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kottke.org posts about 'neuroscience'

Elite archers are sometimes afflicted with something called target panic.

Target panic, as the condition is known, causes crack shots to suddenly lose control of their bows and their composure. Mysteriously, sufferers start releasing the bow the instant they see the target, sabotaging any chance of a gold-medal shot. Others freeze up and cannot release at all. Target panic is akin to the yips in baseball and golf, when accomplished athletes can no longer make a simple throw to first base or stroke an easy putt.

Some researchers have asserted that there are two types of yips, neurological (when groups of neurons become worn from overuse) and psychological.

Itching and perception

I try not to miss any of Atul Gawande's New Yorker articles, but his piece on itching from this week's issue is possibly the most interesting thing I've read in the magazine in a long time. He begins by focusing on a specific patient for whom compulsive itching has become a very serious problem. (Warning, this quote is pretty disturbing...but don't let it deter you from reading the article.)

...the itching was so torturous, and the area so numb, that her scratching began to go through the skin. At a later office visit, her doctor found a silver-dollar-size patch of scalp where skin had been replaced by scab. M. tried bandaging her head, wearing caps to bed. But her fingernails would always find a way to her flesh, especially while she slept.

One morning, after she was awakened by her bedside alarm, she sat up and, she recalled, "this fluid came down my face, this greenish liquid." She pressed a square of gauze to her head and went to see her doctor again. M. showed the doctor the fluid on the dressing. The doctor looked closely at the wound. She shined a light on it and in M.'s eyes. Then she walked out of the room and called an ambulance. Only in the Emergency Department at Massachusetts General Hospital, after the doctors started swarming, and one told her she needed surgery now, did M. learn what had happened. She had scratched through her skull during the night -- and all the way into her brain.

From there, Gawande pulls out to tell us about itching/scratching (the two are inseparable), then about a recent theory of how our brains perceive the world ("visual perception is more than ninety per cent memory and less than ten per cent sensory nerve signals"), and finally about a fascinating therapy initially developed for those who experience phantom limb pain called mirror treatment.

Among them is an experiment that Ramachandran performed with volunteers who had phantom pain in an amputated arm. They put their surviving arm through a hole in the side of a box with a mirror inside, so that, peering through the open top, they would see their arm and its mirror image, as if they had two arms. Ramachandran then asked them to move both their intact arm and, in their mind, their phantom arm-to pretend that they were conducting an orchestra, say. The patients had the sense that they had two arms again. Even though they knew it was an illusion, it provided immediate relief. People who for years had been unable to unclench their phantom fist suddenly felt their hand open; phantom arms in painfully contorted positions could relax. With daily use of the mirror box over weeks, patients sensed their phantom limbs actually shrink into their stumps and, in several instances, completely vanish. Researchers at Walter Reed Army Medical Center recently published the results of a randomized trial of mirror therapy for soldiers with phantom-limb pain, showing dramatic success.

Crazy! Gawande documents and speculates about other applications of this treatment, including using virtual reality representations instead of mirrors and utilizing multiple mirrors for treatment of M.'s itchy scalp. Anyway, read the whole thing...highly recommended.

Rampant speculation from Jonah Lehrer on why people care so much when they watch overpaid athletes play sports. It is, perhaps, all about mirror neurons:

"The main functional characteristic of mirror neurons is that they become active both when the monkey makes a particular action (for example, when grasping an object or holding it) and when it observes another individual making a similar action." In other words, these peculiar cells mirror, on our inside, the outside world; they enable us to internalize the actions of another. They collapse the distinction between seeing and doing.

This suggests that when I watch Kobe glide to the basket for a dunk, a few deluded cells in my premotor cortex are convinced that I, myself, am touching the rim. And when he hits a three pointer, my mirror neurons light up as I've just made the crucial shot. They are what bind me to the game, breaking down that 4th wall separating fan from player. I'm not upset because my team lost: I'm upset because it literally feels like I lost, as if I had been on the court.

For scientist Dr. Anne Adams (and composer Maurice Ravel), a rare disease called frontotemporal dementia caused a burst of creativity.

The disease apparently altered circuits in their brains, changing the connections between the front and back parts and resulting in a torrent of creativity. "We used to think dementias hit the brain diffusely," Dr. Miller said. "Nothing was anatomically specific. That is wrong. We now realize that when specific, dominant circuits are injured or disintegrate, they may release or disinhibit activity in other areas. In other words, if one part of the brain is compromised, another part can remodel and become stronger."

Some of Adams' work can be seen here...her portrait of pi contains a touch of synesthesia. (thx, cory)

This talk by neuroanatomist Jill Bolte Taylor was universally considered the best talk at the TED conference last month. In it, she describes the lessons she learned from studying her stroke from inside her own head as it was happening.

