Category Archives: Neuroscience

Brain freedom

An interesting L.A. Times article explores the state of the brain of freestyle rappers!

In an unlikely pairing, two professional rappers have teamed up with researchers from the National Institutes of Health to study what happens in the brain during freestyle rapping. The results, published Thursday in the journal Scientific Reports, suggest that the process is similar to that of other spontaneous creative acts, including jazz improvisation.

The study was initiated by the Los Angeles-based rappers Daniel Rizik-Baer and Michael Eagle and carried out by Allen Braun and Siyuan Liu of the NIH’s National Institute on Deafness and Other Communication Disorders. The researchers asked 12 rappers to memorize a set of lyrics that they then rapped while inside of a magnetic resonance imaging machine. The rappers also were asked to freestyle over music while in the MRI scanner. Then the researchers compared the images from the memorized and improvised rapping sessions to see whether the brain activity underlying the two tasks was different.

An indeed it was. Freestyle rapping seems to involve much less executive function from the brain (yes, I know, the jokes write themselves.) This corresponds with something I read in the book, “The User Illusion” which argued that a lot of actions that require on the spot decision making — sports, improvised comedy, music improvisation — seem to require silencing our “thinking” voice and letting a more subconscious persona take over. And, in fact, being too conscious disrupts your “flow.”

Speaking of freestyle rap, here’s a good example from albino rapper Brother Ali.

The religious experience

My latest read is a double biography of the fathers of psychoanalysis, Sigmund Freud and Carl Jung. (It’s titled, rather creatively, “Freud & Jung.”) Currently, I’m in the Freud section. Freud was known to be an atheist and rather dismissive of religion (hence my warm feelings for him.) Freud even wrote an entire book dismissing religion called “The Future of an Illusion.” When he sent a copy to religious friend, the friend reproached him for not understanding the true source of contentment found in religion. Freud reported…

This, he [the religious friend] says, consists in a particular feeling, which he himself is never without, which he finds confirmed by many others, in which he may suppose is present in millions of people. It is a feeling which he would like to call a sensation of ‘eternity’, a feeling of something limitless, unbounded — as it were, ‘oceanic’.

Of course, keen eyed readers of this blog have seen this feeling described before. In one blog post I described the book “My Stroke of Insight” in which…

…the author describes feelings of spiritual transcendence after suffering a serious left brain stroke. She describes feeling liquid, connected to the universe, and at some points incapable of delineating where her physical self ends and the rest of her environment begins.

The specificity of terms is interesting here. Freud’s friend described feeling “oceanic”, while this book’s author describes feeling “liquid.”

I also once mentioned a Los Angeles Times article on the use of LSD to treat various ailments. The article reported…

Delany said her “trip” awakened a deep and reassuring sense of “knowing.” She came to see the universe and everything in it as interconnected. As the music in her headphones reached a crescendo, she held her breath and realized it would OK — no, really easy — not to breathe anymore. She sensed there was nothing more she needed to know and therefore nothing she needed to fear about dying.

Can this sensation be explained in neurological terms? Again, quoting my post on “My Stroke of Insight”…

Today, I find myself scanning through an old New Yorker article, “God on the Brain.” (September 17, 2001.) The piece discusses the brain scans of Tibetan Buddhists and Franciscan nuns taken “before and at the peak of their transcendent feelings.” It notes…

Beforehand, the scan’s computer portrays the brain’s activity as a palette of fierce reds in rich yellows. During meditation or prayer, however, a marked color change was noted in a small region of the left side of the cerebrum called the parietal superior parietal lobe, which is just behind the crown of the skull. The flaming reds have turned into deep azure, signaling a substantial decline in activity.

Sight unseen

You may have heard the anecdote that when European ships first appeared on the horizon of the New World, the natives could not see them. The argument is that these ships were so unlike anything they had ever seen, so uncategorizable by their brains, that they were rendered invisible. (I’ve heard similar accounts of Western ships appearing on African shores.) You probably thought, “what fools they must’ve been to not be able to see something. They were thoroughly deserving of their centuries of subjugation.”

