Accession Number : AD0781334
Title : Spatial Sensitization by Sinusoidally Modulated Backgrounds.
Descriptive Note : Technical rept.,
Corporate Author : ROCHESTER UNIV N Y CENTER FOR VISUAL SCIENCE
Personal Author(s) : Nelson,Michael A.
Report Date : MAY 1974
Pagination or Media Count : 63
Abstract : The response of the visual system to increment flashes presented on sinusoidally flickering backgrounds is not linear in relation to the stimulus conditions employed in these experiments. The mechanisms which determine increment thresholds on flickering backgrounds have many characteristics which are similar to the receptive field organization of retinal ganglion cells. A model of sensitization based on the disturbing influence on increment thresholds of nearby contours does not appear to be consistent with these data, whereas center-surround models appear to account for the data well.
Descriptors : *Spatial distribution, *Psychophysics, *Visual perception, Stimuli, Psychophysiology, Sensitizing, Thresholds(Physiology), Retina, Light, Flashes
Subject Categories : Psychology
Anatomy and Physiology
Distribution Statement : APPROVED FOR PUBLIC RELEASE