One of the vital concepts of psychiatry is the emphasis on the functions of the personality as a whole. Such an emphasis involves a consideration of an integrated person—integrated from less complex functional units at lower levels—physicochemical, anatomic and physiologic. Such a concept makes imperative a study of the integrating forces, especially at the psychobiologic level and at the next lower level, the physiologic. In the integration of physiologic and psychobiologic functions, the activity of the central nervous system, of the vegetative nervous system and of the endocrine system is of major importance. The behavior and mentation of the individual as a whole make use of the functioning of these systems. It follows that a study of the activity of these systems is a necessary part of the understanding of the individual psychiatric patient, and consequently that adequate methods of examination of these systems are necessary.
Many a physiologic technic
LEVINE M. MEASUREMENT OF ELECTRICAL SKIN RESISTANCE. Arch NeurPsych. 1933;29(4):828–842. doi:10.1001/archneurpsyc.1933.02240100147012