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Differential changes in early somatosensory evoked potentials between the dominant and non-dominant hand, following a novel motor tracing task

Zabihhosseinian, M, Gilley, R, Andrew, D, Murphy, B and Yielder, Paul 2020, Differential changes in early somatosensory evoked potentials between the dominant and non-dominant hand, following a novel motor tracing task, Brain Sciences, vol. 10, no. 5, pp. 290-290, doi: 10.3390/brainsci10050290.

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Title Differential changes in early somatosensory evoked potentials between the dominant and non-dominant hand, following a novel motor tracing task
Author(s) Zabihhosseinian, M
Gilley, R
Andrew, D
Murphy, B
Yielder, Paul
Journal name Brain Sciences
Volume number 10
Issue number 5
Start page 290
End page 290
Total pages 14
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2020-05-01
ISSN 2076-3425
Keyword(s) somatosensory evoked potentials
motor acquisition
sensorimotor integration
dominant hand
non-dominant hand
Summary During training in a novel dynamic environment, the non-dominant upper limb favors feedback control, whereas the dominant limb favors feedforward mechanisms. Early somatosensory evoked potentials (SEPs) offer a means to explore differences in cortical regions involved in sensorimotor integration (SMI). This study sought to compare differences in SMI between the right (Dom) and left (Non-Dom) hand in healthy right-handed participants. SEPs were recorded in response to median nerve stimulation, at baseline and post, a motor skill acquisition-tracing task. One group (n = 12) trained with their Dom hand and the other group (n = 12), with their Non-Dom hand. The Non-Dom hand was significantly more accurate at baseline (p < 0.0001) and both groups improved with time (p < 0.0001), for task accuracy, with no significant interaction effect between groups for both post-acquisition and retention. There were significant group interactions for the N24 (p < 0.001) and the N30 (p < 0.0001) SEP peaks. Post motor acquisition, the Dom hand had a 28.9% decrease in the N24 and a 23.8% increase in the N30, with opposite directional changes for the Non-Dom hand; 22.04% increase in N24 and 24% decrease in the N30. These SEP changes reveal differences in early SMI between Dom and Non-Dom hands in response to motor acquisition, providing objective, temporally sensitive measures of differences in neural mechanisms between the limbs.
Language eng
DOI 10.3390/brainsci10050290
Indigenous content off
Field of Research 1109 Neurosciences
1701 Psychology
1702 Cognitive Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30139578

Document type: Journal Article
Collections: Faculty of Health
School of Medicine
Open Access Collection
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.