Left Brain vs Right Brain

By Ben Cohen

A fascinating article from the Scientific American on the evolutionary origins of the two sides of our brains. The key points of the (very) lengthy piece:

The authors have proposed that the specialization of the

brain’s two hemispheres was already in place when vertebrates arose 500

million years ago.

The left hemisphere originally seems to

have focused in general on controlling well-established patterns of

behavior; the right specialized in detecting and responding to

unexpected stimuli.

Both speech and right-handedness may have evolved from a specialization for the control of routine behavior.

Face recognition and the processing of spatial relations may trace their heritage to a need to sense predators quickly.

Photo by Gaetan Lee

Ben Cohen is the editor and founder of The Daily Banter. He lives in Washington DC where he does podcasts, teaches Martial Arts, and tries to be a good father. He would be extremely disturbed if you took him too seriously.