S-cone contribution to pupillary responses evoked by chromatic flash offset
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Published on: May 6, 2015
1Department of Psychology, Faculty of Letters, Chiba University, Japan. kimura@esop.1.chiba-u.ac.jp
Abstract:
On a green or red background, the action spectrum of the pupillary responses evoked following the offset of chromatic test flashes shows a prominent short-wavelength lobe and suggests the contribution from photoreceptors other than the previously inferred M- and L-cones (Kimura & Young, Vision Research (1996). 36, 1543-1550), most likely from S-cones. Systematic changes in the shape of the intensity versus amplitude functions with test wavelengths and in the shape of the short-wavelength lobe with response amplitude criteria suggest an antagonistic interaction involving the short- and longer-wavelength photoreceptors.
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