when I start sessions with someone, their surface skin temperature will be in the low 80's. That is a lot of constriction!

Most of the people I work with are on a lot of medications when they first come. The triptans, such as Imitrex or Maxalt, cause the arteries to constrict. These medications are taken as the migraine is coming on to slow it down. Sometimes people crave caffeine when they feel a migraine coming on, for the same reason. The problem, then, is that rebound headaches can occur. In other words, the medications will constrict the arteries, giving temporary relief, but then when the arteries open up as the medication wears off, another migraine often occurs. Then the headaches get worse and worse as time goes on. Sometimes people get to the point where they have chronic daily headaches from medication overuse. The best thing is to learn how to control your nervous system as soon as possible so you don't get into this trap. Think of the medications as being a temporary solution while you take control.

When working with migraine sufferers, I first teach them some general skills for bringing their nervous system into balance (such as proper breathing, deep relaxation of the body and mind, imagery). The Wild Divine is, of course, a wonderful way for patients to practice general relaxation skills at home. Then, I teach them to bring certain muscles to “normal tension”. Every muscle has a normal level of tension that it should be at and it is measured in microvolts. I teach my patients how to bring their shoulder, neck, forehead, and sometimes the jaw muscles, to normal tension. Then, I teach them how to use their mind to help eliminate stress from their nervous system. Since every thought creates both a chemical change in the body and an electrical change in the nervous system, working with the mind is critical. Finally, I end the training with teaching my patients to dilate their arteries.

There are several ways in which migraine sufferers can start learning how to balance their nervous systems. You could see a biofeedback therapist, such as myself, who deals with these issues, Or, you can start learning meditation, imagery, or breathing techniques to calm the body-mind at home.