TY  - JOUR
A1  - Muckli, Lars
A1  - Kohler, Axel
A1  - Kriegeskorte, Nikolaus
A1  - Singer, Wolf
T1  - Primary visual cortex activity along the apparent-motion trace reflects illusory perception
T2  - PLoS biology
N2  - The illusion of apparent motion can be induced when visual stimuli are successively presented at different locations. It has been shown in previous studies that motion-sensitive regions in extrastriate cortex are relevant for the processing of apparent motion, but it is unclear whether primary visual cortex (V1) is also involved in the representation of the illusory motion path. We investigated, in human subjects, apparent-motion-related activity in patches of V1 representing locations along the path of illusory stimulus motion using functional magnetic resonance imaging. Here we show that apparent motion caused a blood-oxygenation-level-dependent response along the V1 representations of the apparent-motion path, including regions that were not directly activated by the apparent-motion-inducing stimuli. This response was unaltered when participants had to perform an attention-demanding task that diverted their attention away from the stimulus. With a bistable motion quartet, we confirmed that the activity was related to the conscious perception of movement. Our data suggest that V1 is part of the network that represents the illusory path of apparent motion. The activation in V1 can be explained either by lateral interactions within V1 or by feedback mechanisms from higher visual areas, especially the motion-sensitive human MT/V5 complex.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2711
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-26728
UR  - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1175820
SN  - 1545-7885
SN  - 1544-9173
N1  - Copyright: © 2005 Muckli et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
VL  - 3
IS  - (8):e265
SP  - 0001
EP  - 0010
PB  - PLoS
CY  - Lawrence, Kan.
ER  -