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

G Pfurtscheller; B Graimann; J E Huggins; S P Levine; L A Schuh

doi:10.1016/s1388-2457(03)00067-1

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.

Authors

G Pfurtscheller¹, B Graimann, J E Huggins, S P Levine, L A Schuh

Affiliation

¹ Department of Medical Informatics, Institute of Biomedical Engineering, University of Technology Graz, Inffeldgasse 16a/II, A-8010 Graz, Austria. pfurtscheller@tugraz.at

PMID: 12842719
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

Abstract

Publication types

MeSH terms

Grants and funding