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The Hand Sees Visual Periphery Better Than the Eye: Motor-Dependent Visual Motion Analyses

Gomi, Hiroaki and Abekawa, Naotoshi and Shimojo, Shinsuke (2013) The Hand Sees Visual Periphery Better Than the Eye: Motor-Dependent Visual Motion Analyses. Journal of Neuroscience, 33 (42). pp. 16502-16509. ISSN 0270-6474. PMCID PMC6618533. doi:10.1523/JNEUROSCI.4741-12.2013.

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Information pertaining to visual motion is used in the brain not only for conscious perception but also for various kinds of motor controls. In contrast to the increasing amount of evidence supporting the dissociation of visual processing for action versus perception, it is less clear whether the analysis of visual input is shared for characterizing various motor outputs, which require different kinds of interactions with environments. Here we show that, in human visuomotor control, motion analysis for quick hand control is distinct from that for quick eye control in terms of spatiotemporal analysis and spatial integration. The amplitudes of implicit and quick hand and eye responses induced by visual motion stimuli differently varied with stimulus size and pattern smoothness (e.g., spatial frequency). Surprisingly, the hand response did not decrease even when the visual motion with a coarse pattern was mostly occluded over the visual center, whereas the eye response markedly decreased. Since these contrasts cannot be ascribed to any difference in motor dynamics, they clearly indicate different spatial integration of visual motion for the individual motor systems. Going against the overly unified hierarchical view of visual analysis, our data suggest that visual motion analyses are separately tailored from early levels to individual motor modalities. Namely, the hand and eyes see the external world differently.

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Additional Information:© 2013 the authors. Received Oct. 6, 2012; revised Aug. 21, 2013; accepted Sept. 9, 2013. Author contributions: H.G. designed research; H.G. and N.A. performed research; H.G. contributed unpublished reagents/analytic tools; H.G. analyzed data; H.G. and S.S. wrote the paper. This work was supported by the ERATO Shimojo Implicit Brain Function Project, Japan Science and Technology Agency. We thank S. Nishida, T. Kimura, and D. Whitney for constructive discussions and N. Ueda, E. Maeda, and M. Kashino for support and encouragement. We also thank anonymous reviewers for valuable comments and suggestions.
Funding AgencyGrant Number
Japan Science and Technology AgencyUNSPECIFIED
ERATO Shimojo Implicit Brain Function ProjectUNSPECIFIED
Issue or Number:42
PubMed Central ID:PMC6618533
Record Number:CaltechAUTHORS:20131101-105324816
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42188
Deposited By: Tony Diaz
Deposited On:01 Nov 2013 18:31
Last Modified:10 Nov 2021 16:19

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