I was just emptying the dishwasher. I finished, then looked in and noticed that I had not removed a butter tray. The butter tray seldom gets washed and as a result is usually not part of a dishwashing session. In this sense, when placed in the dishwasher, it become something of a foreign object. Was my brain responding to the sight of the dishwasher tray in the same way the brains of native Americans responded to those ships?

Here’s another example that everyone can relate to. I was missing a book. I went into my bedroom to look for it, but even before I entered the room, I was thinking “there’s no way it could be here.” It wasn’t. I searched the rest of the house, then gave the bedroom a second try. There was the book in plain sight, on my desk. Because I had no expectation of finding it there, it had become invisible. Or, it’s possible that the house is haunted by a poltergeist who jokingly removed the book from my view, then returned it to my desk. It seems quite likely that when the next houseguest appears, the poltergeist will use its supernatural abilities to increase the pressure on that person’s head, causing their head to explode and bits of their brain to fly out across the dinner table.

The cats of Jemaa el-Fnaa

Frequent readers doubtless recall that I was in Morocco just over a year ago. One of the cities we visited was Marakesh, which has an ancient but still bustling city center called Jemaa el-Fnaa. Jemaa el-Fnaa is a crazy place; a montage of tourists, shopkeepers, men handling snakes and monkeys, loud music and ever present buzzing mopeds that angrily honk it you if you’re in their way.

What I remember most of Jemaa el-Fnaa is the cats. The place is covered with essentially feral but tame felines who stroll about with a regal arch to their backs*. And here’s the kicker: in every other part of world, cats are quite anxious and flighty creatures. You drop your coffee cup, and the cat on your lap leaps up and runs through three rooms of your house to go hide under the bed. The cats in Jemaa el-Fnaa are quite mellow. A moped might loudly race past a snoozing feline and he’ll barely raise a whisker.

* My most treasured Jemaa el-Fnaa cat memory: I was walking down a back alley and saw a cat eagerly nibbling on a morsel of something. I looked closer and realized he was gnawing on a chicken head.

Say, wouldn’t it be nice if I could tie this observation about cute kitties into the neuroscience/physiology topics I’m always talking about? Well, indeed I can.

As I’ve mentioned, I’ve been reading Robert Sapolsky’s “Why Zebras Don’t Get Ulcers.” Fundamentally, what the book imparts is a description of the process by which the stress response of animals (including humans) operates. The stress response is basically what fires off when we sense danger or alarm; flight or fight, that sort of thing. So how does this work? You notice a potential danger — say, an approaching cannibal savage — and your body immediately releases adrenaline, making you sharper, stronger, more focused. But your body also releases chemical glucocorticoids which set you up to maintain the sharper, stronger more focused you down the line. Adrenaline is a immediate fix, glucocorticoids are more long-term (the effects can last hours, even days.) In essence, evolution gleaned that when one becomes aware of danger, one should stay prepared for quite a while.

Now, I think over recent times I’ve become fairly aware of what all this feels like. I mentioned how I recently heard some noise in the night and even though I intellectually understood it to be nonthreatening, I still got a minor jolt of adrenaline. And as I go throughout the day, I have a definite sense of how even a subtle but slightly anxious thought can give me a very mild sense of “the tinglies” which I intuit to be either adrenaline or glucocorticoid related. On the flipside, I’m aware how just visualizing a pleasant scene (say, playing with a puppy, or smothering an annoying baby) calms the system down. (Deep breathing is also quite effective.)

So how does this relate to the cats of Jemaa el-Fnaa? One has to wonder about their nervous system. As I’ve mentioned, regular cats scamper away at the slightest sound. Why don’t the cats of Jemaa el-Fnaa? I think what is frightening to regular cats — loud noises, buzzing mopeds etc. — has become unremarkable to these cats. And their nervous system has learned to respond accordingly.

The unanticipated benefits of stretching?

