Motor Evoked Potential by Magnetic Stimulation

磁刺激运动诱发电位

• 批准号: 63480330
• 负责人: KODAMA Namio
• 金额: $ 2.69万
• 依托单位: Fukushima Medical University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63480330/
• 关键词: Magnetic stimulation; Motor evoked potential

Motor evoked potential (MEP) has been recorded by high voltage electrical stimulation. Magnetic stimulation, in contrast with electrical stimulation, is non invasive. But distribution of magnetic force generated by the coil has not been studied accurately.And then in dogs, MEP by transcranial magnetic stimulation is recorded from brachial muscle and epidural space at cervical level.Next, as clinical study, amplitude and latency of MEP recorded from the bilateral thiner muscle are investigated in the patients with hemiparesis.The following results are obtained.1 : Magnetic induction flux density is greater at the edge of the coil than center. 2 : In anesthesied dogs, MEP is recorded from the brachial muscle, which latency is about 6-8msec. And MEP recorded from epidural space consist of two negative peaks corresponding to the electrical stimulation. 3 : In the patients with hemiplegia, MEP is not recorded. In the patients with hemiparesis, MEP has a tendency to be low amplitude and prolongation of latency, but it is not possible to evaluate motor function precisely.Transcranial magnetic stimulation is non invasive. MEP by magnetic stimulation will be useful for investigation of motor function.

高压电刺激记录了电动机诱发电位（MEP）。与电刺激相反，磁刺激是无侵入性的。但是，尚未准确研究线圈产生的磁力的分布。然后，在狗中，通过经颅磁刺激记录了颈椎水平的臂肌和硬膜外空间的MEP。临床研究，临床研究，较薄的较薄的较薄的频率，以下是在较大的较薄的范围内记录的MEP。线圈比中心。 2：在麻醉的狗中，MEP是从肱骨肌肉中记录的，肱肌的潜伏期约为6-8msec。在硬膜外空间中记录的MEP由两个对应于电刺激的负峰组成。 3：在偏瘫患者中，未记录MEP。在偏瘫患者中，MEP具有低振幅和延迟延长的趋势，但是不可能精确地评估运动功能。传输磁刺激是无侵入性的。通过磁刺激的MEP将有助于研究运动功能。