Psychology
scientific study of behavior – the scientific study of all overt activities of the organism as well as all the internal processes that are presumed to underlie them (learning, motivation, etc.)
Hebb
developed the first comprehensive theory of how complex psychological phenomena, such as perceptions, emotions, thoughts, and memories, might be produced by brain activity
biopsychology
the scientific study of the biology of behavior. Sometimes referred to as psychobiology, behavioral biology, or behavioral neuroscience. Biological approach to the study of psychology.