Does oxytocin influence the early detection of angry and happy faces?
Does oxytocin influence the early detection of angry and happy faces?
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DOI：
10.1016/j.psyneuen.2008.09.001
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发表时间：
2009-02-01
影响因子：
3.7
通讯作者：
Cox, Rochelle E.
中科院分区：
文献类型：
--
作者：
Guastella, Adam J.;Carson, Dean S.;Cox, Rochelle E.
催产素在社会行为中起着至关重要的作用，尽管它对社会认知的影响尚未完全了解。过去的研究表明，催产素增强编码和概念识别积极的社会刺激比社会威胁刺激。在这项研究中，我们评估是否催产素修改的反应，积极的和威胁性的社会刺激在早期的知觉阶段的处理使用视觉搜索任务。在一项双盲、随机、安慰剂对照、受试者间设计中，对104名健康志愿者给予催产素（24 IU）或安慰剂。45分钟后，参与者返回完成视觉搜索范式。结果表明，愤怒的脸比快乐的脸更有效地检测。参与者也更长时间和更频繁地注视着愤怒的面孔。然而，催产素并没有影响反应时间、准确性，也没有影响对愤怒或快乐面孔的注视，即使参与者被分为高社交焦虑和低社交焦虑。这项研究的结果表明，催产素可能不会影响检测积极的和威胁性的社会刺激在早期知觉水平的处理。催产素可能有更大的影响，在改变社会效价的认知加工在更多的概念和精细的加工水平。皇冠版权所有（C）2008由爱思唯尔有限公司出版。保留所有权利。
Oxytocin has a crucial role in social behaviour, although its effects on social cognition are not fully understood. Past research shows that oxytocin enhances encoding and conceptual recognition of positive social stimuli over social-threat stimuli. In this study, we evaluated whether oxytocin modified responses to positive and threatening social stimuli at an earlier perceptual stage of processing using the visual search task. In a double-blind, randomized, placebo-controlled, between-subject design, oxytocin (24 IU) or a placebo was administered to 104 healthy volunteers. Participants returned to complete the visual search paradigm 45 min later. Results showed that angry faces were detected more efficiently than happy faces. Participants also gazed longer and more frequently toward angry faces. Oxytocin did not, however, influence response time, accuracy, or gaze toward angry or happy faces, even when participants were separated into high- and low-social anxiety. The results of this study suggest that oxytocin may not influence the detection of positive and threatening social stimuli at early perceptual levels of processing. Oxytocin may have greater influence in altering the cognitive processing of social valence at more conceptual and elaborate levels of processing. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.