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Post-movement beta oscillations studied with linear estimation

Post-movement beta oscillations studied with linear estimation

Authors: 
van Burik M.J., Knoesche T.R., Edlinger G., Neuper C., Pfurtscheller G. & Peters M.J.
Year: 
1998
Journal: 
Electroencephalography and Clinical Neurophysiology
Abstract: 

The application of surface laplacian and linear estimation methods to single trial EEG data was studied. EEG was recorded in 3 subjects during voluntary, self-paced extensions and flexions of the index finger. In each subject a post-movement beta synchronisation was found in specific frequency bands. The surface laplacian estimates were calculated using spherical splines and cortical current distributions were constructed using the linear estimation method. Both methods yield similar results and reveal a maximal event-related synchronisation over the left sensorimotor area approximately 500–750 ms after termination ofmovement.

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