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Effects of colour adaptation and stimulus size on the detection of chromatic deviations from achromatic as a function of eccentricity in man
Author(s) -
Iivanainen Antti,
Rovamo Jyrki
Publication year - 1994
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.1475-1313.1994.tb00133.x
Subject(s) - achromatic lens , chromaticity , chromatic scale , chromatic adaptation , hue , stimulus (psychology) , optics , color vision , visual field , psychophysics , physics , mathematics , visual angle , detection threshold , perception , artificial intelligence , computer vision , psychology , computer science , neuroscience , cognitive psychology , real time computing
By using constant size and M‐scaled stimuli (the stimulus size was magnified towards the visual field periphery in inverse proportion to the lowest local sampling density of the human retina) we measured the thresholds for perceiving the complementary colours of blue, green and red (i.e. yellow, purple or blue‐green) under chromatic adaptation at the eccentricities of 0–15° in the nasal visual field. The CIE 1931 (x, y) chromaticity coordinates corresponding to complementary hue perception were subtracted from the chromaticity coordinates of achromatic threshold. The difference was found to be constant irrespective of stimulus size and eccentricity. This means that the perception (if chromatic deviation from achromatic under chromatic adaptation is independent of stimulus size and eccentricity.