Propagation of EEG activity during finger movement and its imagination

• Authors: R. Kus , J.S. Ginter , K.J. Blinowska
• Languages of publication: EN

Abstracts

EN

We investigated the pattern of EEG activity propagation in the beta and gamma band during a finger movement experiment and imagination of that task. The data were analyzed by means of a short-time directed transfer function (SDTF) based on a multivariate autoregressive model. The signals from the right (or left) hemisphere were processed simultaneously (not pairwise), which is crucial for obtaining a correct picture of EEG activity transmissions. The pattern of propagation in the beta band involved for both tasks a decrease of the propagation from the motor areas during the execution of the movement ? less pronounced in the case of imagination. The performance of the motion was mainly connected with a short outburst of gamma activity from the hand sensorimotor areas. In case of imagination the gamma outflow lasted longer and concerned larger brain areas.

Keywords

EN

BETA ACTIVITY; EEG; GAMMA ACTIVITY; MOTOR TASK; MOVEMENT IMAGERY; PROPAGATION

Discipline

• EXPERIMENTAL_BIOLOGY_&_MEDICINE: EXPERIMENTAL BIOLOGY & MEDICINE

• Publisher: Marceli Nencki Institute of Experimental Biology, Polish Academy of Sciences
• Journal: Acta Neurobiologiae Experimentalis
• Year: 2006
• Volume: 66
• Issue: 3
• Pages: 195-206

Contributors

author

R. Kus

author

J.S. Ginter

author

K.J. Blinowska

• Document Type: ARTICLE
• Publication order reference: Rafal Kus, Department of Biomedical Physics, Institute of Experimental Physics, Warsaw University, ul. Hoza 69, 00-682 Warsaw, Poland