Post-movement beta synchronization. A correlate of an idling motor area?

Electroencephalogr Clin Neurophysiol. 1996 Apr;98(4):281-93. doi: 10.1016/0013-4694(95)00258-8.


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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Brain Mapping*
  • Electroencephalography*
  • Female
  • Fingers / innervation*
  • Fingers / physiology
  • Humans
  • Male
  • Motor Cortex / physiology
  • Movement / physiology*
  • Wrist / innervation*
  • Wrist / physiology