This colorful brain image is like a map of mental speed. The bright spaghetti structures represent the pathways connecting different brain cells. David Shattuck/Arthur Toga/Paul Thompson/UCLAFrom NPR:
The smarter the person, the faster information zips around the brain, a UCLA study finds. And this ability to think quickly apparently is inherited.
The study, published in the Journal of Neuroscience, looked at the brains and intelligence of 92 people. All the participants took standard IQ tests. Then the researchers studied their brains using a technique called diffusion tensor imaging, or DTI.
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