Striate cortex (v1) activity Gates awareness of motion

Nature Neuroscience 8 (2):143-144 (2005)

Abstract
A key question in understanding visual awareness is whether any single cortical area is indispensable. In a transcranial magnetic stimulation experiment, we show that observers' awareness of activity in extrastriate area VS depends on the amount of activity in striate cortex (Vl). From the timing and pattern of effects, we infer that back-projections from extrastriate cortex influence information content in Vl, but it is Vl that determines whether that information reaches awareness.
Keywords *Motion Perception  *Sensory Gating  *Visual Cortex  *Visual Perception
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The Neurobiology of Blindsight.Alan Cowey & Petra Stoerig - 1991 - Trends in Neurosciences 14:140-5.

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