Brain shape crucial in determining thoughts and behavior, says study.

A study published in the journal Nature suggests that the shape of the brain may have a greater influence on how we think, feel, and behave than the connections and signals between neurons. The research team in Australia arrived at that conclusion after taking MRI scans of 255 people’s brains while the participants performed tasks. They created a computer model that simulated the way a brain's size and shape affect waves of electrical activity, better known as brain waves. The comparison showed that the new model provided a more accurate reconstruction of the brain activity shown in the MRI scans and brain activity maps than the prior model.