Interactive effects of the affect quality and directional focus of mental imagery on pain analgesia
Interactive effects of the affect quality and directional focus of mental imagery on pain analgesia
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DOI：
10.1023/a:1011387122804
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发表时间：
2001-06-01
影响因子：
3
通讯作者：
DeGood, DE
中科院分区：
文献类型：
--
作者：
Alden, AL;Dale, JA;DeGood, DE
大学生（25名男性和25名女性）被随机分配（性别内）的4个因素组，根据操纵的影响质量（积极与消极）和方向性焦点（内部与外部）的心理意象和控制组不接受任何操作。这两个图像变量有显着的影响，疼痛耐受性和评级在冷加压试验中，积极的影响和外部图像产生更大的镇痛比他们的对应条件。积极的影响图像与外部图像相结合，导致最低的疼痛组之间的报告。然而，自我报告的情绪描述符并不总是平行的疼痛耐受性和评级数据。同样，虽然心率和皮肤电位的反应增加，在冷加压作为一个整体，实验组之间唯一显着的差异是相对较高的皮肤电位反应的积极影响，外部图像组，可能反映了更大的任务参与这一组。似乎，在这种情况下，意象主要通过认知而不是通过疼痛体验的生理介质来运作。
College students (25 men and 25 women) were randomly assigned (within sex) to each of the 4 factorial groups, based on manipulation of affect quality (positive vs. negative) and directional focus (internal vs. external) of mental imagery and to a control group receiving no manipulation. Both imagery variables had a significant impact on pain tolerance and ratings during a cold-pressor test with positive affect and external imagery producing greater analgesia than their counterpart conditions. Positive affect imagery combined with external imagery resulted in the lowest reported pain amongst the groups. However; self-reported mood descriptors did not consistently parallel the pain tolerance and rating data. Likewise, although heart rate and skin potential responses increased during the cold pressor for the group as a whole, the only significant difference amongst the experimental groups was the relatively higher skin potential reactivity of the positive affect-external imagery group-possibly reflecting greater task engagement for this group. Seemingly, imagery in this situation operates primarily via cognitive, rather than via physiological mediators of the pain experience.