I’m continuing my reading of the Sapolsky book and just went through a section which makes clear how energy intensive thinking is for the brain. When you’re at your sharpest — mildly stressed but focused — blood is trucking oxygen into your noodle. It’s because you need this oxygen, you’re burning the stuff up. This explains why after a day of intensive learning or studying you feel physically tired. Your brain has been using all your energy.

Now, to jump topics: a few minutes ago, I was doing some stretching. Stretching is, of course, well prescribed for any physical activity, as well as also recommended in dealing with repetitive strain issues. Of course, I stretched heavily for maybe the first three or four years of my repetitive strain, and, frankly, best as I can tell, it did absolutely nothing. This isn’t quite a surprise. There are some who argue that at least warm up stretching (which is essentially what repetitive strain stretching is) really has little value. Evolution did not design creatures who needed to bend down and do a hamstring stretch before they ran away from an approaching tiger. Our muscles should be able to leap into action on command (within reason.) (Cool down stretching is, I believe, still recommended.)

Having said that, there’s no denying there’s a certain pleasure in stretching. You get to really feel your body. I’m considering this possibility: by stretching, you place your focus on your muscles and away from your “thoughts.” As a result, your brain is burning less fuel (because you’re not really thinking in that focused manner.) Additionally, thoughts are often really worries or anxieties but you can’t really worry when stretching (because you’re focused on the stretch.) Stretching is kind of a “break” for the mind. So my thinking here is that the benefits of stretching are not those that are conventionally understood — making the muscles more malleable or whatever — but are benefits appreciated by your brain. A chance to shut down and chill for a while.

Use your 40 bits wisely

As should be obvious, I’m currently reading yet another book on the mind and its relation to pain/healing. This one is called “Healing and the Mind” by Bill Moyers. (It’s based on a PBS series he did of the same name.)

Mindfulness comes up a lot in this book. Mindfulness is essentially a meditative practice of paying attention to the moment – of really tasting tastes, hearing sounds, seeing colors etc. And practiced mindfulness seems to have a pretty good track record of calming the mind and mitigating pain.

So what’s going on here? How can simply paying attention decrease something as nagging and annoying as pain. In thinking about this, I’m reminded of a theory I’ve mentioned before: the 40 bit limit. What’s that? This site has a good review.

…researchers now believe that each second, the human body gathers and processes well over a million bits of information.  (A bit is a basic unit of binary, yes/no, storable information.) Yet studies have demonstrated that human consciousness can process only between 10 and 40 bits per second.  This means that an enormous amount of sorting, analysis, and prioritization has occurred subconsciously before some minute portion of sensory data becomes available to our momentary consciousness. 

In essence, you have a limited amount of bits that you can focus on things. My thinking is that when practicing mindfulness you are allocating your bits towards core sensations and away from interior chatter and pain. (On a related note: When I was really struggling with arm pain I would often notice that it would go away during meals. It probably wasn’t really going away but rather I was focusing my attention on the delicious tastes generated by my vast culinary skills.)

Everyone is a drug dealer

Human beings like to get excited. They like to feel their heart speed up, their energy levels increase and all the other crap that goes with being excited. And, of course, humans like sexual excitement.

But what is excitement from a physiological viewpoint? I don’t know all the ins and outs of it, but it involves hormones being released in the body and neurotransmitters in the brain. These chemicals set off body process which result in increased energy and sharper, focused thinking. These chemicals provide what the kids call “a rush.”

When in life do we get excited? Obviously there are occasionally situations when excitement is definitely warranted. When you get attacked by a bear, when you get fired by your screaming boss, when a bus runs over your dog. However, those situations are rare. But there are many other times we get excited. When we watch a movie and the character we identify with finds himself in danger. When we hear music which evokes great drama. When we watch a political TV show and the announcer screams about how the other guys are winning. When we watch a sports TV show and the announcer screams about how the other team is winning. When we watch porn.

So what is happening in those situations? Again, chemicals are being released in the body and brain that set off processes that may not always be exactly pleasurable, but are a rush.

