Spatiotemporal patterns of beta desynchronization and gamma synchronization in corticographic data during self-paced movement

Clin Neurophysiol. 2003 Jul;114(7):1226-36. doi: 10.1016/s1388-2457(03)00067-1.

Abstract

Objective: To study the spatiotemporal pattern of event-related desynchronization (ERD) and event-related synchronization (ERS) in electrocorticographic (ECoG) data with closely spaced electrodes.

Methods: Four patients with epilepsy performed self-paced hand movements. The ERD/ERS was quantified and displayed in the form of time-frequency maps.

Results: In all subjects, a significant beta ERD with embedded gamma ERS was found.

Conclusions: Self-paced movement is accompanied not only by a relatively widespread mu and beta ERD, but also by a more focused gamma ERS in the 60-90 Hz frequency band.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Beta Rhythm / methods*
  • Brain Mapping
  • Cerebral Cortex / physiopathology
  • Cortical Synchronization / methods*
  • Electrodes
  • Evoked Potentials / physiology*
  • Female
  • Hand / physiopathology*
  • Humans
  • Male
  • Movement / physiology*
  • Physical Stimulation
  • Seizures / physiopathology*
  • Time Factors