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Scotopic contrast hues displaced toward blue
Author(s) -
STABELL ULF,
STABELL BJØRN
Publication year - 1974
Publication title -
scandinavian journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 72
eISSN - 1467-9450
pISSN - 0036-5564
DOI - 10.1111/j.1467-9450.1974.tb00568.x
Subject(s) - scotopic vision , hue , afterimage , contrast (vision) , psychology , color vision , chemistry , optics , physics , neuroscience , computer vision , retina , computer science , image (mathematics)
.— Pre‐stimulation with a neutral white light, in a dark‐adapted state, produced a disposition for a scotopic hue of violet of about 463 nm. The observation may be explained on the basis of Helmholtz's theory of complementary negative afterimages, provided that (1) the assumption that neutral white is observed when the three types of cone receptors are activated to about the same degree, is rejected, and (2) the origin of the scotopic contrast hues is assumed to be located centrally to the photochemical systems of the receptors.