What do street drugs (and cigarettes, alcohol, coffee etc) do when ingested? They mimic these same chemicals and therefore set off the same processes in the body. These drugs work the same pathways of the body as TV, movies, music. (We can throw in video games, books etc.)

Therefore, we can conclude that TV, books, games, music etc. are no better than drugs. If you use them, you are no better than a heroin junkie in Times Square begging old men to pay him for oral sex so he can have his arm candy. And the makers of those products are no better than the lowest drug dealer who forces addiction on his friends while prostituting his mother for filthy lucre. Everything you’ve ever been told is a lie! BLACK IS WHITE. GOOD IS BAD. PUPPIES ARE KITTENS!!!!!

The history of stuff

I’ve reported several times here about my reading of the book “My Stroke of Insight” by a neuroscientist who had a stroke and was able to provide a thorough description of the experience. Her stroke knocked out a significant part of her left brain, and she reported a feeling of losing her sense of physical self — of literally being unclear where her body ended and the rest of the world began.

I’ve also commented on a particular New Yorker article that reported on the brain scans of people in meditation or prayer. What was noted is that a portion of the left brain’s parietal lobe — known to be integral to our ability to locate ourselves in physical space — became quiet.

So, it looks like this particular chunk of the brain is integral to our physical definition of ourselves, and when this chunk is “quieted” people seem to fall into this sense of “I’m a part of the universe” feeling.

Of course, the statement “I’m a part of the universe” is the kind of thing hippies are always saying thus it should be mocked and distrusted. My sense is that there’s no real spiritual event happening, but simply that one’s “sense of self” (by this I mean sense of physical self) is a sense like proprioception (our general sense of where parts of our bodies are) or our sense of whether we’re upside down or not (vestibular function.) When this sense is removed, all sorts of funny things happen.

Now, Jill Bolte Taylor, the author of “My Stroke of Insight” would probably disagree. I seem to recall that in her book that she did ascribe to her experience a certain kind of spirituality. In a “sense”, she felt that this sense of “everything is connected” was not merely a neurological tic, but a real, valid experience.

I don’t fully buy this, but I was considering the following this morning. When we look around the world, we see things as separate objects. “This is a book, this is a dog, this is a ham sandwich etc.” But we recognize these objects can have parts removed and still fall under the same classification. For example, I can tear some pages out of a book and it’s still a book. I can surgically remove a dog’s tail and it’s still a dog. Objects are made up of lesser parts. And of course the same is true with the human body. I am one person, but that one person is made up of lungs, heart, skin, bones etc. And those parts break down into cells, and cells can be broken down into molecules, molecules into atoms, and atoms can be broken apart into various quantum particles like protons and neutrons etc. And in between these various units is empty space. (The space between these small units is invisible to our eyes, of course.)

Now we know that these various units can affect each other. On an organ level, the brain can release hormones that travel through the bloodstream to the heart and cause the heart to beat faster. Inside the cell body, different cell structures interact with each other. The same with molecules, atoms, quarks and so on. The “stuff” of the world is constantly interacting with “other stuff.”

Okay, so we realize that objects can be reduced to a much smaller units and these units interact with each other. We also see a lot of interaction in the larger plane of existence most of us operate in. A dog barks at cat, and the cat runs away. I throw a rock at a glass jar and it breaks apart. I tell my girlfriend she’s a whore and this starts a series of physiological changes including increased heartbeat and tears rolling out of her eyes. (And possible slapping.) Again, we’re dealing with “stuff” interacting with “other stuff.”

However, we, as humans, recognize certain forms of stuff as “objects” but not others. I understand a Swiss watch is made up of a number of mechanical parts interacting. And I view that watch as a machine. However, if I throw a rock at a jar, or insult my girlfriend, you could argue I am also part of a machine — a thing made up of “parts” (of which I am one part). To call one thing a “watch” but not call another thing something like “guyinsultinggirlfriend” seems like a rather arbitrary distinction. If anything, the rule is that we recognize objects made up of units that are close together, but we don’t recognize objects that are made up of units with a lot of space between them. (I can think of various exceptions to that second part: we recognize that cities are made up of people, buildings, cars etc. The same point could be made about planets, or galaxies etc.)

