Double dissociation of V1 and V5/MT activity in visual awareness

作者：Silvanto J^*; Lavie N; Walsh V

来源：Cerebral Cortex, 2005, 15(11): 1736-1741.

DOI：10.1093/cercor/bhi050

• awareness
• back-projections
• motion detection
• transcranial magnetic stimulation
• V1
• V5/MT

The critical time windows of the contribution of V1 and V5/MT to visual awareness of moving visual stimuli were compared by administering transcranial magnetic stimulation (TMS) to V1 or V5/MT in various time intervals from stimulus offset during performance of a simple motion detection task. Our results show a double dissociation in which the critical period of V1 both predates and postdates that of V5/MT, and where stimulation of either V1 at V5/MT's critical period or V5/MT at V1's critical period does not impair performance. These findings demonstrate the importance of back-projections from V5/MT to V1 in awareness of real motion stimuli.

• 出版日期2005-11