High-level visual object representations are constrained by position.

ABSTRACT: It is widely assumed that high-level visual object representations are position-independent (or invariant). While there is sensitivity to position in high-level object-selective cortex, position and object identity are thought to be encoded independently in the population response such that position information is available across objects and object information is available across positions. Contrary to this view, we show, with both behavior and neuroimaging, that visual object representations are position-dependent (tied to limited portions of the visual field). Behaviorally, we show that the effect of priming an object was greatly reduced with any change in position (within- or between-hemifields), indicating nonoverlapping representations of the same object across different positions. F

SUBMITTER: Kravitz DJ 

PROVIDER: S-EPMC2978243 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature