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.
Typically, a biological psychologist would first find a job, within a university system, as an assistant professor. They would then become an associate professor and ultimately a professor. The ideal goal is to become a professor with tenure. Tenure is job security in that it ensures a professor cannot be fired over something that is out of their hands.