And in that moment my right arm went totally paralyzed by my side. And I realized, "Oh my gosh! I'm having a stroke! I'm having a stroke!" And the next thing my brain says to me is, "Wow! This is so cool. This is so cool. How many brain scientists have the opportunity to study their own brain from the inside out?"

Proust Was a Neuroscientist

Proust Was a Neuroscientist is the story of how eight writers and artists anticipated our contemporary understanding of the human brain. From the preface:

This book is about artists who anticipated the discoveries of neuroscience. It is about writers and painters and composers who discovered truths about the human mind -- real, tangible truths -- that science is only now rediscovering. Their imaginations foretold the facts of the future.

I enjoyed the book quite a bit so I sent the author, Jonah Lehrer, a few questions via email. Here's our brief conversation.

Jason Kottke: Your exploration of the intersection of neuroscience and culture begins with Proust; you were reading Swann's Way while doing research in a neuroscience lab. Where did the idea come from for a collection of people who anticipated our modern understanding of the human brain? How did you find those other stories?

Jonah Lehrer: The lab I was working in was studying the chemistry of memory. The manual labor of science can get pretty tedious, and so I started reading Proust while waiting for my experiments to finish. After a few hundred pages of melodrama, I began to realize that the novelist had these very modern ideas about how our memory worked. His fiction, in other words, anticipated the very facts I was trying to uncover by studying the isolated neurons of sea slugs. Once I had this idea about looking at art through the prism of science, I began to see connections everywhere. I'd mutter about the visual cortex while looking at a Cezanne painting, or think about the somatosensory areas while reading Whitman on the "body electric". Needless to say, my labmates mocked me mercilessly.

I'm always a little embarrassed to admit just how idiosyncratic my selection process was for the other artists in the book. I simply began with my favorite artists and tried to see what they had to say about the mind. The first thing that surprised me was just how much they had to say. Virginia Woolf, for instance, is always going on and on about her brain. "Nerves" has to be one of her favorite words.

Kottke: Which of your characters did you know the least about beforehand? Even a seeming polymath like yourself must have a blind spot or two.

Lehrer: Definitely Gertrude Stein. I actually found her through William James, the great American psychologist and philosopher. She worked in his Harvard lab, published a few scientific papers on "automatic writing," and then went to med-school at Johns Hopkins before dropping out and moving to Paris to hang out with Picasso. So I knew she had this deep background in science, but I had only read snippets of her work. I then proceeded to fall asleep to the same page of "The Making of Americans" for a month.

Kottke: Are there other characters that you considered for inclusion? If so, why weren't they included?

Lehrer: Lots of people were left on the cutting room floor. I had a long digression on Edgar Allen Poe and mirror neurons. (See, for instance, "The Purloined Letter," where Poe has detective Dupin reveal his secret for reading the minds of criminals: "When I wish to find out how wise, or how stupid, or how good, or how wicked is any one, or what are his thoughts at the moment, I fashion the expression of my face, as accurately as possible, in accordance with the expression of his, and then wait to see what thoughts or sentiments arise in my mind or heart, as if to match or correspond with the expression.") I also had a chapter on Coleridge and the unconscious, but I think that chapter was really just me wanting to write about opium. But, for the most part, I can't really say why some chapters survived the editing process and others didn't. I certainly mean no disrespect to Poe. If they let me write a sequel, I'll find a way to include him.

Kottke: I noticed that three out of the eight main characters in the book are women. Surveying the usually cited big thinkers of the 19th and 20th centuries, it would have been easy to write this book with all male characters. Is there an implicit statement in there that science would be better off with a greater percentage of women participating?

Lehrer: While I certainly agree with the idea that the institution of science would benefit from more female scientists, I didn't choose these female artists for that reason. I don't think you need any ulterior motive to fall in love with the work of Virginia Woolf and George Eliot. Their art speaks for itself. That said, I think the psychological insights of women like Woolf were rooted, at least in part, in their womanhood. Woolf, for instance, rebelled against the stodgy old male novelists of her day. Their fiction, she complained, was all about "factories and utopias". Woolf wanted to invert this hierarchy, so that the "task of the novelist" was to "examine an ordinary mind on an ordinary day." There's something very domestic about her modernism, so that the grandest epiphanies happen while someone is out buying flowers or eating a beef stew. Women might not be able to write novels about war or politics, but they could find an equal majesty by exploring the mind.

Plus, I think Woolf learned a lot about the brain from her mental illness. As a woman, she was subjected to all sorts of terrible psychiatric treatments, which made her rather skeptical of doctors. (In Mrs. Dalloway, she refers to the paternalistic Dr. Bradshaw as an "obscurely evil" person, whose insistence that the mental illness was "physical, purely physical" causes a suicide.) Introspection was Woolf's only medicine. "I feel my brains, like a pear, to see if it's ripe," she once wrote. "It will be exquisite by September."

