McNulty W H, Gevirtz R N, Hubbard D R, Berkoff G M
California School of Professional Psychology-San Diego 92121.
Psychophysiology. 1994 May;31(3):313-6. doi: 10.1111/j.1469-8986.1994.tb02220.x.
Fourteen subjects were evaluated by needle electromyography in a trapezius myofascial trigger point and simultaneously in adjacent nontender trapezius muscle fibers during a control condition (forward counting), a stressful condition (mental arithmetic), and resting baselines. Based on recent data implicating autonomic innervation in muscle function, we hypothesized that the trigger point would be more responsive than the adjacent muscle to psychological stress. The results showed increased trigger point electromyographic activity during stress, whereas the adjacent muscle remained electrically silent. These results suggest a mechanism by which emotional factors influence muscle pain. This may have significant implications for the psychophysiology of pain associated with trigger points.
通过针电极肌电图对14名受试者斜方肌肌筋膜触发点进行评估，同时在对照状态（顺数）、应激状态（心算）和静息基线状态下对相邻的斜方肌非激痛点肌纤维进行评估。基于近期有关自主神经支配参与肌肉功能的数据，我们推测触发点对心理应激的反应会比相邻肌肉更敏感。结果显示，在应激状态下触发点的肌电图活动增加，而相邻肌肉仍无电活动。这些结果提示了一种情绪因素影响肌肉疼痛的机制。这可能对与触发点相关的疼痛心理生理学具有重要意义。
