M. Vanburik et al., POST-MOVEMENT BETA-OSCILLATIONS STUDIED WITH LINEAR-ESTIMATION, Electroencephalography and clinical neurophysiology, 106(3), 1998, pp. 195-198
The application of surface laplacian and linear estimation methods to
single trial EEG data was studied. EEG was recorded in 3 subjects duri
ng voluntary, self-paced extensions and flexions of the index finger.
In each subject a post-movement beta synchronisation was found in spec
ific frequency bands. The surface laplacian estimates were calculated
using spherical splines and cortical current distributions were constr
ucted using the linear estimation method. Both methods yield similar r
esults and reveal a maximal event-related synchronisation over the lef
t sensorimotor area approximately 500-750 ms after termination of move
ment. (C) 1998 Elsevier Science Ireland Ltd.