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The effect of spatial frequency on binocular contrast inhibition
Author(s) -
Pardhan Shahina,
Gilchrist Jim,
Douthwaite William
Publication year - 1989
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1989.tb00804.x
Subject(s) - monocular , contrast (vision) , spatial frequency , binocular vision , optics , binocular disparity , mathematics , filter (signal processing) , stereopsis , physics , computer vision , computer science
Previous work has shown that binocular contrast summation, obtained with equal monocular sensitivities, remains constant over a range of spatial frequencies. We measured binocular contrast detection with a log 1.00 ND filter placed in front of one eye. For all eight subjects, the binocular contrast detection decreased to a level below that of the monocular detection, demonstrating a contrast analogy to Fechner's paradox. The degree of binocular inhibition, like summation, remained constant across the range of spatial frequencies.