Skip Navigation



Cerebral Cortex Advance Access published online on October 23, 2006
Cerebral Cortex, doi:10.1093/cercor/bhl101
This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow Supplementary Material
Right arrow All Versions of this Article:
17/8/1906    most recent
bhl101v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Christensen, M. S.
Right arrow Articles by Nielsen, J. B.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Christensen, M. S.
Right arrow Articles by Nielsen, J. B.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2006. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Article

Watching Your Foot Move--An fMRI Study of Visuomotor Interactions during Foot Movement

Mark Schram Christensen 1 *, Jesper Lundbye-Jensen 2, Nicolas Petersen 2, Svend Sparre Geertsen 2, Olaf B. Paulson 3, and Jens Bo Nielsen 2

1 Institute of Exercise and Sport Sciences, University of Copenhagen, Nørre Allé 51, DK-2200 København N, Denmark; Danish Research Centre for Magnetic Resonance, Copenhagen University Hospital Hvidovre, Kettegård Allé 30, DK-2650 Hvidovre, Denmark
2 Institute of Exercise and Sport Sciences, University of Copenhagen, Nørre Allé 51, DK-2200 København N, Denmark; Department of Medical Physiology, University of Copenhagen, Faculty of Health Sciences, Blegdamsvej 3, DK-2200 København N, Denmark
3 Danish Research Centre for Magnetic Resonance, Copenhagen University Hospital Hvidovre, Kettegård Allé 30, DK-2650 Hvidovre, Denmark

* To whom correspondence should be addressed.
Mark Schram Christensen, E-mail: markc{at}drcmr.dk


  Abstract

The objective of this study was to investigate brain areas involved in distinguishing sensory events caused by self-generated movements from similar sensory events caused by externally generated movements using functional magnetic resonance imaging. Subjects performed 4 types of movements: 1) self-generated voluntary movement with visual feedback, 2) externally generated movement with visual feedback, 3) self-generated voluntary movement without visual feedback, and 4) externally generated movement without visual feedback, this design. This factorial design makes it possible to study which brain areas are activated during self-generated ankle movements guided by visual feedback as compared with externally generated movements under similar visual and proprioceptive conditions. We found a distinct network, comprising the posterior parietal cortex and lateral cerebellar hemispheres, which showed increased activation during visually guided self-generated ankle movements. Furthermore, we found differential activation in the cerebellum depending on the different main effects, that is, whether movements were self- or externally generated regardless of visual feedback, presence or absence of visual feedback, and activation related to proprioceptive input.

Keywords: cerebellum; externally generated; posterior parietal cortex; self-generated.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.