Cortical inhibition on TMS-EEG: interstimulus interval effect on short-interval paired-pulse *
文献类型： 会议论文
第一作者： G. Mijancos-Martínez
作者： G. Mijancos-Martínez 1 ; A. Bachiller 1 ; I. Fernández-Linsenbarth 2 ; S. Romero 3 ; J. F. Alonso 3 ; V. Molina 4 ; M. A. Mana?as 3 ;
作者机构： 1.Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politèncicna de Catalunya (UPC), Barcelona, Spain|Institue of Research Sant Joan de Déu, Barcelona, Spain
2.Department of Psychiatry, Medicine Faculty, Universidad de Valladolid, Valladolid, Spain
3.Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politèncicna de Catalunya (UPC), Barcelona, Spain|CIBER of Bioengineering, Biomaterilas and Nanomedicine (CIBER-BBN), Madrid, Spain|Institue of Research Sant Joan de Déu, Barcelona, Spain
4.Department of Psychiatry, Medicine Faculty, Universidad de Valladolid, Valladolid, Spain|Institute of Castilla y León (INCYL), Universidad de Salamanca, Salamanca, Spain
关键词： Protocols;Transcranial magnetic stimulation;Mental disorders;Electroencephalography;Biology;Recording
会议名称： Annual International Conference of the IEEE Engineering in Medicine and Biology Society
主办单位：
页码： 1-4
摘要： In mental disorders, paired-pulse (PP) transcranial magnetic stimulation and electroencephalography (TMS-EEG) recordings usage is increasing to directly evaluate the cortical inhibition of motor and nonmotor regions. One of the most common measures to assess the inhibition is the short-interval cortical inhibition (SICI), which depends on the interstimulus interval (ISI). This measure has been widely used in the motor cortex. However, the number of studies that evaluate other nonmotor regions, such as the dorsolateral prefrontal cortex (DLPFC), are increasing and there is still little knowledge on how the ISI affects those areas.In this pilot study, six subjects underwent a SICI protocol over the DLPFC using ISI values of 2 and 4ms with the aim of comparing them. TMS-EEG signals for both ISIs were characterized regarding the amplitude and latency of the TMS-evoked potentials (TEP) P60 and N100. Whereas the variation of cortical inhibition between ISIs is almost significant for N100, with higher inhibition for an ISI of 2ms, for TEP P60 the variation was not appreciable. Findings are in accordance with the ones in the state-of-the-art obtained in the motor cortex and suggest that a greater inhibition is likely to be produced with an ISI of 2ms.Clinical relevance— This pilot study indicates that cortical inhibition might be better assessed when DLPFC is stimulated with an ISI of 2ms in the SICI protocol.
分类号： q81
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