Stockman, A;
Henning, GB;
Rider, AT;
(2017)
Linear-nonlinear models of the red-green chromatic pathway.
Journal of Vision
, 17
(13)
pp. 1-17.
10.1167/17.13.7.
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Abstract
The mean hue of flickering waveforms comprising only the first two harmonics depends on their temporal alignment. We evaluate explanatory models of this hue-shift effect using previous data obtained using L- and M-cone-isolating stimuli together with chromatic sensitivity and hue discrimination data. The key questions concerned what type of nonlinearity produced the hue shifts, and where the nonlinearities lay with respect to the early band-pass and late low-pass temporal filters in the chromatic pathways. We developed two plausible models: (a) a slew-rate limited nonlinearity that follows both early and late filters, and (b) a half-wave rectifying nonlinearity-consistent with the splitting of the visual input into ON- and OFF-channels-that lies between the early and late filters followed by a compressive nonlinearity that lies after the late filter.
| Type: | Article |
|---|---|
| Title: | Linear-nonlinear models of the red-green chromatic pathway |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1167/17.13.7 |
| Publisher version: | http://doi.org/10.1167/17.13.7 |
| Language: | English |
| Additional information: | Copyright © 2017 The Authors. This work is licensed under a Creative Commons Attribution 4.0 International License. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Institute of Ophthalmology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10037984 |
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