Reynolds, C., Osuagwu, B. A. and Vuckovic, A. (2015) Influence of motor imagination on cortical activation during functional electrical stimulation. Clinical Neurophysiology, 126(7), pp. 1360-1369. (doi: 10.1016/j.clinph.2014.10.007)
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Abstract
<b>Objective</b> Motor Imagination (MI) and Functional Electrical Stimulation (FES) can activate the sensory-motor cortexthrough efferent and afferent pathways respectively. Motor Imagination can be used as a control strategy to activate FES through a Brain-computer interface as the part of a rehabilitation therapy. It is believed that precise timing between the onset of MI and FES is important for strengthening the cortico-spinal pathways but it is not known whether prolonged MI during FES influences cortical response.<p></p> <b>Methods</b> Electroencephalogram was measured in ten able-bodied participants using MI strategy to control FES through a BCI system. Event related synchronisation/desynchronisation (ERS/ERD) over the sensory-motor cortex was analysed and compared in three paradigms: MI before FES, MI before and during FES and FES alone activated automatically.<p></p> <b>Results</b> MI practiced both before and during FES produced strongest ERD. When MI only preceded FES it resulted in a weaker beta ERD during FES than when FES was activated automatically. Following termination of FES, beta ERD returns to the baseline level within 0.5 s while alpha ERD took longer than 1 s.<p></p> <b>Conclusions</b> When MI and FES are combined for rehabilitation purposes it is recommended that MI is practiced throughout FES activation period.<p></p> <b>Significance</b> The study is relevant for neurorehabilitation of movement.<p></p>
| Item Type: | Articles |
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| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Vuckovic, Dr Aleksandra |
| Authors: | Reynolds, C., Osuagwu, B. A., and Vuckovic, A. |
| College/School: | College of Science and Engineering > School of Engineering > Biomedical Engineering |
| Journal Name: | Clinical Neurophysiology |
| Publisher: | Elsevier Ireland Ltd. |
| ISSN: | 1388-2457 |
| ISSN (Online): | 1872-8952 |
| Copyright Holders: | Copyright © 2014 International Federation of Clinical Neurophysiology |
| First Published: | First published in Clinical Neurophysiology 126(7):1360-1369 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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