Physiological psychology is a branch of psychology that focuses on the description and interpretation of psychological phenomena based on physiological and neurological processes. The term was coined by Wilhelm Font. The subject of this branch of psychology is those processes that can be accessed through external and internal observation and have a physiological and psychological aspect. According to this method, physiological psychology is experimental psychology. Within the framework of physiological psychology, physiological psychology and neuropsychology have emerged, in which the neural mechanisms of mental processes are studied