Psychophysics is a branch of experimental psychology that examines the science of psychology (i.e., the study of psychology, psychiatry, psychology, psychology, psychology, psychology, psychology, psychology, psychology, psychiatry, psychology, psychology, psychology, psychiatry, psychology, psychology, psychology, psychiatry, psychology, psychology, or psychiatry. In a broader context. Psychophysics can be considered as a psychophysiology of the human body. Founded by Gustav Fichner (“Elements of Psychophysiology”, 1860). who formulated the psychophysical law of physics (which is also known as the psychophysical law of physics)