Impaired selective attention in chronic pain patients
Impaired selective attention in chronic pain patients
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DOI：
10.1016/s1090-3801(99)90014-9
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发表时间：
1999-01-01
期刊：
影响因子：
--
通讯作者：
Plaghki, LH
中科院分区：
文献类型：
--
作者：
Grisart, JM;Plaghki, LH
最近的几项研究表明，慢性疼痛患者的认知抱怨可能是由于持续疼痛和精神任务之间的干扰，因为它们共享共同和有限的注意力资源。本研究旨在进一步探讨慢性疼痛和注意力障碍之间的假定关系。为此，研究人员在一组连续33名慢性非恶性疼痛患者和一组20名健康受试者中使用了一种更灵敏的传统色词Stroop任务，其中包含四个难度越来越大的子任务。这个任务专门评估选择性注意。由于Stroop任务对恶劣情绪状态很敏感，慢性疼痛患者的焦虑和抑郁水平也被评估。正如预期的那样，反应时间的增加与子任务的难度呈正相关。然而，与对照组相比，只有高强度慢性疼痛患者对每个子任务的反应时间显著增加。反应准确性不受影响。疼痛程度高的患者在特质焦虑上的得分高于疼痛程度低的患者。然而，ANCOVA显示，特质焦虑得分x疼痛组的相互作用并不显著，因此特质焦虑对预测任务表现没有帮助。这些结果表明，选择性注意力障碍是慢性疼痛患者疼痛强度的一个功能。(C) 1999年国际疼痛研究协会欧洲分会联合会。
Several recent studies have suggested that cognitive complaints among chronic pain patients could result from an interference between ongoing pain and mental tasks, as they share common and limited attentional resources. This study was intended to further explore that presumed relationship between chronic pain and attentional disorders. For this purpose, a more sensitive version of the conventional colour-word Stroop task, with four subtasks of increasing difficulty was used in a group of 33 consecutive patients with chronic nonmalignant pain and a group of 20 healthy subjects as controls. This task assesses specifically selective attention. Since the Stroop task is sensitive to dysthymic states, levels of anxiety and depression were also assessed in chronic pain patients.As expected, the increase of response times was positively related to the difficulty of the subtasks. However, only the patients with chronic pain of high intensity presented a significant increase in the response times to each subtask as compared to controls. Response accuracy was not affected. Patients with high pain had higher scores on trait-anxiety than those with low-intensity pain. However, ANCOVA showed that trait-anxiety scores x pain groups interactions were not significant and thus that trait-anxiety was not useful for predicting task performance.These results point to a disturbance of selective attention as a function of pain intensity in chronic pain patients. (C) 1999 European Federation of Chapters of the International Association for the Study of Pain.