The timing of feedback to early visual cortex in the perception of long-range apparent motion

  • When 2 visual stimuli are presented one after another in different locations, they are often perceived as one, but moving object. Feedback from area human motion complex hMT/V5+ to V1 has been hypothesized to play an important role in this illusory perception of motion. We measured event-related responses to illusory motion stimuli of varying apparent motion (AM) content and retinal location using Electroencephalography. Detectable cortical stimulus processing started around 60-ms poststimulus in area V1. This component was insensitive to AM content and sequential stimulus presentation. Sensitivity to AM content was observed starting around 90 ms post the second stimulus of a sequence and most likely originated in area hMT/V5+. This AM sensitive response was insensitive to retinal stimulus position. The stimulus sequence related response started to be sensitive to retinal stimulus position at a longer latency of 110 ms. We interpret our findings as evidence for feedback from area hMT/V5+ or a related motion processing area to early visual cortices (V1, V2, V3).

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Author:Michael WibralORCiDGND, Christoph BledowskiORCiDGND, Axel Kohler, Wolf SingerORCiDGND, Lars MuckliORCiDGND
Pubmed Id:
Parent Title (English):Cerebral cortex
Publisher:Oxford Univ. Press
Place of publication:Oxford
Document Type:Article
Date of Publication (online):2008/11/25
Date of first Publication:2008/11/13
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2008/11/25
Tag:apparent motion; electroencephalography; event-related potential; feedback; visual illusion
Page Number:16
First Page:1567
Last Page:1582
© 2008 The Authors ; This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Institutes:Medizin / Medizin
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell 2.0