Pain: an unpleasant topic
Pain: an unpleasant topic
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DOI：
10.1016/s0304-3959(99)00139-6
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发表时间：
1999-08-01
期刊：
影响因子：
7.4
通讯作者：
Fields, HL
中科院分区：
文献类型：
--
作者：
Fields, HL
本文试图在疼痛的心理物理学背景下阐明不愉快的建构。第一个关键点是，不愉快的一个方面与刺激强度紧密相关，因此是一种感官辨别。疼痛具有这种性质，但其他躯体感觉也具有这种性质，如瘙痒和感觉迟钝，大多数人不认为它们是疼痛。由此推论，痛苦必须有一种不同于不愉快的性质，才能被明确地识别出来。我用“算法性”这个词来形容这种品质。除了刺激约束（主要）不愉快，还有一种不愉快的经历，反映了一个更高层次的过程，它与刺激强度有着高度可变的关系，在很大程度上取决于记忆和上下文特征。我把这种经历称为第二次不愉快。我认为，感觉-辨别/情感-动机二分法已经失去了它的用处，目前更多的是一个障碍，而不是疼痛的神经生物学解释的指南。为了增进我们对疼痛的理解，我们需要专门设计的心理物理学工具来区分原发性不愉快与痛觉和继发性不愉快。这些工具可以用来确定疼痛的神经机制。(C)1999年国际疼痛研究协会。出版社：Elsevier Science B. V.
This essay is an attempt to clarify the construct of unpleasantness in the context of the psychophysics of pain. The first critical point: is that one aspect of unpleasantness is tightly coupled to stimulus intensity and is therefore a sensory discrimination. Pain has this quality, but so do other somatic sensations such as itch and dysesthesias that are not recognized as painful by most people. A corollary of this is that pain must have a quality other than unpleasantness that allows it to be unequivocally identified. I use the term algosity for that quality. In addition to stimulus bound (primary) unpleasantness, there is an unpleasant experience that reflects a higher level process which has a highly variable relationship to stimulus intensify and is largely determined by memories and contextual features. I have termed this experience secondary unpleasantness. I suggest that the sensory-discriminative/affective-motivational dichotomy has outlived its usefulness and is currently more of an impediment than a guide to neurobiological explanations of pain. In order to increase our understanding of pain we need psychophysical tools designed specifically to differentiate primary unpleasantness from both algosity and secondary unpleasantness. These tools can then be used to determine the neural mechanisms of pain. (C) 1999 International Association for the Study of Pain. Published by Elsevier Science B.V.