Multimodal functional imaging of motor imagery using a novel paradigm

Burianova, Hana, Marstaller, Lars, Sowman, Paul, Tesan, Graciela, Rich, Anina N., Williams, Mark, Savage, Greg and Johnson, Blake W. (2013) Multimodal functional imaging of motor imagery using a novel paradigm. NeuroImage, 71 50-58. doi:10.1016/j.neuroimage.2013.01.001

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Author Burianova, Hana
Marstaller, Lars
Sowman, Paul
Tesan, Graciela
Rich, Anina N.
Williams, Mark
Savage, Greg
Johnson, Blake W.
Title Multimodal functional imaging of motor imagery using a novel paradigm
Journal name NeuroImage   Check publisher's open access policy
ISSN 1053-8119
Publication date 2013-05-01
Sub-type Article (original research)
DOI 10.1016/j.neuroimage.2013.01.001
Open Access Status File (Author Post-print)
Volume 71
Start page 50
End page 58
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2014
Language eng
Subject 2805 Cognitive Neuroscience
2808 Neurology
Abstract Neuroimaging studies have shown that the neural mechanisms of motor imagery (MI) overlap substantially with the mechanisms of motor execution (ME). Surprisingly, however, the role of several regions of the motor circuitry in MI remains controversial, a variability that may be due to differences in neuroimaging techniques, MI training, instruction types, or tasks used to evoke MI. The objectives of this study were twofold: (i) to design a novel task that reliably invokes MI, provides a reliable behavioral measure of MI performance, and is transferable across imaging modalities; and (ii) to measure the common and differential activations for MI and ME with functional magnetic resonance imaging (fMRI) and magnetoencephalography (MEG). We present a task in which it is difficult to give accurate responses without the use of either motor execution or motor imagery. The behavioral results demonstrate that participants performed similarly on the task when they imagined vs. executed movements and this performance did not change over time. The fMRI results show a spatial overlap of MI and ME in a number of motor and premotor areas, sensory cortices, cerebellum, inferior frontal gyrus, and ventrolateral thalamus. MI uniquely engaged bilateral occipital areas, left parahippocampus, and other temporal and frontal areas, whereas ME yielded unique activity in motor and sensory areas, cerebellum, precuneus, and putamen. The MEG results show a robust event-related beta band desynchronization in the proximity of primary motor and premotor cortices during both ME and MI. Together, these results further elucidate the neural circuitry of MI and show that our task robustly and reliably invokes motor imagery, and thus may prove useful for interrogating the functional status of the motor circuitry in patients with motor disorders.
Keyword fMRI
Motor execution
Motor imagery
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Centre for Advanced Imaging Publications
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