Post-movement beta synchronization. A correlate of an idling motor area?
Post-movement beta (around 20 Hz) synchronization was investigated in 2 experiments with self-paced finger extension and flexion and externally paced wrist movement. The electrodes were fixed over the sensorimotor area in distances of 2.5 cm. It was found that after a brisk finger movement the desynchronized beta rhythm displayed a fast recovery and a short-lasting synchronization within 1 sec. This post-movement beta synchronization was maximal over the contralateral hemisphere and localized slightly more anterior to the maximal desynchronization of the hand area mu rhythm. The post-movement beta synchronization is interpreted as a correlate of "idling" motor cortex neurons.
Pfurtscheller
G
G
Ludwig Boltzmann Institute of Medical Informatics and Neuroinformatics, University of Technology, Graz, Austria.
Stancák
A
A
Neuper
C
C
D000328:Adult; D001931:Brain Mapping; D004569:Electroencephalography; D005260:Female; D005385:Fingers / Q000294:innervation* / Q000502:physiology; D006801:Humans; D008297:Male; D009044:Motor Cortex / Q000502:physiology; D009068:Movement / Q000502:physiology*; D014953:Wrist / Q000294:innervation* / Q000502:physiology