Analysis of the source in the sensory area during self-paced finger movements

M. Niimi, T. Ohira, M. Ochiai, Y. Kaneko, T. Kawase

Research output: Contribution to journalArticlepeer-review


The movement-related cortical fields (MRCFs) accompanying index finger movements and somatosensory-evoked fields (SEFs) were investigated in 10 subjects. Movement-evoked field (MEFI) was observed in all of the subjects. The dipole of MEFI was directed posteriorly and was located in the postcentral gyrus of the hemisphere contralateral to the movement. The SEFs showed three major components: N20m, P30m and P60m. The direction of the MEFI dipole was similar to that of P30m and P60m. Based on the distribution of the dipole locations, MEFI was similar to P60m and different from P30m. The mean location of the MEFI dipole was more posterior and medial than the dipole position of P30m and P60m. It suggests that MEFI was generated by the higher sensory area.

Original languageEnglish
Pages (from-to)473-478
Number of pages6
JournalInternational Congress Series
Issue numberC
Publication statusPublished - 2002 Apr 1


  • Magnetoencephalography
  • Motor-evoked field
  • Movement-related cortical field
  • Somatosensory-evoked field

ASJC Scopus subject areas

  • General Medicine


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