Spatiotemporal patterns of beta desynchronization and gamma synchronization in corticographic data during self-paced movement
- PMID: 12842719
- DOI: 10.1016/s1388-2457(03)00067-1
Spatiotemporal patterns of beta desynchronization and gamma synchronization in corticographic data during self-paced movement
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.
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