4.6 Article

Dynamics of Visual Adaptation With Simultaneous Stimulation of Two Visual Pathways

Journal

FRONTIERS IN NEUROSCIENCE
Volume 15, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fnins.2021.719499

Keywords

color vision; adaptation; visual pathways; color higher-order mechanisms; psychophysics

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Funding

  1. UIC Core Grant for Vision Research [P30-EY01792]

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The study found that the retinal ganglion cells in different visual pathways of primates can adapt independently. When simultaneously stimulating two visual pathways, the adaptation speed is slower compared to stimulating one pathway. The speed of adaptation was also found to depend on which two pathways are combined.
Primates' retinal ganglion cells in different visual pathways have been shown to adapt independently (Current Biology 22 (2012) 220-224). However, the manner in which adaptation occurs under simultaneous stimulation of two visual pathways has not yet been explored. In this study, the dynamics of color afterimages were measured while stimulating one or two visual pathway using a time-varying afterimage paradigm. The dynamics of adaptation was approximately equivalent among the three primary visual pathways, but adaptation was slower for simultaneous stimulation of two visual pathways compared to the stimulation of one visual pathway. In addition, we found that the speed of adaptation also depends upon which two pathways are combined. We developed a two-stage adaptation model, both with the same dynamics, to account for the results with simultaneous stimulation of two pathways.

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