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Visual feedback-related changes in ipsilateral cortical excitability during unimanual movement: Implications for mirror therapy
Citation
Reissig, P and Garry, MI and Summers, JJ and Hinder, MR, Visual feedback-related changes in ipsilateral cortical excitability during unimanual movement: Implications for mirror therapy, Neuropsychological Rehabilitation, 24, (6) pp. 936-957. ISSN 1464-0694 (2014) [Refereed Article]
Copyright Statement
Copyright 2014 Taylor & Francis
DOI: doi:10.1080/09602011.2014.922889
Abstract
Provision of a mirror image of a hand undertaking a motor task (i.e., mirror therapy) elicits behavioural improvements in the inactive hand. A greater understanding of the neural mechanisms underpinning this phenomenon is required to maximise its potential for rehabilitation across the lifespan, e.g., following hemiparesis or unilateral weakness. Young and older participants performed unilateral finger abductions with no visual feedback, with feedback of the active or passive hands, or with a mirror image of the active hand. Transcranial magnetic stimulation was used to assess feedback-related changes in two neurophysiological measures thought to be involved in inter-manual transfer of skill, namely corticospinal excitability (CSE) and intracortical inhibition (SICI) in the passive hemisphere. Task performance led to CSE increases, accompanied by decreases of SICI, in all visual feedback conditions relative to rest. However, the changes due to mirror feedback were not significantly different to those observed in the other (more standard) visual conditions. Accordingly, the unimanual motor action itself, rather than modifications in visual feedback, appears more instrumental in driving changes in CSE and SICI. Therefore, changes in CSE and SICI are unlikely to underpin the behavioural benefits of mirror therapy. We discuss implications for rehabilitation and directions of future research.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | use of mirror feedback in clinical rehabiliation |
| Research Division: | Medical and Health Sciences |
| Research Group: | Human Movement and Sports Science |
| Research Field: | Motor Control |
| Objective Division: | Health |
| Objective Group: | Other Health |
| Objective Field: | Health not elsewhere classified |
| UTAS Author: | Reissig, P (Ms Paola Reissig) |
| UTAS Author: | Garry, MI (Dr Michael Garry) |
| UTAS Author: | Summers, JJ (Professor Jeffery Summers) |
| UTAS Author: | Hinder, MR (Dr Mark Hinder) |
| ID Code: | 92201 |
| Year Published: | 2014 |
| Funding Support: | Australian Research Council (DE120100729) |
| Web of Science® Times Cited: | 11 |
| Deposited By: | Psychology |
| Deposited On: | 2014-06-10 |
| Last Modified: | 2017-11-05 |
| Downloads: | 0 |
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