Effects of spatial and feature attention on disparity-rendered structure-from-motion stimuli in the human visual cortex.

ABSTRACT: An important advance in the study of visual attention has been the identification of a non-spatial component of attention that enhances the response to similar features or objects across the visual field. Here we test whether this non-spatial component can co-select individual features that are perceptually bound into a coherent object. We combined human psychophysics and functional magnetic resonance imaging (fMRI) to demonstrate the ability to co-select individual features from perceptually coherent objects. Our study used binocular disparity and visual motion to define disparity structure-from-motion (dSFM) stimuli. Although the spatial attention system induced strong modulations of the fMRI response in visual regions, the non-spatial system's ability to co-select features of the dSFM s

SUBMITTER: Ip IB 

PROVIDER: S-EPMC4061053 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature