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.
The biological approach to psychology, also known as neuropsychology, is one of many approaches used to explain human mental processes and behavior. Neuropsychologists are psychologists that examine mental processes and behavior using a biological approach.