The effect of stimulation frequency on transcranial evoked potentials.

IF 1.8 4区医学 Q4 NEUROSCIENCES

Translational Neuroscience Pub Date : 2022-08-05 eCollection Date: 2022-01-01 DOI:10.1515/tnsci-2022-0235

Giorgio Leodori, Lorenzo Rocchi, Marco Mancuso, Maria Ilenia De Bartolo, Viola Baione, Matteo Costanzo, Daniele Belvisi, Antonella Conte, Giovanni Defazio, Alfredo Berardelli

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引用次数: 7

Abstract

Introduction: Transcranial magnetic stimulation-evoked electroencephalography potentials (TEPs) have been used to study motor cortical excitability in healthy subjects and several neurological conditions. However, optimal recording parameters for TEPs are still debated. Stimulation rates could affect TEP amplitude due to plasticity effects, thus confounding the assessment of cortical excitability. We tested whether short interpulse intervals (IPIs) affect TEP amplitude.

Methods: We investigated possible changes in TEP amplitude and global mean field amplitude (GMFA) obtained with stimulation of the primary motor cortex at IPIs of 1.1-1.4 s in a group of healthy subjects.

Results: We found no differences in TEP amplitude or GMFA between the first, second and last third of trials.

Discussion: Short IPIs do not affect TEP size and can be used without the risk of confounding effects due to short-term plasticity.

Abstract Image

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刺激频率对经颅诱发电位的影响。

简介:经颅磁刺激诱发脑电图电位(TEPs)已被用于研究健康受试者和几种神经系统疾病的运动皮质兴奋性。然而，tep的最佳记录参数仍然存在争议。由于可塑性的影响，刺激率可能影响TEP的振幅，从而混淆了皮质兴奋性的评估。我们测试了短脉冲间隔(IPIs)是否影响TEP的振幅。方法:对健康受试者在ipi为1.1 ~ 1.4 s时，刺激初级运动皮层获得的TEP振幅和全局平均场振幅(GMFA)可能发生的变化进行研究。结果:我们发现TEP振幅和GMFA在第一、第二和最后三分之一的试验中没有差异。讨论:短ipi不影响TEP的大小，可以使用，没有因短期可塑性而产生混淆效应的风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Translational Neuroscience NEUROSCIENCES-

CiteScore

3.00

自引率

4.80%

发文量

审稿时长

>12 weeks

期刊介绍： Translational Neuroscience provides a closer interaction between basic and clinical neuroscientists to expand understanding of brain structure, function and disease, and translate this knowledge into clinical applications and novel therapies of nervous system disorders.