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Adapting to an aftereffect

Sheth, Bhavin R. and Shimojo, Shinsuke (2008) Adapting to an aftereffect. Journal of Vision, 8 (3). Art. No. 29. ISSN 1534-7362. doi:10.1167/8.3.29.

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We report a new type of orientation-contingent color aftereffect in which the color aftereffect is opposite to the classical McCollough effect, i.e., the perceived color of the aftereffect is the same as the inducer's color. Interleaved exposure to red, horizontal and achromatic (gray), horizontal gratings led to a long-lasting aftereffect in which achromatic horizontal gratings appeared reddish. The effect, termed the anti-McCollough effect, although weaker than the classical aftereffect, remained stable for a moderate duration of time (24 hours). Unlike the classical aftereffect, which is known to not transfer interocularly, the new after-aftereffect transferred 100%, suggesting that its locus in the brain was downstream of the classical effect. It is likely that neurons in a higher-order area adapted to the classical color aftereffect that was represented in a lower-order area, thus forming an aftereffect of an aftereffect, i.e., an after-aftereffect. Our finding has implications as to how neural activity in lower- and higher-level areas in the brain interacts to yield conscious visual experience.

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Additional Information:© ARVO 2008. Received July 26, 2007; published March 27, 2008. The research was supported by a GEAR grant from the University of Houston (B.R.S.), a Cline Discovery Grant-Caltech (B.R.S.), and the JST.ERATO Shimojo project (S.S.). We thank Saumil Patel and two anonymous reviewers for their thoughtful criticisms. Commercial relationships: none.
Funding AgencyGrant Number
University of HoustonUNSPECIFIED
Cline Discovery GrantUNSPECIFIED
Japan Science and Technology AgencyUNSPECIFIED
Subject Keywords:neural adaptation, visual hierarchy, consciousness, visual awareness, conditioning
Issue or Number:3
Record Number:CaltechAUTHORS:SHEjov08
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Official Citation:Sheth, B. R., & Shimojo, S. (2008). Adapting to an aftereffect. Journal of Vision, 8(3):29, 1–10,, doi:10.1167/8.3.29.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10775
Deposited By: Archive Administrator
Deposited On:09 Jun 2008
Last Modified:08 Nov 2021 21:10

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