Moradi, Farshad and Shimojo, Shinsuke (2004) Suppressive effect of sustained low-contrast adaptation followed by transient high-contrast on peripheral target detection. Vision Research, 44 (5). pp. 449-460. ISSN 0042-6989. http://resolver.caltech.edu/CaltechAUTHORS:20130816-103216311
- Published Version
See Usage Policy.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20130816-103216311
We observed that presenting a low-contrast Gabor patch (2 cpd, 5° eccentricity, contrast=4%) for 8 s and then flashing a 20–30 ms high-contrast patch over it could elicit the perceptual disappearance of a subsequent low-contrast stimulus, whereas neither low-contrast adaptation nor high-contrast flash alone had any considerable effect (p<0.00001). In other experiments we found (a) suppressive components are phase-insensitive, (b) the effect transfers between eyes, (c) suppression is selective for orientation, and (d) the induction by the transient high-contrast Gabor patch could be transferred to another previously adapted location up to a few degrees. Results indicate synergy between contrast and adaptation through a non-linear interaction between rapid gain adjustment to transient change and adaptation to sustained spatial patterns. Findings are compatible with non-local mechanisms presumably at the cortical level.
|Additional Information:||Received 4 March 2003; received in revised form 2 October 2003. c2003 Elsevier Ltd.|
|Group:||Koch Laboratory, KLAB|
|Subject Keywords:||Contrast and edge adaptation; Peripheral visual field; Detection; Filling-in; Troxler fading; Visual transients|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||KLAB Import|
|Deposited On:||11 Mar 2010 06:04|
|Last Modified:||16 Sep 2013 18:18|
Repository Staff Only: item control page