Montaser-Kouhsari, Leila and Moradi, Farshad and Zandvakili, Amin and Esteky, Hossein (2004) Orientation-selective adaptation during motion-induced blindness. Perception and Psychophysics, 33 (2). pp. 249-254. ISSN 0031-5117. http://resolver.caltech.edu/CaltechAUTHORS:20130816-103215874
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When a global moving pattern is superimposed on high-contrast stationary or slowly moving stimuli, the latter occasionally disappear for periods of several seconds (motion-induced blindness, MIB). Here, an adaptation paradigm was used to determine if orientation-selective adaptation still occurs for the stimulus that is no longer visible. Two slowly drifting high-contrast Gabor patches were presented to observers. As soon as both patches disappeared, one was eliminated from the screen. After 2 s, two low-contrast Gabor patches were presented as tests at the same locations and observers were asked to report their orientations. The observers' performance was significantly higher when the orientation of the low-contrast test patch was orthogonal to the orientation of the high-contrast adapting patch (p < 0.0001) for the location where the patch was present during MIB, even though it was perceptually invisible. The observers' performance was not significantly different at the adjacent control location where the stimulus was absent during the MIB. Although no stimulus was visible at either location, orientation-selective adaptation was preserved only for the location at which the patch remained present. Since orientation information is processed in low-level visual areas such as the primary visual cortex (V1), we conclude that MIB originates in an area higher than V1.
|Additional Information:||c2004 a Pion publication. Received 2 February 2003, in revised form 30 August 2003; published online 26 February 2004 . We wish to thank Patrick Cavanagh, Zoe Kourtzi, Ian Thornton, Shinsuke Shimojo, Reza Rajimehr, and three anonymous reviewers for their helpful comments on the manuscript. This work was supported by the School of Cognitive Sciences (SCS), Iranian Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran.|
|Group:||Koch Laboratory, KLAB|
|Official Citation:||Montaser-Kouhsari L, Moradi F, Zandvakili A, Esteky H, 2004, "Orientation-selective adaptation during motion-induced blindness" Perception 33(2) 249 – 254|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||KLAB Import|
|Deposited On:||12 Jan 2008 00:04|
|Last Modified:||15 Nov 2013 00:01|
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