Configural specificity of the lateral occipital cortex.

Neuropsychologia
Lawrence G AppelbaumAnthony M Norcia

Abstract

While regions of the lateral occipital cortex (LOC) are known to be selective for objects relative to feature-matched controls, it is not known what set of cues or configurations are used to promote this selectivity. Many theories of perceptual organization have emphasized the figure-ground relationship as being especially important in object-level processing. In the present work we studied the role of perceptual organization in eliciting visual evoked potentials from the object selective LOC. To do this, we used two-region stimuli in which the regions were modulated at different temporal frequencies and were comprised of either symmetric or asymmetric arrangements. The asymmetric arrangement produced an unambiguous figure-ground relationship consistent with a smaller figure region surrounded by a larger background, while four different symmetric arrangements resulted in ambiguous figure-ground relationships but still possessed strong kinetic boundaries between the regions. The surrounded figure-ground arrangement evoked greater activity in the LOC relative to first-tier visual areas (V1-V3). Response selectivity in the LOC, however, was not present for the four different types of symmetric stimuli. These results suggest that k...Continue Reading

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Oct 4, 2008·Journal of Vision·Lawrence G AppelbaumAnthony M Norcia
Jan 8, 2010·Journal of Vision·Lawrence G Appelbaum, Anthony M Norcia

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Citations

May 25, 2011·Schizophrenia Bulletin·Michael F GreenKristopher I Mathis
Apr 6, 2012·PloS One·Lawrence G AppelbaumAnthony M Norcia
Aug 5, 2014·Journal of Neuroscience Methods·Benoit R CottereauAnthony M Norcia
Nov 3, 2012·NeuroImage·Justin M AlesAnthony M Norcia
Aug 9, 2011·Vision Research·Jeremy D FesiRick O Gilmore
Sep 24, 2020·Scientific Reports·Elham Barzegaran, Anthony M Norcia
Aug 14, 2020·Journal of Psychiatry and Brain Science·Steven M SilversteinPamela D Butler
Nov 28, 2017·NeuroImage·Peter J KohlerAnthony M Norcia

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