The platysma changes the facial expression which plays an important role in human social behavior. In elderly people â when the skin increasingly loses its elasticity â both inner faces of the platysma form two longitudinal wrinkles on the neck.
Biological psychology is a branch of psychology that studies the physiological causes of behavior. This field is sometimes referred to as behavioral neuroscience or biopsychology.
Medical Definition of COGNITIVE PSYCHOLOGY. : a branch of psychology concerned with mental processes (as perception, thinking, learning, and memory) especially with respect to the internal events occurring between sensory stimulation and the overt expression of behaviorâcompare behaviorism. â cognitive psychologist noun.