Attention to visual motion suppresses neuronal and behavioral sensitivity in nearby feature space

Sang-Ah Yoo, Julio C. Martinez-Trujillo, Stefan Treue, John K. Tsotsos & Mazyar Fallah
Abstract Background Feature-based attention prioritizes the processing of the attended feature while strongly suppressing the processing of nearby ones. This creates a non-linearity or “attentional suppressive surround” predicted by the Selective Tuning model of visual attention. However, previously reported effects of feature-based attention on neuronal responses are linear, e.g., feature-similarity gain. Here, we investigated this apparent contradiction by neurophysiological and psychophysical approaches. Results Responses of motion direction-selective neurons in area MT/MST of monkeys were recorded...
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