Neuroevolutionary mechanisms of cerebral asymmetry in man.

Cerebral asymmetry in man has by and large been interpreted in terms of differences at the level of hemispheric organization. The inadequacy of a hemispheric interpretation as a biological account of asymmetry is discussed and a model of the neural mechanisms of cerebral asymmetry is developed. The model focuses on the functional organization of the inferior parietal cortex in human and non-human primates and accounts for the evolution and expression of cerebral asymmetry in man in terms of specific adaptations in select neural systems of ancestral primate brains.