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Alterations in electrodermal activity and cardiac parasympathetic tone during hypnosis

机译：催眠过程中皮肤电活动和心脏副交感神经的变化

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摘要

Exploring autonomic nervous system (ANS) changes during hypnosis is critical for understanding the nature and extent of the hypnotic phenomenon and for identifying the mechanisms underlying the effects of hypnosis in different medical conditions. To assess ANS changes during hypnosis, electrodermal activity and pulse rate variability (PRV) were measured in 121 young adults. Participants either received hypnotic induction (hypnosis condition) or listened to music (control condition), and both groups were exposed to test suggestions. Blocks of silence and experimental sound stimuli were presented at baseline, after induction, and after de-induction. Skin conductance level (SCL) and high frequency (HF) power of PRV measured at each phase were compared between groups. Hypnosis decreased SCL compared to the control condition; however, there were no group differences in HF power. Furthermore, hypnotic suggestibility did not moderate ANS changes in the hypnosis group. These findings indicate that hypnosis reduces tonic sympathetic nervous system activity, which might explain why hypnosis is effective in the treatment of disorders with strong sympathetic nervous system involvement, such as rheumatoid arthritis, hot flashes, hypertension, and chronic pain. Further studies with different control conditions are required to examine the specificity of the sympathetic effects of hypnosis.
机译：探索催眠过程中的自主神经系统（ANS）的变化对于了解催眠现象的性质和程度以及确定催眠作用在不同医学状况下的潜在机制至关重要。为了评估催眠过程中的ANS变化，对121位年轻成年人的皮肤电活动和脉搏率变异性（PRV）进行了测量。参与者要么接受催眠诱导（催眠状态），要么听音乐（对照条件），并且两组都接受测试建议。在基线，诱导后和去诱导后出现沉默和实验性声音刺激。比较各组在每个阶段测得的PRV的皮肤电导水平（SCL）和高频（HF）功率。与对照相比，催眠使SCL降低;但是，高频功率没有组差异。此外，在催眠组中，催眠提示性没有减轻ANS的变化。这些发现表明催眠会降低滋补交感神经系统的活动，这可能解释了催眠为什么能有效治疗强交感神经系统疾病，例如类风湿性关节炎，潮热，高血压和慢性疼痛。需要进一步研究不同的控制条件，以检查催眠的交感神经的特异性。

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