June 2017
Volume 17, Issue 7
Open Access
OSA Fall Vision Meeting Abstract  |   June 2017
Softwired cortical color opponency via winner-take-all competition among spiking neurons
Journal of Vision June 2017, Vol.17, 48. doi:10.1167/17.7.48
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      Vincent A. Billock; Softwired cortical color opponency via winner-take-all competition among spiking neurons. Journal of Vision 2017;17(7):48. doi: 10.1167/17.7.48.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Motivated by perception of reddish green and bluish yellow in retinally stabilized equiluminant images, Billock et al. (2001) created a softwired disruptable winner-take-all (WTA) model of cortical color opponency. This toy model was grounded in population dynamics and had variables representing neural response strength. A more realistic neural model is desirable. Wilson's model of spiking cortical neurons was employed and the simulated cortical neurons were coupled using inhibitory synapses and were driven by wavelength-selective geniculate cell spike rates from DeValois et al. Two candidate spiking WTA networks had different dynamic characteristics - each has potential applications to neural modeling. The WTA networks produce r-g and y-b opponent spike rates, which are converted into perceptual responses using Naka-Rushton-like functions derived from DeValois et al. and behavioral data. The resultant sensitivity-based opponent responses resemble Werner & Wooten's opponent average observer data.

Meeting abstract presented at the 2016 OSA Fall Vision Meeting

Billock, , Gleason, , Tsou, 2001. JOSA A 182389–2403
DeValois, , Abramov, , Jacobs, 1966. JOSA 56966–977 [CrossRef]
Werner, , Wooten, 1979. Perception & Psychophysics 69422–434
Wilson, 1999. Spikes, Decision and ActionsCambridge U Press
Footnotes
 Supported by NSF #1456650.
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