The Platysma. The platysma is a paired flat, superficial neck muscle. It is counted among the mimic musculature. The platysma extends from the facial skin slightly above the insertions of the lower jaw to about the height of the second rib. It proceeds upward along the front side of the neck crossing the collar bone.
Biological psychology, or biopsychology, is a field in which the mind-body connection is explored through scientific research and clinical practice.
Definition of psychology. Psychology is the scientific study of human and animal behavior with the object of understanding why living beings behave as they do. As almost any science, its discoveries have practical applications. As it is a rather new science, applications are sometimes confused with the science itself.