ABSTRACT
Developments in the knowledge of the brain promise to have a profound influence on epistomology. In scientific and philosophic writings, it has been customary to regard the human brain as a global organ dominated by the cerebral cortex which serves as a tabula rasa for an everchanging translation of sensory and perceptive experience into symbolic language, and which has special capacities for learning, memory, problem solving, and transmission of culture from one generation to another. Such a view is blind to the consideration that in its evolution the human brain has expanded along lines of three basic patterns which may be characterized as reptilian, paleomammalian, and neomammalian. Radically different in structure and chemistry and in an evolutionary sense countless generations apart, the three formations constitute, so-to-speak, three brains in one, a triune brain.
