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  • Leonardo, for one, spent a fair amount of time dissecting human cadavers because he

  • wanted to know how the various bones related to one each other and how the muscles related

  • to the bones. So he wanted to have a realistic understanding of the human anatomy because

  • he was depicting real live people sitting, gesturing, walking, and he wanted to get this

  • as absolutely correct as possible. In order to understand how the body functions,

  • we need to know something about the anatomy of the body, it’s sort of obvious.The more

  • we want to depict the mind, the more it helps to understand the mind, and one way to understand

  • the mind is to understanding the brain. So it is conceivable that as we get deeper and

  • deeper insights into the mind, artists will get ideas about how combinations of stimuli

  • affect, for example, emotional states that will allow them to depict those emotional

  • states better. 

But in addition, were beginning to get in very, very primitive terms,

  • some insights into the nature of creativity. Hughling Jackson, the great neurologist in

  • the 19th century, thought that the left hemisphere is involved in language. We know this is true.

  • And the left hemisphere is primarily involved in logical processes, calculation, mathematics,

  • rational thinking. The right hemisphere, he thought, is more involved with musicality,

  • which is true. The sing-song in my language comes from the right hemisphere, the grammar

  • and the articulation comes from my left hemisphere. Okay? So he thought that the right hemisphere

  • is more involved in musicality in, you know, synthesis, putting things together and an

  • aspect of creativity. And he felt that the two hemispheres inhibit one another. So if

  • you have lesions of the left hemisphere, that removes the inhibitory constraint on the right

  • hemisphere and frees up certain processes. And he found that certain kids that develop

  • later in life, let’s say, later in their teens, aphasia, a language difficulty; it

  • freed up in them a musicality which they didn’t have before. 

People have returned to

  • that more recently in the analysis of a dementia called Frontotemporal Dementia. Frontotemporal

  • Dementia is a dementia somewhat similar to Alzheimer’s disease, it actually begins

  • earlier, that primarily affects the temporal lobe of the brain and the front lobe of the

  • brain. If it’s only expressed on the left side, people with Frontotemporal Dementia

  • begin to show creativity that theyve never shown before. So if you were painting before,

  • you might start, if you develop Frontotemporal Dementia on the left side, to use colors that

  • youve never used before to try forms that youve never used before. If you never painted

  • before, you might take up painting for the first time. So this is really quite unusual.


There are also a group of people who have studied aspects of creativity. I can

  • give you a problem that can be solved in one of two ways, systematically working your way

  • through it or putting it together, take a guess, an Aha Phenomenon. And they found that

  • when people do it in a sort of creative way, the Aha Phenomenon, there is a particular

  • area in the right side of the brain that lights up. And they show this not only with imaging,

  • but also with electrophysiological recording. 

So this is really quite interesting.

  • You have a number of sort of indirect, not the most compelling evidence in the world,

  • the Aha Phenomenon is well-documented, but it’s only a component of creativity. Number

  • of suggestions, there are aspects of the right hemisphere that might be involved in creativity.

  • But look, as we have been saying all along, we are at a very early stage in understanding

  • higher mental processes, so it’s amazing we know anything about creativity, but this

  • is certainlywe are heading into an era in which one can really get very, very good

  • insights into it and the kinds of situations that lead to increased creativity... you know,

  • is group think productive? Does it lead to greatgreater creativity or does it inhibit

  • individual creativity? Lots of these questions are being explored, both from a social psychological

  • and from a biological point of view.

Leonardo, for one, spent a fair amount of time dissecting human cadavers because he


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エリック・カンデル創造性、あなたの脳、そしてAha!瞬間 (Eric Kandel: Creativity, Your Brain, and the Aha! Moment)

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    Precious Annie Liao に公開 2021 年 01 月 14 日