Motor timing and motor sequencing contribute differently to the preparation for voluntary movement

Bortoletto, Marta and Cunnington, Ross (2010) Motor timing and motor sequencing contribute differently to the preparation for voluntary movement. Neuroimage, 49 4: 3338-3348. doi:10.1016/j.neuroimage.2009.11.048


Author Bortoletto, Marta
Cunnington, Ross
Title Motor timing and motor sequencing contribute differently to the preparation for voluntary movement
Journal name Neuroimage   Check publisher's open access policy
ISSN 1053-8119
1095-9572
Publication date 2010-02-15
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.neuroimage.2009.11.048
Open Access Status Not yet assessed
Volume 49
Issue 4
Start page 3338
End page 3348
Total pages 11
Editor J. C. Mazziotta
R. S. J. Frackowiak
K. J. Friston
Place of publication London, UK
Publisher Elsevier
Language eng
Subject C1
170205 Neurocognitive Patterns and Neural Networks
970117 Expanding Knowledge in Psychology and Cognitive Sciences
Abstract Two crucial processes preceding voluntary action are determining the time for movement initiation and planning of the specific sequence of motor output. In this study we aimed to differentiate the neural activity related to motor timing and motor sequencing and to examine over what time periods they contribute to premovement activity during the readiness for voluntary action. Eighteen participants performed selfinitiated voluntary finger movements in a readiness potential paradigm, both during EEG measurement and during fMRI. The finger movement task involved three conditions: (1) simple repetitive sequences; (2) increased demand on the sequencing of movement order; and (3)increased demand on the timing of movement initiation. Functional MRI and 64 channels EEG were conducted in two separate sessions. Motor timing and motor sequencing were found to involve different neural processes occurring at different times prior to movement initiation. Motor timing involved greater activation in lateral prefrontal regions over the earliest part of premovement activity, from 1200 ms before movement onset. Motor sequencing involved greater activation of dorsal premotor and parietal areas and was reflected in central and parietal scalp regions only over the later part of premovement activity, within 600 ms of movement onset. We suggest that different neural processes contribute to different aspects of the intended action over different time periods during the preparation for movement, and it is the coordinated activity of these multiple regions that is represented in premovement activity during the readiness for voluntary action.
Keyword Movement-related potentials
fMRI
Action preparation
Motor timing
Motor sequencing
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Although this article was not published in print until 15 February 2010 it was available online from 27 November 2009.

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Psychology Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 29 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 14 Feb 2010, 10:00:57 EST