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Influence of motor imagination on cortical activation during functional electrical stimulation.

Reynolds C, Osuagwu BA, Vuckovic A - Clin Neurophysiol (2014)

Bottom Line: 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.When MI only preceded FES it resulted in a weaker beta ERD during FES than when FES was activated automatically.The study is relevant for neurorehabilitation of movement.

View Article: PubMed Central - PubMed

Affiliation: Biomedical Engineering, School of Engineering, University of Glasgow, James Watt Building (South), G12 8QQ Glasgow, UK. Electronic address: clare_t_reynolds@hotmail.com.

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Related in: MedlinePlus

Experimental setup for the on-line experiment. Participants sit in front of a screen with forearms in front of him/her. Bipolar electrodes for FES are attached to participants′ right forearm. A warning sign (a cross) in the middle of the screen instructs the participant to start MI of the right hand. A scale in the left upper corner is proportional to the control parameter of the BCI and moves to the left, towards 0 during MI. This setup was used for conditions 1 and 2.
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f0010: Experimental setup for the on-line experiment. Participants sit in front of a screen with forearms in front of him/her. Bipolar electrodes for FES are attached to participants′ right forearm. A warning sign (a cross) in the middle of the screen instructs the participant to start MI of the right hand. A scale in the left upper corner is proportional to the control parameter of the BCI and moves to the left, towards 0 during MI. This setup was used for conditions 1 and 2.

Mentions: The participants were instructed to imagine waving with their right hand with a frequency of about 0.5 Hz as soon as they saw the execution cue. A scale, providing a continuous on-line information about MI, was shown in the left upper corner of the screen (Fig. 2). It was explained to participants that the FES would be activated when the indicator of the scale reached zero. They were not specifically instructed to look at the indicator, and could choose to concentrate on either the scale or on their own hand while imagining moving their right hand. Therefore for conditions 1 and 2 the participants voluntarily activated the FES using kinaesthetic MI.


Influence of motor imagination on cortical activation during functional electrical stimulation.

Reynolds C, Osuagwu BA, Vuckovic A - Clin Neurophysiol (2014)

Experimental setup for the on-line experiment. Participants sit in front of a screen with forearms in front of him/her. Bipolar electrodes for FES are attached to participants′ right forearm. A warning sign (a cross) in the middle of the screen instructs the participant to start MI of the right hand. A scale in the left upper corner is proportional to the control parameter of the BCI and moves to the left, towards 0 during MI. This setup was used for conditions 1 and 2.
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493293&req=5

f0010: Experimental setup for the on-line experiment. Participants sit in front of a screen with forearms in front of him/her. Bipolar electrodes for FES are attached to participants′ right forearm. A warning sign (a cross) in the middle of the screen instructs the participant to start MI of the right hand. A scale in the left upper corner is proportional to the control parameter of the BCI and moves to the left, towards 0 during MI. This setup was used for conditions 1 and 2.
Mentions: The participants were instructed to imagine waving with their right hand with a frequency of about 0.5 Hz as soon as they saw the execution cue. A scale, providing a continuous on-line information about MI, was shown in the left upper corner of the screen (Fig. 2). It was explained to participants that the FES would be activated when the indicator of the scale reached zero. They were not specifically instructed to look at the indicator, and could choose to concentrate on either the scale or on their own hand while imagining moving their right hand. Therefore for conditions 1 and 2 the participants voluntarily activated the FES using kinaesthetic MI.

Bottom Line: 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.When MI only preceded FES it resulted in a weaker beta ERD during FES than when FES was activated automatically.The study is relevant for neurorehabilitation of movement.

View Article: PubMed Central - PubMed

Affiliation: Biomedical Engineering, School of Engineering, University of Glasgow, James Watt Building (South), G12 8QQ Glasgow, UK. Electronic address: clare_t_reynolds@hotmail.com.

Show MeSH
Related in: MedlinePlus