What’s a Voxel and What Can It Tell Us? A Primer on fMRI
June 21st, 2012 |
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At right is a picture of someone’s brain as seen through functional magnetic resonance imaging or fMRI. This particular subject is taxing his neurons with a working memory task—those sunny orange specks represent brain activity related to the task. fMRI images show the brain according to changes in blood oxygen level, a proxy for degree [...]
Keep reading »Why so many artists have lazy eyes, and other things art can teach us about the brain
June 4th, 2010 |
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NEW YORK—When ancient denizens of central France painted leaping horses on the cave walls at Lascaux, they might not have had the late Renaissance understanding of how to illustrate perspective and three dimensions. But they did, with simple black lines, give the implication of depth, showing the far pair of limbs behind the closer pair. [...]
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