par Bourguignon, Mathieu 
;De Tiege, Xavier ;Op De Beeck, Marc ;Pirotte, Benoît ;Van Bogaert, Patrick ;Goldman, Serge ;Hari, Riitta;Jousmaki, Veikko
Référence NeuroImage, 55, 4, page (1475-1479)
Publication Publié, 2011-04
;De Tiege, Xavier ;Op De Beeck, Marc ;Pirotte, Benoît ;Van Bogaert, Patrick ;Goldman, Serge ;Hari, Riitta;Jousmaki, Veikko Référence NeuroImage, 55, 4, page (1475-1479)
Publication Publié, 2011-04
Article révisé par les pairs
| Résumé : | We present a novel method, corticokinematic coherence (CKC), for functional mapping of the motor cortex by computing coherence between cortical magnetoencephalographic (MEG) signals and the kinematics of voluntary movements. Ten subjects performed self-paced flexion-extensions of the right-hand fingers at about 3 Hz, with a three-axis accelerometer attached to the index finger. Cross-correlogram and coherence spectra were computed between 306 MEG channels and the accelerometer signals. In all subjects, accelerometer and coherence spectra showed peaks around 3-5 Hz and 6-10 Hz, corresponding to the movement frequencies. The coherence was statistically significant (P<0.05) in all subjects, with sources at the hand area of the primary motor cortex contralateral to the movement. CKC appears to be a promising and robust method for reliable and convenient functional mapping of the human motor cortex. |
