ABSTRACT
The frontal lobes, it is often said, are the regions of the brain which have undergone the greatest expansion in evolution, represent the highest centers of human intelligence, and are the sites of the most complex and highly evolved mental functions. In human and animal studies, the frontal lobes have been associated with self-consciousness, moral behavior and foresight, the awareness of social norms, habituation, drive, abstract thinking and judgment. Frontal lobe mechanisms which have been proposed to underlie these capacities include synthetic or integrative functions, motivation, recent memory, selective attention, and planning.
