Mental stress-induced physiological changes in the human masseter muscle
Mental stress-induced physiological changes in the human masseter muscle
复制标题
DOI：
10.1177/154405910408300308
复制
发表时间：
2004-03-01
影响因子：
7.6
通讯作者：
Takada, K
中科院分区：
文献类型：
--
作者：
Hidaka, O;Yanagi, M;Takada, K
到目前为止，长期心理应激对咀嚼肌血流动力学的影响还没有被研究过。我们假设了一些与交感神经系统活动有关的闭口肌的血液动力学和肌电变化。在健康成年女性志愿者进行2小时心理应激任务的同时，记录颞肌和咬肌的肌电活动，并无创性地测量咬肌的血流动力学变化。心率频谱分析评价自主神经功能。颞肌的综合肌电活动，而不是咬肌的综合肌电活动，显示出与交感神经活动增加一致的增加。在咬肌中，尽管综合肌电活动几乎没有变化，但血液动力学参数发生了显著变化。这些结果表明，颌骨肌肉的血流动力学对心理应激敏感，这暗示了与心理应激相关的颌肌功能障碍的病因学上的潜在作用。
The effect of a long mental stress on the hemodynamics of masticatory muscles has not been investigated to date. We hypothesized some hemodynamic and electromyographic changes in jaw-closure muscles related to sympathetic nervous system activity. While healthy adult female volunteers performed a two-hour mental stress task, electromyographic activity of the temporal and masseteric muscles was recorded, and hemodynamic changes of the masseter muscle were measured non-invasively. Autonomic function was assessed by heart rate spectral analysis. Integrated electromyographic activity of the temporalis muscle, but not the masseter muscle, showed an increase that coincided with the increase in sympathetic nervous activity. In the masseter muscle, despite little change in integrated electromyographic activity, notable changes were found in hemodynamic parameters. These results suggest that hemodynamics of jaw muscles is susceptible to mental stress, implying a potential role in the etiology of jaw muscle dysfunction associated with mental stress.