There’s another factor here relevant to how we view human beings (and probably most intelligent lifeforms.) We recognize the concept of ego. I happen to associate the collection of cells and organs that make up myself as being connected to my desires, drive, will and what not. Because those units all serve under my ego (well, sort of) I group them together. But what is ego? You could argue it’s both a psychological construct and a physiological construct (e.g. that part of the brain that was lost during Taylor’s stroke.) But it’s hard to argue that it’s “real” in any meaningful sense. Thus, if our sense of what qualifies as an object is based upon either a rather unimportant distinction of how far apart things are from other things or whether the object possesses the ethereal ego, then our distinctions really aren’t all that meaningful. And, thus, we are all connected. Just as parts of the Swiss watch interact with each other, I can interact with a dog who barks at a cat who claws a scientist who accidentally releases a biological weapon that kills all life on earth. It’s merely stuff interacting with other stuff.

I am the new God of the universe!

Fear of success?

Many years ago, when I was in Seattle, I took a class at the community college on public speaking. In this class there was an older guy, kind of white trashy, who seemed almost functionally retarded. He would constantly interrupt the teacher with totally asinine comments which she responded to with either mild amusement or annoyance.

One day, during a class exercise, this guy gave a speech on what he did for a living. He explained that he would go to government auctions and buy vehicles that had been impounded by the police, repair them, and then resell them for a hefty profit. I don’t think this made him exactly wealthy, but he was certainly doing all right, which was all the more impressive due to the fact that he was a complete moron.

Now, recently I was talking to a guy I know about a business venture he is engaged in, and he was reporting quite a bit of success. I don’t consider this guy to be a moron, but he’s not Einstein either. He’s a person of average intelligence. So I was driving home last night and thinking, “You know, I’m always going on about what a genius I am (not to mention incredibly good-looking and possessing vast physical prowess) but I’m largely unsuccessful. Why don’t I try one of these relatively simple business ventures?” The answer arrived pretty quick. I have considered such ideas in the past, and I almost invariably overthink and outthink myself. I consider a scheme — at one point I was thinking of starting a business doing consulting for speech recognition software — and then I sit around thinking about all the things that could go wrong, and essentially talk myself out of it. My vast intelligence — my ability to analyze problems and concepts to an almost granular level (you could say I’m doing it right now) — is actually a detriment. I’m the opposite of the moron from my public speaking course who probably thought, “Hey, I could buy used cars and resell them,” and then just went out and did it.

Okay, so hold on to that thought. Recently I’ve started reading a new book from the general ouvre of books related to Dr. John Sarno’s theories of the psychosomatic causes of pain. This book is called “The Great Pain Deception,” and from what I can tell it’s self published by the author. He does have a nice chapter length overview on Freud’s theories (id, ego and superego etc.) and at one point discusses how people inhibit their own success.

Some people unconsciously set themselves up to repeatedly fail… This can be accomplished through repetitive obsessive behavior or more commonly to a lesser extent, by procrastination. Things such as cleaning and re-cleaning, thinking and rethinking, or doing and re-doing or checking and re-checking, or practicing and re-practicing are avoidance-flight mechanisms.

Now, I read that point about “thinking and rethinking” and thought, “This is exactly what I do and exactly what I was thinking about while driving home last night.”

Do I have a problem with procrastination as well? Hmm, maybe, I don’t know…

Well, I think I’ll get around to finishing this blog post later…

But, seriously: of course I have a problem with procrastination. (As well as general time management.)

