Contribution of chromatic aberrations to color signals in the primate visual system

Journal of Vision
J D FortePaul R Martin

Abstract

We measured responses to red-green color variation in parvocellular (PC) neurons in the lateral geniculate nucleus of dichromatic ("red-green color blind") marmoset monkeys. Although these animals lack distinct visual pigments to distinguish between wavelengths in this range, many of the colored stimuli nevertheless produced robust responses in PC cells. We show that these responses, which are restricted to high stimulus spatial frequencies (fine image details), arise from chromatic aberrations in the eye. The neural signals produced by chromatic aberrations are of comparable magnitude to signals produced by high-frequency luminance (LUM) modulation and thus could influence cortical pathways for processing of color and object recognition. The fact that genetically "color-blind" primates are not necessarily blind to wavelength-dependent contours in the visual world may have enabled red-green color vision to become linked with high-acuity spatial vision during primate evolution.

Citations

Nov 25, 2006·The Journal of Physiology·J D VictorP R Martin
Apr 14, 2011·The Journal of Physiology·Paul R MartinJason D Forte
Dec 22, 2006·Neural Networks : the Official Journal of the International Neural Network Society·Tony Vladusich
May 15, 2013·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Frances J Rucker
Jan 25, 2017·The Journal of Physiology·Alexander N J PietersenSamuel G Solomon
Jul 16, 2017·Vision Research·Barry B LeeDingcai Cao
Oct 10, 2013·Visual Neuroscience·Bevil R Conway
May 8, 2010·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Preeti GuptaAndrew J Zele

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