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.
Biological psychiatry; an approach to psychiatry that aims to understand mental disorders in terms of the biological function of the nervous system. Child and adolescent psychiatry; the branch of psychiatry that specializes in work with children, teenagers, and their families.