Inter-individual variation in the efficient stimulation site for magnetic brainstem stimulation

被引：12
|
作者：
Shirota, Yuichiro [1 ]
Hanajima, Ritsuko
Hamada, Masashi
Terao, Yasuo
Matsumoto, Hideyuki
Tsutsumi, Ryosuke
Ohminami, Shinya
Furubayashi, Toshiaki [2 ,3 ]
Ugawa, Yoshikazu [2 ]
机构：
[1] Univ Tokyo, Grad Sch Med, Dept Neurol, Div Neurosci,Bunkyo Ku, Tokyo 1138655, Japan
[2] Fukushima Med Univ, Sch Med, Dept Neurol, Fukushima, Japan
[3] Tohoku Bunka Gakuen Univ, Fac Med Sci & Welf, Dept Rehabil, Sendai, Miyagi, Japan
来源：
CLINICAL NEUROPHYSIOLOGY | 2011年 / 122卷 / 10期
关键词：
Brainstem stimulation; Pyramidal tract; Inter-individual variation; Transcranial magnetic stimulation (TMS); FORAMEN MAGNUM LEVEL; CORTICOSPINAL TRACT; MOTOR CORTEX; CEREBELLUM; HUMANS; EXCITABILITY; PATHWAYS; UTILITY;
D O I：
10.1016/j.clinph.2011.03.025
中图分类号：
R74 [神经病学与精神病学];
学科分类号：
摘要：
Objective: To investigate inter-individual variation in the efficiency of magnetic brainstem stimulation (BST) with regard to the stimulation site. Methods: We studied 31 healthy subjects, using a right hand muscle as a recording site. Three stimulation sites were compared: BST over the inion (inion BST), and BST over the midpoint between the inion and the right (ipsilateral BST) or left (contralateral BST) mastoid process. Five suprathreshold BSTs were performed for each stimulation site using the same stimulation intensity. The mean peak-to-peak amplitudes of motor evoked potential (MEP) were compared. The active motor threshold (AMT) and onset latency for inion BST and ipsilateral BST were also measured and compared. Results: Contralateral BST did not evoke discernible MEPs in most subjects. In 21 subjects (67.7%), ipsilateral BST elicited larger MEPs than inion BST did, and AMT for ipsilateral BST was lower than or equal to the AMT for inion BST in all subjects. Ipsilateral BST elicited shorter latency in such subjects. Conclusions: The suitable stimulation site for BST differed among subjects. About two-thirds showed larger MEP to ipsilateral BST. Significance: These findings might help us to find an efficient stimulation site for BST in each subject. (C) 2011 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码：2044 / 2048
页数：5
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