The excitation site of the accessory nerve to the magnetic stimulation - The relationship between the orientation of the magnetic field and the excitation site

Atsuhiro Kojima, Takayuki Ohira, Masahito Kobayashi, Masato Ochiai, Takeshi Kawase

研究成果: Article

抜粋

Objective: The relationship between the accessory nerve excitation site and the magnetic field direction was investigated to prove whether the cranial nerve excitation site to the transcranial magnetic stimulation is constant or not. Methods: Compound muscle action potentials (CMAPs) elicited by the transcranial magnetic stimulation were recorded from the trapezius muscles of 7 adult cats. The waveforms of CMAPs were detected before craniectomy, after craniectomy, and after cutting the accessory nerve at the C1, at the jugular tubercle, and at the jugular foramen. The optimal orientation was determined by rotating the coil clockwise in increments of 22.5°from the rostral direction. Results: The accessory nerve was stimulated by the magnetic stimulation at the C1, at the jugular tubercle or at the jubular foramen, and these excitation sites varied with coil orientation. The average angles of the optimal orientation of the magnetic coil were 77.1°for C1, 122.1263.6°for the jugular tubercle, and 308.6- 32.1°for the jugular foramen. Conclusions: The accessory nerve excitation site varied with the orientation of the magnetic coil. This study suggested the possibility of a variety of the cranial nerve excitation sites to the transcranial magnetic stimulation.

元の言語English
ページ(範囲)1100-1105
ページ数6
ジャーナルClinical Neurophysiology
110
発行部数6
DOI
出版物ステータスPublished - 1999 6 1

ASJC Scopus subject areas

  • Sensory Systems
  • Neurology
  • Clinical Neurology
  • Physiology (medical)

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