Abstract
Extracranial magnetoencephalographic activity was separately recorded (25 channels) from bilateral primary sensorimotor cortex (M1-S1) of normal right-handers during unilateral finger movements. Standard dipole analysis indicated only a contralateral M1-S1 source for first movement-evoked field (MEF1) peaking at about 115 ms after electromyographic onset. However, the subtraction of the magnetic field generated by this source from the recorded magnetic field disclosed a low-amplitude ipsilateral central-parietal MEFI that was explained by an ipsilateral M1-S1 source.
Original language | English |
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Pages (from-to) | 234-236 |
Number of pages | 3 |
Journal | Brain Research |
Volume | 827 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - May 8 1999 |
Keywords
- Finger movement
- Hemispheric functional asymmetry
- Human cerebral cortex
- Magnetoencephalography
- Primary sensorimotor cortex (M1-S1)
ASJC Scopus subject areas
- Neuroscience(all)