Xie Wei-zhen, Yan Chao, Ying Xiang-yu, Zhu Shi-you, Shi Hai-song, Wang Yi, Cheung Eric F C, Chan Raymond C K
1] Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China [2] Department of Psychology, University of California, Riverside, CA, USA.
1] Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China [2] School of Psychology and Cognitive Science, East China Normal University, Shanghai, China.
Sci Rep. 2014 Feb 11;4:4056. doi: 10.1038/srep04056.
Anticipatory and consummatory dissociation of hedonic experience may manifest as anhedonia in schizophrenia. However, it is unclear if this temporal dissociation of pleasure experience is also relevant in other symptoms like social anhedonia in the schizophrenia disorder spectrum. The present study applied two incentive delay tasks involving different incentive types (money vs. social affective images) to a sample of 28 participants with elevated social anhedonia (SocAnh) and 38 healthy controls from a population of 476 college students. The results showed that the SocAnh group had comparable anticipatory sensitivity and consummatory pleasure towards monetary incentives as the controls; but they exhibited significant decrease in both anticipatory sensitivity and consummatory experience to positive social affective images. These findings demonstrate the presence of a domain-specific deficit in people with social anhedonia towards social affective information, and suggest that incentive types could confound the findings on the dissociation of anticipatory vs. consummatory hedonic capacities.
享乐体验的预期性与满足性解离可能在精神分裂症中表现为快感缺乏。然而，这种愉悦体验的时间解离在精神分裂症谱系障碍的其他症状（如社交快感缺乏）中是否也相关尚不清楚。本研究对来自476名大学生群体的28名社交快感缺乏（SocAnh）程度较高的参与者和38名健康对照者进行了两项涉及不同奖励类型（金钱与社会情感图像）的奖励延迟任务。结果显示，SocAnh组对金钱奖励的预期敏感性和满足性愉悦与对照组相当；但他们对积极社会情感图像的预期敏感性和满足性体验均显著降低。这些发现表明，社交快感缺乏者在面对社会情感信息时存在特定领域的缺陷，并表明奖励类型可能会混淆关于预期性与满足性享乐能力解离的研究结果。
