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首页> 外文期刊>Pain. >Pain perception, somatosensory event-related potentials and skin conductance responses to painful stimuli in high, mid, and low hypnotizable subjects: effects of differential pain reduction strategies.
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Pain perception, somatosensory event-related potentials and skin conductance responses to painful stimuli in high, mid, and low hypnotizable subjects: effects of differential pain reduction strategies.

机译：高，中和低催眠性受试者的疼痛知觉，体感事件相关电位和皮肤电导对疼痛刺激的反应：不同疼痛减轻策略的影响。

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In this study, pain perception, somatosensory event-related potential (SERP) and skin conductance response (SCR) changes during hypnotic suggestions of Deep Relaxation, Dissociated Imagery, Focused Analgesia, and Placebo, compared with a Waking baseline condition, were investigated. SERPs were recorded from frontal, temporal, central, and parietal scalp sites. Ten high, 9 mid, and 10 low hypnotizable right-handed women participated in the experiment. The following measures were obtained: (1) pain and distress tolerance ratings; (2) sensory and pain thresholds to biphasic electrical stimulation delivered to the right wrist; (3) reaction time and number of omitted responses; (4) N2 (280+/-11 ms) and P3 (405+/-19 ms) peak amplitudes of SERPs to target stimuli delivered using an odd-ball paradigm; (5) number of evoked SCRs and SCR amplitudes as a function of stimulus repetition. Results showed, high, mid and low hypnotizables exhibited significant reductions of reported pain and distress ratings during conditions of Deep Relaxation/Suggestion of Analgesia, Dissociated Imagery and Focused Analgesia. High hypnotizable subjects displayed significant reductions in pain and distress levels compared to mid and low hypnotizables during Dissociated Imagery, Focused Analgesia and, to a lesser degree, during Deep Relaxation. Placebo condition did not display significant differences among hypnotizability groups. High hypnotizables, compared to mid and low hypnotizables, also showed significant increases in sensory and pain thresholds during Dissociated Imagery and Focused Analgesia. High, mid, and low groups showed significant reductions in P3 peak amplitudes across all hypnosis conditions and, to a lesser degree, during Placebo. The temporal cortical region was the most sensitive in differentiating SERP responses among hypnotizability groups. On this recording area the subjects highly susceptible to hypnosis displayed significantly smaller P3 and greater N2 peaks during Focused Analgesia than did the other hypnotizable groups. In this condition highly susceptible subjects also reported the highest number of omitted responses and the shortest Reaction Times. These subjects also showed faster habituation of SCRs when compared with mid and low hypnotizables. During Dissociated Imagery and Focused Analgesia, highly hypnotizable subjects also disclosed a smaller total number of evoked SCRs than did mid and low hypnotizable subjects. The results are discussed considering possible common and different mechanisms to account for the effects of different hypnotic suggestions.
机译：在这项研究中，与醒来基线状况相比，研究了深度放松，离体意象，集中镇痛和安慰剂的催眠建议期间的疼痛知觉，体感事件相关电位（SERP）和皮肤电导反应（SCR）变化。从额，颞，中央和顶头皮部位记录SERP。十位高，中位，十位低位催眠右手女性参加了该实验。获得了以下措施：（1）疼痛和窘迫耐受等级; （2）传递到右手腕的双相电刺激的感觉和疼痛阈值; （3）反应时间和遗漏的反应次数; （4）SERP的N2（280 +/- 11 ms）和P3（405 +/- 19 ms）峰值振幅，以奇数球范式传递给目标刺激; （5）作为刺激重复的函数的诱发SCR和SCR幅度的数量。结果表明，在深层放松/镇痛建议，离体意象和集中镇痛的情况下，高，中和低催眠药显着降低了所报告的疼痛和痛苦等级。与高和低催眠状态的受试者相比，在解离影像，集中镇痛以及深度放松期间，与低和低催眠状态的受试者相比，疼痛和痛苦水平明显降低。催眠药组之间的安慰剂状况无明显差异。与中低催眠药相比，高催眠药在离体影像和聚焦镇痛过程中也表现出感觉和疼痛阈值的显着增加。在所有催眠条件下，高，中和低组的P3峰值幅度均显着降低，而安慰剂组的P3峰值幅度较小。颞皮层区域在区分催眠组的SERP反应中最敏感。在这个记录区域，与其他催眠组相比，在集中镇痛过程中，高度易受催眠作用的受试者表现出明显更小的P3和更大的N2峰。在这种情况下，高度易感人群也报告了最多的遗漏反应和最短的反应时间。与中低催眠药相比，这些受试者还表现出更快的SCR习惯化。在离体图像和聚焦镇痛过程中，高度可催眠的受试者也比中，低催眠的受试者减少了诱发的SCR总数。考虑可能的常见机制和不同机制来解释不同催眠建议的影响，对结果进行了讨论。

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