Movement-related EEG desynchronization in dystonia

L. Leocani, G. Galardi, G. Magnani, M. A. Volonté, S. Amadio, S. Mennea, G. Comi

Research output: Contribution to journalArticle

Abstract

Event-related desynchronization (ERD) of sensorimotor rhythms in the alpha and beta bands is considered an indicator of cortical activation during motor preparation and execution. Event-related synchronization (ERS) of the beta rhythms, occurring after movement termination, is considered a correlate of corticospinal inhibition. We evaluated the ERD/ERS pattern to self-paced voluntary movement, using 29 channel EEG in a group of 9 dystonic patients (5 f, 4 m; age 36.8 ± 8.5 years) (4 focal, 2 multifocal, 1 hemidystonia, 2 writer's cramp). Data were compared with a group of normal subjects of similar age. Sensorimotor ERD during movement preparation and execution was similar in the two groups, while post-movement beta ERS was reduced in dystonic patients compared to normal subjects. These results are consistent with the hypothesis of a reduced efficiency of inhibitory circuits in dystonia.

Original languageEnglish
JournalNeurological Sciences
Volume21
Issue number4 SUPPL.
Publication statusPublished - 2000

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Neurology

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    Leocani, L., Galardi, G., Magnani, G., Volonté, M. A., Amadio, S., Mennea, S., & Comi, G. (2000). Movement-related EEG desynchronization in dystonia. Neurological Sciences, 21(4 SUPPL.).