Premovement activity of the pre-supplementary motor area and the readiness for action: Studies of time-resolved event-related functional MRI

Cunnington, Ross, Windischberger, Christian and Moser, Ewald (2005) Premovement activity of the pre-supplementary motor area and the readiness for action: Studies of time-resolved event-related functional MRI. Human Movement Science, 24 5-6: 644-656. doi:10.1016/j.humov.2005.10.001


Author Cunnington, Ross
Windischberger, Christian
Moser, Ewald
Title Premovement activity of the pre-supplementary motor area and the readiness for action: Studies of time-resolved event-related functional MRI
Journal name Human Movement Science   Check publisher's open access policy
ISSN 0167-9457
1872-7646
Publication date 2005-10-01
Year available 2005
Sub-type Article (original research)
DOI 10.1016/j.humov.2005.10.001
Open Access Status Not yet assessed
Volume 24
Issue 5-6
Start page 644
End page 656
Total pages 13
Editor Jan P. Piek
Natalie Gasson
Michael Garry
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Abstract The supplementary motor area (SMA) is thought to play in important role in the preparation and organisation of voluntary movement. It has long been known that cortical activity begins to increase up to 2 s prior to voluntary self-initiated movement. This increasing premovement activity measured in EEG is known as the Bereitschaftspotential or readiness potential. Modern functional brain imaging methods, using event-related and time-resolved functional MRI techniques, are beginning to reveal the role of the SMA, and in particular the more anterior pre-SMA, in premovement activity associated with the readiness for action. In this paper we review recent studies using event-related time-resolved fMRI methods to examine the time-course of activation changes within the SMA throughout the preparation, readiness and execution of action. These studies suggest that the preSMA plays a common role in encoding or representing actions prior to our own voluntary self-initiated movements, during motor imagery, and from the observation of others' actions. We suggest that the pre-SMA generates and encodes motor representations which are then maintained in readiness for action. (c) 2005 Elsevier B.V. All rights reserved.
Keyword Supplementary motor area
Movement preparation
Functional MRI
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Issue: Neural, Cognitive and Dynamic Perspectives of Motor Control

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Queensland Brain Institute Publications
 
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Created: Tue, 14 Aug 2007, 01:54:15 EST