Changes in masseteric hemodynamics time-related to mental stress
Changes in masseteric hemodynamics time-related to mental stress
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DOI：
10.1177/154405910408300220
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发表时间：
2004-02-01
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
精神应激可引起交感神经流出到不同区域的分离。然而，目前尚不清楚的交感神经流出到颌肌是如何与其他交感神经流出在精神压力下。本研究旨在探讨精神应激引起的手指出汗与咬肌血流动力学和肌电变化之间的时间关系。健康成年女性志愿者参与了本研究。咬肌血流动力学变化与精神应激时间密切相关，表现为精神应激前后肌血氧饱和度下降。与此相反，下颌闭合肌的肌电活动与心理应激没有时间相关性。这些结果表明，精神压力诱导血流动力学的变化，是不相关的肌电图活动在健康成年女性的咬肌。
Mental stress may cause a dissociation of sympathetic outflow to different regions. However, it remains unclear how the sympathetic outflow to jaw muscles is related to other sympathetic outflow under mental stress. The objective of this study was to clarify the temporal relationship between the finger sweat expulsion elicited by mental stress and the hemodynamic and electromyographic changes in the masseter muscle. Healthy adult female volunteers participated in this study. Masseteric hemodynamic changes were closely time-related to mental stress, showing a decrease in oxygen saturation of muscle blood around the onset of mental stress. In contrast, EMG activity of jaw-closing muscles was not time-related to mental stress. These results suggest that mental stress induces hemodynamic changes that are not associated with EMG activity in the masseter muscle of healthy adult females.