The N18 component of the median nerve SEP is not reduced by vibration

Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section Pub Date : 1998-09-01 DOI:10.1016/S0168-5597(98)00010-0

G.M Manzano , N Negrão , J.A.M Nóbrega

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引用次数: 15

Abstract

Objective: To study the interference of mechanical vibration of the palm of the hand on the median nerve short-latency SEP components.

Methods: Electrically-elicited short-latency median nerve SEP were obtained before and during mechanical vibration (120 Hz) of the palm in two groups of normal individuals (6 in group I and 9 in group II). The amplitude of the different components was compared between the two conditions through non-parametric statistical tests.

Results: A significant reduction in the amplitude of the N9, P13/14 and N20 components was detected, however no overall significant changes were detected for the N18 component.

Conclusions: Vibration interference reduced all studied components except the N18, these findings are interpreted as supporting evidence for the proposed association between the N18 component and the inhibitory activities elicited in the dorsal column nuclei.

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正中神经SEP的N18分量不因振动而减小

目的:研究手掌机械振动对正中神经短潜伏期SEP成分的干扰。方法:对两组正常人(ⅰ组6人，ⅱ组9人)手掌机械振动(120 Hz)前和振动过程中电激发短潜伏期正中神经SEP进行测量，通过非参数统计检验比较两种情况下各分量的振幅。结果:N9、P13/14和N20成分的振幅显著降低，而N18成分的振幅总体上没有显著变化。结论:振动干扰降低了除N18外的所有研究成分，这些发现被解释为N18成分与背柱核引起的抑制活性之间存在关联的支持证据。

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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Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section

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