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Nat Neurosci. 2009 Jan;12(1):24-5. doi: 10.1038/nn.2223. Epub 2008 Nov 23.

Feature-based attention modulates feedforward visual processing.

Author information

1
Center for Mind and Brain, University of California Davis, 267 Cousteau Place, Davis, California 95618, USA. wwzhang@ucdavis.edu

Abstract

It is widely believed that attention selects locations at an earlier stage than it selects nonspatial features, but this has been tested only under conditions of minimal competition. We found that, when competition was increased, color-based attention was able to influence the feedforward flow of information in humans within 100 ms of stimulus onset, even for stimuli presented at unattended locations. Thus, color-based attention can operate as early as, and independently from, spatial attention.

PMID:
19029890
DOI:
10.1038/nn.2223
[Indexed for MEDLINE]

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