Journal
NATURE NEUROSCIENCE
Volume 9, Issue 10, Pages 1243-1245Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nn1761
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Funding
- NINDS NIH HHS [F31 NS051111-02, F31 NS051111] Funding Source: Medline
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Virtually all behavioral and neurophysiological studies have shown that sustained (endogenous, conceptually driven) attention enhances perception. But can this enhancement be held indefinitely? We assessed the time course of attention's effects on contrast sensitivity, reasoning that if attention does indeed boost stimulus strength, the strengthened representation could result in stronger adaptation over time. We found that attention initially enhances contrast sensitivity, but that over time sustained attention can actually impair sensitivity to an attended stimulus.
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