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.
Bio-psychosocial Approach. Definition: An approach that considers the influences of biological, psychological, and social-cultural factors Example: A psychologist takes a bio-psychological approach when presented with a depressed patient due to the numerous possibilities of the cause.