Accession Number : AD0693039
Title : ROD AND CONE CONTRIBUTIONS TO S-POTENTIALS FROM CAT RETINA.
Descriptive Note : Joint rept.,
Corporate Author : NAVAL AEROSPACE MEDICAL INST PENSACOLA FLA
Personal Author(s) : Steinberg,Roy H.
Report Date : 02 JUN 1969
Pagination or Media Count : 19
Abstract : The problem of whether the rods contribute to S-potentials was studied in the intact eye of the cat. S-potentials from luminosity units (L-units) were evoked by small spots of relatively monochromatic light in dark- and light-adapted retinae. The spectral sensitivity curve for dark-adapted S-potentials had its maximum at 500 nm, and the form of dark-adapted responses also suggested that rods were excited. The spectral sensitivity curve for light-adapted S-potentials had its maximum at 560 nm, and response latencies even at threshold were much faster than in dark adaptation. Individual S-potentials exhibited Purkinje shifts. It is concluded that rhodopsin rods contribute to S-potentials (L-type) in the cat and that cones contribute to the same responses. (Author)
Descriptors : (*RETINA, RESPONSE(BIOLOGY)), NERVE IMPULSES, ELECTROPHYSIOLOGY, CATS, LIGHT, ADAPTATION(PHYSIOLOGY), VISION, COLOR VISION, INTENSITY, VOLTAGE
Subject Categories : Anatomy and Physiology
Distribution Statement : APPROVED FOR PUBLIC RELEASE