50 例健康受试者中，眼轮匝肌受刺激时的同心针颤搐。

Concentric needle jitter on stimulated Orbicularis Oculi in 50 healthy subjects.

机构信息

Faculdade de Medicina de São José do Rio Preto (FAMERP), Laboratório de Investigação Neuromuscular, São Paulo, Brazil.

Department of Clinical Neurophysiology, Institute of Neurosciences, Uppsala University, Uppsala, Sweden.

出版信息

Clin Neurophysiol. 2011 Mar;122(3):617-622. doi: 10.1016/j.clinph.2010.07.012. Epub 2010 Aug 12.

DOI:10.1016/j.clinph.2010.07.012

PMID:20708431

Abstract

OBJECTIVES

The aim of this study was to estimate the jitter parameters in healthy controls in stimulated Orbicularis Oculi (OOc) muscle using concentric needle electrode (CNE).

METHODS

Fifty healthy subjects, 13 males and 37 females (21-56 years, mean age of 38±9.2 years) were studied. The zygomatic branch of facial nerve was stimulated with a bar electrode. Jitter was expressed as the mean consecutive difference (MCD). Filter settings 1000 Hz-10 kHz.

RESULTS

The mean MCD from individual studies (n=50, Gaussian distribution) was 21.5±1.99 μs (median=21 μs), ranging from 17.8 to 26 μs (upper limit, 97.5%, 25.5 μs). The mean and median MCD from all potentials (n=1500, non-Gaussian distribution) were 21.6 and 21 μs, ranging from 7.1 to 39 μs (upper limit, 97.5%, 33.4 μs).

CONCLUSIONS

Suggested practical limits in the OOc for mean MCD was 26 μs and for outliers 34 μs.

SIGNIFICANCE

Stimulation jitter recordings with CNE could be used in practice but borderline findings should be judged with great caution until larger database obtained with uniform setting available.

摘要

目的

本研究旨在使用同心针电极（CNE）评估健康对照者的眼轮匝肌（OOc）刺激时的微颤参数。

方法

研究了 50 名健康受试者，13 名男性和 37 名女性（21-56 岁，平均年龄 38±9.2 岁）。使用棒电极刺激面神经颧支。微颤表示为连续差值的平均值（MCD）。滤波器设置为 1000 Hz-10 kHz。

结果

个体研究的平均 MCD（n=50，高斯分布）为 21.5±1.99 μs（中位数=21 μs），范围为 17.8-26 μs（上限，97.5%，25.5 μs）。所有电位（n=1500，非高斯分布）的平均和中位数 MCD 分别为 21.6 和 21 μs，范围为 7.1-39 μs（上限，97.5%，33.4 μs）。