Electrical neuroimaging evidence that spatial frequency-based selective attention affects V1 activity as early as 40-60 ms in humans |
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Authors: | Alice M Proverbio Marzia Del Zotto and Alberto Zani |
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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 |
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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. |
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