Effects of a Force Production Task and a Working Memory Task on Pain Perception
Effects of a Force Production Task and a Working Memory Task on Pain Perception
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DOI：
10.1016/j.jpain.2013.07.012
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发表时间：
2013-11-01
期刊：
影响因子：
4
通讯作者：
Coombes, Stephen A.
中科院分区：
文献类型：
--
作者：
Paris, Tiffany A.;Misra, Gaurav;Coombes, Stephen A.
本研究的目的是考察握力产生任务和工作记忆任务在任务执行过程中同时给予左手或右手引起疼痛的热刺激的止痛效果。包括视觉分心和热刺激的控制条件，并收集和分析了力量表现量表和工作记忆表现量表。我们的实验揭示了三个新的发现。首先，我们发现，在任务执行过程中，当给予引起疼痛的热刺激时，准确的等长力收缩可以产生止痛效应。第二，在用力任务和工作记忆任务中，疼痛诱发刺激被传递到左手或右手时，其止痛效应的大小没有差异。第三，我们发现在强迫任务和工作记忆任务中的止痛分数之间没有相关性。我们的发现对康复环境具有临床意义，因为它们表明一个肢体产生的急性力量会影响另一个肢体同时感受到的疼痛感觉。从理论的角度，我们在集中式疼痛抑制反应的背景下解释了我们关于力量和记忆驱动的镇痛的研究结果。观点：本文表明，无论身体的哪一侧经历疼痛，力量产生和工作记忆都具有镇痛效果。然而，止痛分数并不相关，这表明一些人在强迫任务中比在工作记忆任务中感受到更多的疼痛缓解，反之亦然。(C)2013年，爱思唯尔公司代表美国疼痛协会出版
The goal in the current study was to examine the analgesic effects of a pinch grip-force production task and a working memory task when pain-eliciting thermal stimulation was delivered simultaneously to the left or right hand during task performance. Control conditions for visual distraction and thermal stimulation were included, and force performance measures and working memory performance measures were collected and analyzed. Our experiments revealed 3 novel findings. First, we showed that accurate isometric force contractions elicit an analgesic effect when pain-eliciting thermal stimulation was delivered during task performance. Second, the magnitude of the analgesic effect was not different when the pain-eliciting stimulus was delivered to the left or right hand during the force task or the working memory task. Third, we found no correlation between analgesia scores during the force task and the working memory task. Our findings have clinical implications for rehabilitation settings because they suggest that acute force production by one limb influences pain perception that is simultaneously experienced in another limb. From a theoretical perspective, we interpret our findings on force and memory driven analgesia in the context of a centralized pain inhibitory response.Perspective: This article shows that force production and working memory have analgesic effects irrespective of which side of the body pain is experienced on. Analgesia scores were not correlated, however, suggesting that some individuals experience more pain relief from a force task as compared to a working memory task and vice versa. (C) 2013 Published by Elsevier Inc. on behalf of the American Pain Society