Sunday, March 13, 2011

The Cerebellum, Reading, and IQ

new research suggests that there is a relationship between high IQ and the cerebellum. I have already noted the connection between the cerebellum and irregular timing, suggesting that it may respond to prose rhythms.

Which raises an interesting question: could the mere fact of reading prose, any prose, increase general intelligence? Specific prose -- on economics, biology, or philosophy, for example -- of course informs one about such things, and thus increases topic-specific intelligence. Reading across the genres allows one to see patterns and make connections, of course, and thus might also raise general intelligence to a certain degree. But may it also be that reading prose about anything at all could raise one's intelligence by its interactions in the cerebellum? This seems a potentially fruitful avenue of scientific research. One can see if there is such a positive correlation. Also, one can research how the cerebellum reacts in response to reading prose.

Saturday, March 12, 2011

New View of How Humans Moved Away From Apes

The New York Times has an article expanding on an article I already linked to on the evolution of distinctively human social traits. In fact, the points made about the nature of tribal bands and their interconnections, varieties of kinship and nonkinship, F. A. Hayek's observations that different social orders would compete and the best emerge, and Matt Ridley's thesis in The Rational Optimist about trade seem intimiately connected. If so, my project here and at Austrian Economics and Literature are in fact intimately related. Certainly both are about applying the studies of evolutionary processes to understanding literature.

But this idea of interrelated human bands of typically unrelated people is suggestive. Surely we see these dynamics in life and, thus, in literature -- novels and epics being the most obvious places one would see such dynamics represented.

Friday, March 11, 2011

High Levels of Testosterone in utero, IQ, and Literature

Does high levels of testosterone in utero cause genius? I wouldn't doubt it. High levels of testosterone in utero also causes heritable left-handedness (approximately 50% of left-handers, the other 50% being caused by birth trauma), and we see an extremely high percentage of left-handers in the arts, math, and the sciences. This suggests that at the very least high levels of testosterone in utero may be a cause of a considerable number of incidences of high IQ.

This potentially helps explain why males tend to dominate in the arts, math, and sciences. I would not be surprised to find that an unusual number of women who do well in these fields are left-handed, or have higher than usual testosterone levels (or exhibit behaviors typical of those who experienced high levels of testosterone in utero).

If this is true for even a significant percentage of artists, what effect might this have on literature? Left-handers tend to turn to the left and notice things to their left more than to the right (vice versa for right handers). Do we see evidence of this in works of literature? How might one identify such things? I will note that the creator of The Simpsons is left handed, and a great many of the characters in the show are also left handed. There is even an entire episode on Ned Flanders opening a store for left handers, The Leftorium.

But there are likely to be other consequences. Does high levels of testosterone in utero affect cognition? Emotions? World view? Sexual behavior and sexuality (we know it does for these two)? If having had high levels of testosterone in utero affect these and any number of other aspects of cognition, we should expect to see it in works of literature produced by such people. How does this affect literary history? The effects of literature on culture?

Thursday, March 10, 2011

Anthropologists link human uniqueness to hunter-gatherer group structure

Some potentially interesting research for literary Darwinists on the origins of human uniqueness.

Two Types of Rhythms

The brain perceives two types of rhythms in two different brain locations.

The researchers found that a network comprising the basal ganglia was activated for the timing of regular sounds, whereas a network in the cerebellum was found to be activated for the timing of irregular sound sequences.
The basal ganglia are involved in such things as voluntary motor control, procedural learning relating to routine behaviors or habits, eye movements, and modulates cognitive and emotional functions. With the exception of the emotional functions, each of these are timing functions.

The cerebellum is involved in the coordination, precision, and accurate timing of motor control, with attention and language, and in regulating fear and pleasure. Again, with the exception of the emotional functions, each of these are timing functions.

The rhythms of rhythmic poetry and prose, it seems, invoke different parts of the brain. Interestingly, the part of the brain involved in language is that which is used for irregular sounds sequences. We speak in prose. Yet note some of the other things listed. The cerebellum is also involved in fear and pleasure regulation. We have horror novels, but where are the horror poems? The closest might be Poe's "The Raven," but then one does not feel so much horror when reading the poem as a certain creepiness, sadness, or haunting feeling. I will also note that much literary prose we read is in the form of novels -- a genre that requires our attention. These may not be unrelated, then.

But let us look at the relation between rhythmic verse and the functions of the basal ganglia. Regular rhythms are very much like routine behaviors -- the same rhythm, like a habit, recurs. The fact that cognitive and emotional functions are also modulated in the basal ganglia might also suggest that rhythmic poetry could contribute to the modulation of into our emotions and cogntiive abilities. Or at least influence it, for better or worse? Regular rhythms at the very least seem to be very persuasive -- both emotionally and cognitively. Might this be the very reason for that? Consider the fact, too, that rituals are a kind of "procedural learning relating to routine behaviors or habits," allowing for the perpetuation of cultural norms, including ethical beliefs. This suggests a close relationship between ritual and poetry beyond the mere use of poetry in rituals.

Of course, rarely are poems purely and perfectly rhythmic. There are variations in just how stressed or unstressed a syllable is. And some syllables can change based on its neighbors. This creates a level of irregularity on top of the regularity. Those poems which can accomplish this, then, are likely to tap into both parts of the brain simultaneously. Another way a poet might be able to accomplish this is to mix up the regularity of the rhythms in the lines. Many ancient Greek poems did this. where regular line rhythms are used, but a variety are mixed together. A poem with, say, the following rhythm:

U//U/U/U/
UU/UU/UU/
U/U/U/U/U/
U//U/
with each quatrain repeated might be able to do both simultaneously, since the brain is detecting both regularity and irregularity.

What other insights might we be able to gain from this? What uses might one be able to put this in regards to versification?

Three Layers of Memory

There are three layers of memory:

a core focusing on one active item, a surrounding area holding at least three more active items, and a wider region containing passive items that have been tagged for later retrieval or "put on the back burner."
What does this imply for reading? It is known that while we are focusing on one word, we are also peripherally aware of the words on either side. Is this part of the same process? And what about the elements that have been tagged? What sorts of things do our memories tag? How might that affect the structure of sentences, or word patterns?

An author of the original study also notes that

"Predictability can free up resources so a person can effectively multitask"
May this be one of the uses of rhythm and rhyme in poetry?

Wednesday, March 2, 2011

You Are What You Like

What do your aesthetic tastes say about you? If our personalities affect what we like to read, they certainly must affect what authors write. How might personality research affect understanding literature? Certainly our personality traits affect our ways of viewing the world. Do literary works reflect only a few personality types? What about those we've canonized? If so, what effect does that have on culture? On the further evolution of literature?