Male and Female Brains Really Are Different

by Rachel Baker on December 3, 2013

A new study released today shows that, in fact, the male and female brain are built differently.

By analyzing the MRIs of 949 people aged 8 to 22, scientists at the University of Pennsylvania found that male brains have more connections within each hemisphere, while female brains are more interconnected between hemispheres.

…But the study, released today in the Proceedings of the National Academy of Sciences, is interesting because it is one of the first to discover differences in the brain’s structural connectivity in a large sample size of people from a variety of age groups.

By analyzing the subjects’ MRIs using diffusion imaging, the scientists explored the brains’ fiber pathways, the bundles of axons that act as highways routing information from one part of the mind to the other. After grouping the image by sex and inspecting the differences between the two aggregate “male” and “female” pictures, the researchers found that in men, fiber pathways run back and forth within each hemisphere, while in women they tend to zig-zag between the left, or “logical,” and right, or “creative,” sides of the brain.

http://www.theatlantic.com/health/archive/2013/12/male-and-female-brains-really-are-built-differently/281962/

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