Simultaneous chromatic and luminance human electroretinogram responses.

The Journal of Physiology
N R A ParryJan Kremers

Abstract

The parallel processing of information forms an important organisational principle of the primate visual system. Here we describe experiments which use a novel chromatic–achromatic temporal compound stimulus to simultaneously identify colour and luminance specific signals in the human electroretinogram (ERG). Luminance and chromatic components are separated in the stimulus; the luminance modulation has twice the temporal frequency of the chromatic modulation. ERGs were recorded from four trichromatic and two dichromatic subjects (1 deuteranope and 1 protanope). At isoluminance, the fundamental (first harmonic) response was elicited by the chromatic component in the stimulus. The trichromatic ERGs possessed low-pass temporal tuning characteristics, reflecting the activity of parvocellular post-receptoral mechanisms. There was very little first harmonic response in the dichromats' ERGs. The second harmonic response was elicited by the luminance modulation in the compound stimulus and showed, in all subjects, band-pass temporal tuning characteristic of magnocellular activity. Thus it is possible to concurrently elicit ERG responses from the human retina which reflect processing in both chromatic and luminance pathways. As well as ...Continue Reading

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Citations

Aug 20, 2015·Documenta Ophthalmologica. Advances in Ophthalmology·Andrew J ZeleJan Kremers
Sep 23, 2016·Documenta Ophthalmologica. Advances in Ophthalmology·Jan Kremers, Deepak Bhatt
Apr 4, 2014·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Declan McKeefryNeil R A Parry
Apr 4, 2014·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Jan KremersNeil R A Parry
Apr 4, 2014·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Deepika KommanapalliDeclan J McKeefry
Mar 15, 2016·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Tina I TsaiJan Kremers
Aug 8, 2015·Journal of Neurophysiology·Tina I TsaiJan Kremers
Mar 28, 2019·Journal of Vision·Alódia BrasilJan Kremers
Nov 10, 2016·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Cord Huchzermeyer, Jan Kremers
Apr 1, 2018·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Avinash J AherJan Kremers
Jan 29, 2021·Documenta Ophthalmologica. Advances in Ophthalmology·Kallene Summer VidalJan Kremers
Apr 2, 2021·Experimental Eye Research·Jan KremersLaura J Frishman

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