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Constructing Visual Perception of Body Movement with the Motor Cortex

Orgs, G; Dovern, A; Hagura, N; Haggard, P; Fink, GR; Weiss, PH; (2015) Constructing Visual Perception of Body Movement with the Motor Cortex. Cerebral Cortex , 26 (1) pp. 440-449. 10.1093/cercor/bhv262. Green open access

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Abstract

The human brain readily perceives fluent movement from static input. Using functional magnetic resonance imaging, we investigated brain mechanisms that mediate fluent apparent biological motion (ABM) perception from sequences of body postures. We presented body and nonbody stimuli varying in objective sequence duration and fluency of apparent movement. Three body postures were ordered to produce a fluent (ABC) or a nonfluent (ACB) apparent movement. This enabled us to identify brain areas involved in the perceptual reconstruction of body movement from identical lower-level static input. Participants judged the duration of a rectangle containing body/nonbody sequences, as an implicit measure of movement fluency. For body stimuli, fluent apparent motion sequences produced subjectively longer durations than nonfluent sequences of the same objective duration. This difference was reduced for nonbody stimuli. This body-specific bias in duration perception was associated with increased blood oxygen level-dependent responses in the primary (M1) and supplementary motor areas. Moreover, fluent ABM was associated with increased functional connectivity between M1/SMA and right fusiform body area. We show that perceptual reconstruction of fluent movement from static body postures does not merely enlist areas traditionally associated with visual body processing, but involves cooperative recruitment of motor areas, consistent with a “motor way of seeing”.

Type: Article
Title: Constructing Visual Perception of Body Movement with the Motor Cortex
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/cercor/bhv262
Publisher version: http://doi.org/10.1093/cercor/bhv262
Language: English
Additional information: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Keywords: Science & Technology, Life Sciences & Biomedicine, Neurosciences, Neurosciences & Neurology, biological motion, EBA, FBA, motor resonance, M1, visual body perception, BIOLOGICAL MOTION PERCEPTION, ACTION OBSERVATION NETWORK, APPARENT MOTION, MIRROR NEURONS, ACTION REPRESENTATION, TEMPORAL BISECTION, NEURAL MECHANISMS, OCCIPITAL CORTEX, STATIC IMAGES, FMRI
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
URI: https://discovery.ucl.ac.uk/id/eprint/1481312
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