Event-related beta EEG changes during wrist movements induced by functional electrical stimulation of forearm muscles in man

Event-related beta electroencephalographic (EEG) changes were studied during wrist movements induced by functional electrical stimulation (FES) of the appropriate forearm muscles in healthy volunteers. Active and passive hand movements were investigated as control conditions. Significant EEG changes...

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Bibliographic Details
Published in:Neuroscience letters 2003-04, Vol.340 (2), p.143-147
Main Authors: Müller, G.R., Neuper, C., Rupp, R., Keinrath, C., Gerner, H.J., Pfurtscheller, G.
Format: Article
Language:English
Subjects:
Adult
Beta oscillations
Beta Rhythm - methods
Biological and medical sciences
Central nervous system
Electric Stimulation - methods
Electroencephalogram
Electroencephalography - methods
Electrophysiology
Event-related desynchronization
Event-related synchronization
Evoked Potentials - physiology
Female
Forearm - physiology
Functional electrical stimulation
Fundamental and applied biological sciences. Psychology
Humans
Male
Movement - physiology
Muscle, Skeletal - physiology
Sensorimotor areas
Vertebrates: nervous system and sense organs
Wrist - physiology
Wrist movement
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Summary:Event-related beta electroencephalographic (EEG) changes were studied during wrist movements induced by functional electrical stimulation (FES) of the appropriate forearm muscles in healthy volunteers. Active and passive hand movements were investigated as control conditions. Significant EEG changes with respect to a pre-movement period were analyzed by calculating time-frequency maps of event-related (de-)synchronization (ERD/ERS) for 32 EEG channels recorded from sensorimotor and premotor areas. Immediately after the beginning of the FES movement, a prominent ERD was found, followed by a beta ERS similar to that observed after active or passive wrist movements. Both changes were maximal over the contralateral primary hand area. The main difference between active and stimulation-induced movements was that in the latter case no ERD was detectable prior to movement-onset. These findings suggest that the sensorimotor processing during FES involves some of the processes which are also involved in voluntary hand movements.
ISSN:0304-3940
1872-7972
DOI:10.1016/S0304-3940(03)00019-3