Three-dimensional human somatosensory evoked potentials

Vernon L. Towle, Richard Munson, Takayuki Ohira, Lou Ivanovic, John C. Witt, Jean Paul Spire

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Median nerve somatosensory evoked potentials were recorded from 30 normal adults using conventional scalp derivations and an orthogonal bipolar surface electrode montage. This allowed the determination of the spatial orientation of the hypothetical centrally located equivalent dipole derived from the evoked response recorded in 3-dimensional voltage space. The 3-dimensional voltage trajectory describing changes in equivalent dipole orientation and magnitude revealed 4 major apices between 5 and 25 msec, 3 of which corresponded to the traditional P14, N20 and P25 peaks. A fourth apex at 17 msec was not as evident in the conventional recordings and signaled a transition from a vertical P14-N18 generator process to a horizontal N20 generator process. The normal within- and between-subject variability of trajectory apices, segments and planes are described, along with the theoretical and practical implications of this recording technique.

本文言語English
ページ(範囲)336-347
ページ数12
ジャーナルElectroencephalography and Clinical Neurophysiology/ Evoked Potentials
71
5
DOI
出版ステータスPublished - 1988
外部発表はい

ASJC Scopus subject areas

  • 神経科学(全般)
  • 臨床神経学

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