TY  - JOUR
A1  - Wibral, Michael
A1  - Bledowski, Christoph
A1  - Kohler, Axel
A1  - Singer, Wolf
A1  - Muckli, Lars
T1  - The timing of feedback to early visual cortex in the perception of long-range apparent motion
T2  - Cerebral cortex
N2  - 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).
KW  - apparent motion
KW  - electroencephalography
KW  - event-related potential
KW  - feedback
KW  - visual illusion
Y1  - 2008
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6053
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-60548
SN  - 1460-2199
SN  - 1047-3211
N1  - © 2008 The Authors ; This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
VL  - 19
IS  - 7
SP  - 1567
EP  - 1582
PB  - Oxford Univ. Press
CY  - Oxford
ER  -