Accession Number : AD0619951

Title :   MECHANISMS OF SPATIAL SUMMATION,

Corporate Author : DUNTLEY (S Q) LA JOLLA CALIF

Personal Author(s) : Harris,James L. ,Sr.

Report Date : MAY 1965

Pagination or Media Count : 27

Abstract : A number of investigators have postulated several possible mechanisms to account for the spatial summation which is exhibited by the human visual system. This report describes the results of an investigation to determine the extent to which retinal image quality together with the probability summation due to simultaneous stimulation of many receptors can account for the experimental evidence. It is shown that these two mechanisms are sufficient to produce the degree of spatial summation exhibited by the visual system and that the resulting visual performance is compatible with quantum limitations. (Author)

Descriptors :   (*VISION, MATHEMATICAL MODELS), RETINA, OPTICAL IMAGES, VISUAL SIGNALS, NERVE CELLS, SPACE PERCEPTION, PERFORMANCE(HUMAN), PROBABILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE