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 believes us to be as a consequence of our genetics and physiology. It is the only approach in psychology that examines thoughts, feelings, and behaviors from a biological and thus physical point of view.Therefore, all that is psychological is first physiological.All thoughts, feeling & behaviour ultimately have a biological cause.A biological perspective is relevant to the study of psychology in three ways: 1. Comparative method: different species of animal can be studied and compared.herefore, all that is psychological is first physiological. All thoughts, feeling & behaviour ultimately have a biological cause. A biological perspective is relevant to the study of psychology in three ways: 1. Comparative method: different species of animal can be studied and compared.