Bilateral neuromagnetic activation of human primary sensorimotor cortex in preparation and execution of unilateral voluntary finger movements

Claudio Babiloni, Filippo Carducci, Vittorio Pizzella, Iole Indovina, Gian Luca Romani, Paolo M. Rossini, Fabio Babiloni

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Pages (from-to)234-236
Number of pages3
JournalBrain Research
Volume827
Issue number1-2
DOIs
Publication statusPublished - May 8 1999

Keywords

  • Finger movement
  • Hemispheric functional asymmetry
  • Human cerebral cortex
  • Magnetoencephalography
  • Primary sensorimotor cortex (M1-S1)

ASJC Scopus subject areas

  • Neuroscience(all)

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