Arditi-Babchuk Hadar, Feldman Ruth, Gilboa-Schechtman Eva
Gonda Brain Science Centre and the Department of Psychology, Bar-Ilan University, Ramat-Gan, Israel.
J Trauma Stress. 2009 Jun;22(3):254-7. doi: 10.1002/jts.20417.
Parasympathetic and heart rate (HR) reactivity to memories of traumatic and pleasant events were investigated in trauma-exposed individuals (n = 40). Vagal tone and HR were recorded before, during, and following recall of traumatic and pleasant events. Posttraumatic stress (PTS) was related to blunted parasympathetic reactivity among trauma-exposed individuals. Specifically, PTS severity was related to lower parasympathetic activation and lower recovery following trauma recall, and to lower parasympathetic activation (but not recovery) in response to a pleasant event recall. No association was observed between PTS severity and initial parasympathetic tone. However, PTS severity was associated with initial HR. Assessment of parasympathetic reactivity may enhance our understanding of the normative and pathological reactions to trauma and stress.
对40名经历过创伤的个体进行了研究，以探讨副交感神经及心率（HR）对创伤性和愉快事件记忆的反应性。在回忆创伤性和愉快事件之前、期间及之后记录迷走神经张力和心率。创伤后应激（PTS）与经历创伤个体的副交感神经反应迟钝有关。具体而言，PTS严重程度与创伤回忆后较低的副交感神经激活及较低的恢复有关，且与对愉快事件回忆的较低副交感神经激活（但不是恢复）有关。未观察到PTS严重程度与初始副交感神经张力之间存在关联。然而，PTS严重程度与初始心率有关。评估副交感神经反应性可能会增进我们对创伤和应激的正常及病理反应的理解。
