Topography of spatially enhanced human short-latency somatosensory evoked potentials

P. M. Rossini, F. Babiloni, C. Babiloni, A. Ambrosini, P. Onorati, A. Urbano

Research output: Contribution to journalArticlepeer-review

Abstract

In the present study modern high resolution electroencephalography (EEG) was used to spatially enhance human median nerve short-latency somatosensory evoked potentials (SEPs). It was shown that the spatially enhanced N30 consisted of two frontal subcomponents, one located in the frontal-lateral area of the scalp, the other located in the frontal-mesial area. Both of these subcomponents were most reduced in amplitude (or disappeared) during concomitant hand movement ipsilateral to the stimulus, but were differentially influenced by executed contralateral movement and imagined ipsilateral movement. These results support the hypothesis of an involvement of the frontal-mesial cortex (including the supplementary motor area) in the generation of the frontal N30.

Original languageEnglish
Pages (from-to)991-994
Number of pages4
JournalNeuroReport
Volume8
Issue number4
Publication statusPublished - 1997

Keywords

  • Frontal wave N30
  • High resolution EEG
  • Scalp topography
  • Somtosensory evoked potentials (SEPs)
  • Supplementary motor area (SMA)

ASJC Scopus subject areas

  • Neuroscience(all)

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