Double Dissociation of V1 and V5/MT activity in Visual Awareness | Zendy

Juha Silvanto | Zendy; Nilli Lavie | Zendy; Vincent Walsh | Zendy

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Double Dissociation of V1 and V5/MT activity in Visual Awareness

Author(s) -

Juha Silvanto,

Nilli Lavie,

Vincent Walsh

Publication year - 2005

Publication title -

cerebral cortex

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.694

H-Index - 250

eISSN - 1460-2199

pISSN - 1047-3211

DOI - 10.1093/cercor/bhi050

Subject(s) - stimulus (psychology) , transcranial magnetic stimulation , psychology , dissociation (chemistry) , neuroscience , stimulation , audiology , cognitive psychology , chemistry , medicine

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.

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