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Electrical neuroimaging evidence that spatial frequency-based selective attention affects V1 activity as early as 40-60 ms in humans
Authors:Alice M Proverbio  Marzia Del Zotto and Alberto Zani
Institution:(1) Dept. of Psychology, University of Milano-Bicocca, Milan, Italy;(2) Laboratory of Experimental Neuropsychology, Neuropsychology Unit, Geneva University Hospital, Switzerland;(3) Inst. of Bioimaging and Molecular Physiology, CNR, Milano-Segrate, Italy
Abstract:

Background  

Karns and Knight (2009) 1] demonstrated by using ERP and gamma band oscillatory responses that intermodal attention modulates visual processing at the latency of the early phase of the C1 response (62-72 ms) thought to be generated in the primary visual cortex. However, the timing of attentional modulation of visual cortex during object-based attention remains a controversial issue.
Keywords:
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