‘Prior entry’ for pain: Attention speeds the perceptual processing of painful stimuli
‘Prior entry’ for pain: Attention speeds the perceptual processing of painful stimuli
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疼痛的“预先进入”：注意力加速疼痛刺激的感知处理
DOI：
10.1016/j.neulet.2006.12.006
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发表时间：
2007
影响因子：
2.5
通讯作者：
C. Spence
中科院分区：
文献类型：
--
作者：
M. Zampini;Kelly S. Bird;D. Bentley;A. Watson;G. Barrett;Anthony K. P. Jones;C. Spence
我们调查了伤害性和视觉刺激对的连续性的感知是否依赖于参与者对特定感觉方式（疼痛或视觉）的注意力集中。采用恒定刺激的方法，在不同的刺激起始时间（SOA）随机呈现两种刺激（一种是疼痛刺激，一种是视觉刺激）。参与者做出了不快的口头反应，他们认为哪种刺激首先出现，或者回答说这两种刺激是同时出现的。在三种不同的注意条件（块）下重复这个时间歧视任务：注意力分散，注意疼痛，注意视力。结果表明，在注意分散的条件下，伤害性刺激必须在视觉刺激之前呈现，才能使两者同时被感知。两个集中注意力条件的比较显示，疼痛刺激被认为是发生在更早的时间（相对于视觉刺激），当注意力被导向疼痛时，比当它被导向视觉。这些结果提供了第一个经验证明，注意可以调节疼痛刺激的时间知觉。
We investigated whether the perception of simultaneity for pairs of nociceptive and visual stimuli was dependent upon the focus of participants’ attention to a particular sensory modality (either pain or vision). Two stimuli (one painful and the other visual) were presented randomly at different stimulus onset asynchronies (SOAs) using the method of constant stimuli. Participants made unspeeded verbal responses as to which stimulus they perceived as having been presented first, or else responded that the two stimuli were presented simultaneously. This temporal discrimination task was repeated under three different attention conditions (blocks): divided attention, attend pain, and attend vision. The results showed that under conditions of divided attention, nociceptive stimuli had to be presented before visual stimuli in order for the two to be perceived as simultaneous. A comparison of the two focused attention conditions revealed that the painful stimulus was perceived as occurring earlier in time (relative to the visual stimulus) when attention was directed toward pain than when it was directed toward vision. These results provide the first empirical demonstration that attention can modulate the temporal perception of painful stimuli.