Kottke: Are there other books/media out there that share a third culture kinship with yours? I received a copy of Lawrence Weschler's Everything That Rises: A Book of Convergences for Christmas...that seems to fit. Steven Johnson's books. Anything else you can recommend?

Lehrer: I've stolen ideas from so many people it's hard to know where to begin. Certainly Weschler and Johnson have both been major influences. I've always worshipped Oliver Sacks; Richard Powers has more neuroscience in his novels than most issues of Nature; I just saw Olafur Eliasson's new show at SFMOMA and that was rather inspiring. I could go on and on. It's really an exciting time to be interested in the intersection of art and science.

But I'd also recommend traveling back in time a little bit, before our two cultures were so divided. We don't think of people like George Eliot as third-culture figures, but she famously described her novels as a "a set of experiments in life." Virginia Woolf, before she wrote Mrs. Dalloway, said that in her new novel the "psychology should be done very realistically." Whitman worked in Civil War hospitals and corresponded for years with the neurologist who discovered phantom limb syndrome. (He also kept up with phrenology, the brain science of his day.) Or look at Coleridge. When the poet was asked why he attended so many lectures on chemistry, he gave a great answer: "To improve my stock of metaphors". In other words, trying to merge art and science isn't some newfangled idea.

--

Thanks, Jonah. You can read more of Lehrer's writing at his frequently updated blog, The Frontal Cortex.

A recent study shows that the human brain reacts differently to people that seem like us than to those who don't.

The experimenters used functional magnetic resonance imaging (fMRI) to scan the brains of Harvard and other Boston-area students while showing them pictures of other college-age people whom the researchers randomly described as either liberal northeastern students or conservative Midwest fundamentalist Christian students.

The study concludes that the secret to getting along with someone that you perceive as an outsider is to find some common ground so that your brain will accept them as someone with similar circumstances.

This is not new advice. Yet it is heartening to see that it is firmly grounded in distinct patterns of neural activity. There may be a brain basis for reacting with prejudices for those that seem different. But there's also a brain basis for overriding those differences and seeing outsiders as more like us.

David Galbraith expands upon what this means for society at large:

In other words, a civilized society depends not on the people who are currently the most civilized, but those who are most willing to accept change, as social or cultural groupings change, split or coalesce. Inevitably this means reasonable people rather than faithful people.

Forgetting May Be Part of the Process of Remembering. "A lightning memory, in short, is not so much a matter of capacity as it is of ruthless pruning." I pointed to some similar studies in my better living through self-deception post from a couple of weeks ago.

Better living through self deception

Interesting article about how people tell their stories and think of their past experiences and how that influences their mood and general outlook on life.

At some level, talk therapy has always been an exercise in replaying and reinterpreting each person's unique life story. Yet Mr. Adler found that in fact those former patients who scored highest on measures of well-being -- who had recovered, by standard measures -- told very similar tales about their experiences.

They described their problem, whether depression or an eating disorder, as coming on suddenly, as if out of nowhere. They characterized their difficulty as if it were an outside enemy, often giving it a name (the black dog, the walk of shame). And eventually they conquered it.

"The story is one of victorious battle: 'I ended therapy because I could overcome this on my own,'" Mr. Adler said. Those in the study who scored lower on measures of psychological well-being were more likely to see their moods and behavior problems as a part of their own character, rather than as a villain to be defeated. To them, therapy was part of a continuing adaptation, not a decisive battle.

The article goes on to describe the benefits of thinking about past events in the third person rather than in the first person:

In a 2005 study reported in the journal Psychological Science, researchers at Columbia University measured how student participants reacted to a bad memory, whether an argument or failed exam, when it was recalled in the third person. They tested levels of conscious and unconscious hostility after the recollections, using both standard questionnaires and students' essays. The investigators found that the third-person scenes were significantly less upsetting, compared with bad memories recalled in the first person.

"What our experiment showed is that this shift in perspective, having this distance from yourself, allows you to relive the experience and focus on why you're feeling upset," instead of being immersed in it, said Ethan Kross, the study's lead author. The emotional content of the memory is still felt, he said, but its sting is blunted as the brain frames its meaning, as it builds the story.

But things like eating disorders and mental illness aren't external forces and thinking about a bad memory as if it happened to a third party is not the truth. The standard model of the happy, smart, successful human being is someone who knows more, works hard, and has found, or at least is heading toward, their own personal meaning of life. But often that's not the case. Self-deceit (or otherwise willfully forgetting seemingly pertinent information) seems to be important to human growth.

