Modulation of neck muscle activity induced by intra-oral stimulation in humans
Modulation of neck muscle activity induced by intra-oral stimulation in humans
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DOI：
10.1016/j.clinph.2013.10.018
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发表时间：
2014-05-01
影响因子：
4.7
通讯作者：
Svensson, Peter
中科院分区：
文献类型：
--
作者：
Torisu, Tetsurou;Tanaka, Mihoko;Svensson, Peter
目的：目的：探讨口腔内电刺激牙齿周围组织对颈部肌肉活动的影响。方法：17名健康志愿者，在局部麻醉前、后，记录口腔内电刺激刺激刺激部位诱发的颈背部肌肉肌电图（EMG）反应。与基线水平相比，在麻醉前电刺激后观察到平均80%的背颈肌肌电活动抑制，潜伏期约为50 ms，并且在口内刺激部位麻醉后肌电活动抑制降低。视觉模拟评分法（VAS）评分的电刺激感知强度麻醉前为6.1 ± 0.4cm，麻醉后为1.5 ± 0.2cm。结论：口内刺激可抑制颈部肌肉活动。这种调制可能主要归因于伤害性传入神经，然而，非伤害性纤维也可以负责。意义：口内信息包括伤害性活动可以抑制颈部肌肉活动。从临床角度来看，目前的研究结果表明三叉神经区域和颈部区域之间的神经连接，增加了口面疼痛状况可能影响头部、颈部和肩部活动的可能性。(C)2013年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: To investigate the effect of painful electrical stimuli applied to intra-oral tissues around the teeth on the neck muscle activity in healthy humans.Methods: Electromyographic (EMG) responses of the dorsal neck muscles evoked by intra-oral electrical stimulation were recorded before and after local anesthesia to the stimulus site in 17 healthy volunteers.Results: Inhibition of dorsal neck muscle EMG activities on average 80% compared to baseline level was observed with a latency around 50 ms after the electrical stimulation before anesthesia, and the EMG activity inhibition decreased after anesthesia of the intra-oral stimulus site. The perceived intensity of the electrical stimuli as scored on a visual analogue scale (VAS) was 6.1 +/- 0.4 cm before anesthesia and 1.5 +/- 0.2 cm after anesthesia.Conclusion: Intra-oral stimulation can inhibit neck muscle activity. This modulation might be attributed mainly to nociceptive afferent nerves however, non-nociceptive fibers could also be responsible. Significance: Intra-oral information including nociceptive activity can inhibit neck muscle activity. From a clinical viewpoint, the present findings demonstrate the neural connectivity between the trigeminal region and the cervical region raising the possibility that orofacial pain conditions could influence head, neck and shoulder activity. (C) 2013 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.