A review of the neuropsychological systems forming the substrate of human behavior. Emphasis is placed on the continuity of underlying neuro-physiological mechanisms and overt behavior patterns, including disease processes and brain pathology. Includes the following areas of study: nerve cells, synaptic processes, anatomy of the nervous system, development and brain plasticity, visual system, auditory system, mechanical and chemical senses, muscular movement, biorhythms and sleep, homeostatic processes, reproduction, emotion, learning and memory, lateralization and language, alcoholism, mood disorders, and schizophrenia.