Why would I and others tend to outthink ourselves from pursuing ideas that might succeed? The conventional response would be we have some kind of fear of failure — we don’t want to waste time and resources on something that won’t pan out. This book argues the opposite — it posits that procrastination/overthinking is a fear of trying and succeeding. But why fear success? The answer comes easily if you’re familiar with Freud. Freud argued that we have an id — an inner child full of insatiable wants and desires — and a superego, which is essentially the voice of society. These two modular components are always clashing. The id wants success. But the superego does not, because it knows success will offend and engender jealousy in those around us. The superego wants to be “one of the people.”

This struck me as quite interesting, and I actually ran through a short mental list of people I know who have been successful versus people who have not, and I have to say, the people who have been successful clearly are not particularly bothered by the wants of the superego, or larger society. And the inverse is true with the unsuccessful.

So, am I constrained by my superego? Overall, I would say I have become less and less so as the years have gone by, particularly the last three or four. But I would surely say that in my childhood and even 20s I was bound by my superego. Or more correctly, there was a definite clash between my rebellious id and my parental superego. (A guy too concerned with fitting in probably wouldn’t start a blog called “My So-Called Penis.”)

The main thought here is that the id wants glory and is not ashamed about it. To add some ammunition to this point, consider children. Children are thought to be largely id-based creatures, and experienced no shame in taking glory in the most miniscule of accomplishments (such as successfully stacking colored blocks on top of each other.) Toddlers are largely unaware of the needs of others, and thus have to be trained, often violently so, to respect those around them. (To throw some neuroscience in here: generally speaking, the superego part of the mind is presumed to exist in the frontal cortex of the brain, and this brain area doesn’t really “activate” until many years after birth. We can also recall the famous case of Phineas Gage, a responsible, dutiful worker (e.g. dominated by superego) who, after having chunks of his frontal cortex removed in an accident, became a childish brute (e.g. dominated by id).)

Of course, there’s an additional component to this. I’m not sure “success” (which I’m generally defining as wealth, status and nailing a lot of babes) equals “happiness.” When I run down that mental list of successful people I mentioned above, I’m not sure I would describe all of them as happy. (Some I would though.)

I’ll end with an interesting quote mentioned in the book, from new agey author Marianne Williamson.

Our deepest fear is not that we are inadequate, our deepest fear is that we are powerful beyond measure… we ask ourselves, who am I to be this brilliant, gorgeous, talented and fabulous? But actually, who are you not to be?… Your playing small doesn’t serve the world.

Expect the expected

During my trip overseas I spent some time reading an interesting book called “The Head Trip.” It’s another book in the string of neuroscience/consciousness books I’ve been perusing. The author, Jeff Warren, spends a lot of time discussing the role of expectation in our interactions with ourselves and our environment. When the more interesting observations related to this is the success of placebo medical treatments. As is probably obvious, these are situations where doctors give people suffering from some particular malady a harmless pill and say, “you should start to feel better in X weeks.” A surprising number of people, greater than chance, do improve. And the reverse is also too. (To some degree, stories of people affected by the voodoo curses can probably be explained by their expectation that the voodoo curse was going to take its effect on them.)

Expectation can operate on other levels. While writing the book, Warren tried hypnosis and similar consciousness altering experiences. He found when the hypnotist seemed unsure of their abilities and incapable of inspiring confidence, he would not enter the hypnotic state. But when hypnotized by a seeming “professional” he more easily fell into a trance. His expectations of the process seemed to affect the outcome.

This makes me recall an experience I had years ago. I walked into a bar (surprise!) and started up a conversation with some people playing shuffleboard. They invited me to play a few games and I totally ruled! I was making shots that were blowing people away. However, I’ve played the game since then, and never achieved what I did in that first game. This is the kind of thing people often refer to as beginners luck.

So what role does expectation play in this? When I played that first game of shuffleboard, I had no sense of what I was capable of. I simply did my best and played the game. But, as years went on, I watched other people play, and analyzed what they did, and the world of shuffleboard became more familiar to me. As a result, I developed expectations about what was possible and what wasn’t.

Alternately, this leads us to consider the possibility that we’re capable of far more than we think, and it’s the expectations placed on us by ourselves and others that limit us. Ultimately, I think anything is possible… with love.