dc.contributor.author |
Jordan, Harry T |
|
dc.contributor.author |
Stinear, Cathy M |
|
dc.coverage.spatial |
United States |
|
dc.date.accessioned |
2023-01-18T03:48:45Z |
|
dc.date.available |
2023-01-18T03:48:45Z |
|
dc.date.issued |
2018-12 |
|
dc.identifier.citation |
(2018). Journal of Neurophysiology, 120(6), 2858-2867. |
|
dc.identifier.issn |
0022-3077 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/62453 |
|
dc.description.abstract |
Bilateral priming is a rehabilitation adjuvant that can improve upper limb motor recovery poststroke. It uses a table-top device to couple the upper limbs together such that active flexion and extension of one wrist leads to passive movement of the opposite wrist in a mirror symmetric pattern. Bilateral priming increases corticomotor excitability (CME) in the primary motor cortex (M1) of the passively driven wrist; however, the neurophysiological mechanisms underlying this increase remain unclear. This study explored these mechanisms by using transcranial magnetic stimulation over the right M1 and recording motor-evoked potentials from the passively driven left extensor carpi radialis of healthy adults. Intracortical measures were recorded before and 5 and 35 min after a single 15-min session of priming. One-millisecond short-interval intracortical inhibition, long-interval intracortical inhibition, late cortical disinhibition (LCD), and intracortical facilitation were recorded with a posterior-anterior (PA) intracortical current, whereas CME and short-interval intracortical facilitation (SICF) were recorded with both PA and anterior-posterior (AP) currents. CME with PA stimulation was also recorded ~1 h postpriming. PA CME was elevated 35 min postpriming and remained elevated ~1 h postpriming. LCD decreased, and AP SICF increased at both 5 and 35 min postpriming. However, these changes in LCD and AP SICF are unlikely to be the cause of the increased PA CME because of the differing timelines of their effects and AP and PA currents activating separate interneuron circuits. These results suggest that bilateral priming does not increase CME through alterations of the intracortical circuits investigated here. NEW & NOTEWORTHY This is the first study to measure how bilateral priming modulates corticomotor excitability with posterior-anterior and anterior-posterior intracortical currents, 1-ms short-interval intracortical inhibition, late cortical disinhibition, intracortical facilitation, and short-interval intracortical facilitation. We found corticomotor excitability with a posterior-anterior current increased by 35 min until ~1 h postpriming. Short-interval intracortical facilitation with an anterior-posterior current was greater for at least 35 min postpriming. This provides further insight into the neurophysiological mechanisms underlying bilateral priming. |
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dc.format.medium |
Print-Electronic |
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dc.language |
eng |
|
dc.publisher |
American Physiological Society |
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dc.relation.ispartofseries |
Journal of neurophysiology |
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dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
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dc.subject |
Upper Extremity |
|
dc.subject |
Muscle, Skeletal |
|
dc.subject |
Motor Cortex |
|
dc.subject |
Humans |
|
dc.subject |
Evoked Potentials, Motor |
|
dc.subject |
Adult |
|
dc.subject |
Female |
|
dc.subject |
Male |
|
dc.subject |
Functional Laterality |
|
dc.subject |
Repetition Priming |
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dc.subject |
Neurological Rehabilitation |
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dc.subject |
bilateral priming |
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dc.subject |
facilitation |
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dc.subject |
inhibition |
|
dc.subject |
transcranial magnetic stimulation |
|
dc.subject |
Behavioral and Social Science |
|
dc.subject |
Clinical Research |
|
dc.subject |
Basic Behavioral and Social Science |
|
dc.subject |
Neurosciences |
|
dc.subject |
Science & Technology |
|
dc.subject |
Life Sciences & Biomedicine |
|
dc.subject |
Physiology |
|
dc.subject |
Neurosciences & Neurology |
|
dc.subject |
INTERVAL INTRACORTICAL FACILITATION |
|
dc.subject |
I-WAVE INTERACTION |
|
dc.subject |
LATE CORTICAL DISINHIBITION |
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dc.subject |
TMS |
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dc.subject |
STROKE |
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dc.subject |
EXCITABILITY |
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dc.subject |
MECHANISMS |
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dc.subject |
MUSCLE |
|
dc.subject |
1109 Neurosciences |
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dc.subject |
Clinical |
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dc.subject |
Clinical Medicine and Science |
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dc.subject |
11 Medical and Health Sciences |
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dc.subject |
17 Psychology and Cognitive Sciences |
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dc.title |
Effects of bilateral priming on motor cortex function in healthy adults. |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.1152/jn.00472.2018 |
|
pubs.issue |
6 |
|
pubs.begin-page |
2858 |
|
pubs.volume |
120 |
|
dc.date.updated |
2022-12-15T03:55:13Z |
|
dc.rights.holder |
Copyright: The authors |
en |
dc.identifier.pmid |
30281376 (pubmed) |
|
pubs.author-url |
https://www.ncbi.nlm.nih.gov/pubmed/30281376 |
|
pubs.end-page |
2867 |
|
pubs.publication-status |
Published |
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dc.rights.accessrights |
http://purl.org/eprint/accessRights/RetrictedAccess |
en |
pubs.subtype |
Research Support, Non-U.S. Gov't |
|
pubs.subtype |
Journal Article |
|
pubs.elements-id |
870417 |
|
pubs.org-id |
Medical and Health Sciences |
|
pubs.org-id |
School of Medicine |
|
pubs.org-id |
Medicine Department |
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dc.identifier.eissn |
1522-1598 |
|
pubs.record-created-at-source-date |
2022-12-15 |
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pubs.online-publication-date |
2018-10-03 |
|