Consider the recent findings by a group at Harvard about the effects of mindset on physical fitness:

The researchers studied 84 female housekeepers from seven hotels. Women in 4 hotels were told that their regular work was enough exercise to meet the requirements for a healthy, active lifestyle, whereas the women in the other three hotels were told nothing. To determine if the placebo effect plays a role in the benefits of exercise, the researchers investigated whether subjects' mind-set (in this case, their perceived levels of exercise) could inhibit or enhance the health benefits of exercise independent of any actual exercise.

Four weeks later, the researchers returned to assess any changes in the women's health. They found that the women in the informed group had lost an average of 2 pounds, lowered their blood pressure by almost 10 percent, and were significantly healthier as measured by body-fat percentage, body mass index, and waist-to-hip ratio. These changes were significantly higher than those reported in the control group and were especially remarkable given the time period of only four weeks.

Just by thinking they were exercising, these women gained extra benefit from their usual routines. The idea of thinking about oneself reminded me of Allen Iverson's training routine, which utilizes a technique called psychocybernetics:

"Let me tell you about Allen's workouts," says Terry Royster, his bodyguard from 1997 until early 2002. "All the time I have been with him, I never seen him lift a weight or stand there and shoot jumper after jumper. Instead, we'll be on our way to the game and he'll be quiet as hell. Finally, he'll say, 'You know now I usually cross my man over and take it into the lane and pull up? Well, tonight I'm gonna cross him over and then take a step back and fade away. I'm gonna kill 'em with it all night long.' And damned if he didn't do just that. See, that's his workout, when he's just sitting there, thinking. That's him working on his game."

What Iverson is doing is tricking his conscious self into thinking that he's done something that he hasn't, that he's practiced a move or shot 100 perfect free throws in a row. I think, therefore I slam. (I wonder if Iverson pictures himself in the first or third person in his visualizations.)

Carol Dweck's research looks at the difference between thinking of talent or ability as innate as opposed to something that can be developed:

At the time, the suggested cure for learned helplessness was a long string of successes. Dweck posited that the difference between the helpless response and its opposite -- the determination to master new things and surmount challenges -- lay in people's beliefs about why they had failed. People who attributed their failures to lack of ability, Dweck thought, would become discouraged even in areas where they were capable. Those who thought they simply hadn't tried hard enough, on the other hand, would be fueled by setbacks.

For some people, the facade they've created for themselves can come crashing down suddenly, as with stage fright:

He describes the sense of acute self-consciousness and loss of confidence that followed as "stage dread," a sort of "paradigm shift." He says, "It's not 'Look at me - I'm flying.' It's 'Look at me - I might fall.' It would be like playing a game of chess where you're constantly regretting the moves you've already played rather than looking at the ones you're going to play." Fry could not mobilize his defenses; unable to shore himself up, he took himself away.

In a slightly different but still related vein, Gerd Gigerenzer's research indicates that ignoring information is how smart decisions are made:

In order to make good decisions in an uncertain world, one sometimes has to ignore information. The art is knowing what one doesn't have to know.

Research done by Edward Vogel at the University of Oregon shows the capacity of a person's visual working memory "depends on your ability to filter out irrelevant information":

"Until now, it's been assumed that people with high capacity visual working memory had greater storage but actually, it's about the bouncer - a neural mechanism that controls what information gets into awareness," Vogel said.

And data from another study indicates that perhaps one of the things that the brain does best is forgetting ("motivated (voluntary) forgetting", in the words of one researcher):

The findings suggest that despite the brain's astonishing ability to archive a lifetime of memories, one of its prime functions is, paradoxically, to forget. Our sensory organs continually deluge us with information, some of it unpleasant. We wouldn't get through the day -- or through life -- if we didn't repress much of it.

Perhaps the way to true personal acheivement and happiness is through lying to yourself instead of being honest, loafing instead of practicing, and purposely forgetting information. There are plenty of self-help books on the market...where are the self-hurt books?

The sex of my brain is neither male nor female...I'm right in the middle.

A contestant on Who Wants to Be a Millionaire? uses his knowledge of cognitive neuroscience to advance to the late stages of the game.

I know it's only 8am, but this is the best link of the day. Scott Adams, creator of Dilbert, lost his voice 18 months ago due to a strange condition called spasmodic dysphonia. He wasn't ever supposed to get it back, but he did what any good nerd would do: he figured out how to hack his brain to route around the problem and, voila, his voice returned. Awesome. (thx, eric)

Update: In November 2004, Adams also lost the ability to draw because of a condition called focal dystonia. As with his voice problems, he routed around the problem by learning to draw in a different way. (thx, martin)

Gamers show a "similar pattern of high performance in resisting irrelevant impulses" as bilingual people. "Maybe those kids who play video games and who are also bilingual will be the best of older adults at filtering out distractions." (via sjb)

The human brain may have undergone "substantial evolution" in the past 60,000 years.

Poetry takes more brain power to read than prose. "Subjects were found to read poems slowly, concentrating and re-reading individual lines more than they did with prose."

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