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Posts Tagged "visual cortex"

Observations

What’s a Voxel and What Can It Tell Us? A Primer on fMRI

fMRI working memory task

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 [...]

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Observations

Why so many artists have lazy eyes, and other things art can teach us about the brain

cave drawing brain art mind

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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