Mathews Jennifer R, Barch Deanna M
Department of Psychology, Washington University, St. Louis, MO 63130, USA.
Psychiatry Res. 2006 Aug 30;143(2-3):121-33. doi: 10.1016/j.psychres.2005.07.030. Epub 2006 Jun 30.
Anhedonia is a symptom that plays a significant role in theories of illness such as depression and schizophrenia. Some previous research suggests that participants who report high levels of social/physical anhedonia also show deficits in both self-report and physiological measures of emotional processing, particularly for measures of emotional valence as compared with emotional arousal. Little is known about memory for emotionally valenced information or how this might be related to emotional processing in anhedonia. Participants were 391 undergraduate students participating for course credit. We administered an incidental encoding task that required participants to rate emotional words on both valence and arousal dimensions. We then administered surprise recall and recognition tasks to all participants. Results indicated that higher levels of physical and social anhedonia were associated with attenuated valence ratings of emotional words but did not influence arousal ratings or the memory pattern for emotionally valenced information. These findings suggest that there is some reduction in emotional experience in individuals with anhedonia, but that this reduction does not appear to produce a deficit in memory performance, perhaps due to the intact experience of arousal.
快感缺乏是一种在诸如抑郁症和精神分裂症等疾病理论中起重要作用的症状。先前的一些研究表明，报告社交/身体快感缺乏程度较高的参与者在自我报告和情绪加工的生理测量方面也表现出缺陷，特别是与情绪唤醒相比，在情绪效价测量方面。对于情绪效价信息的记忆或其与快感缺乏中情绪加工的关系知之甚少。参与者为391名参与课程获得学分的本科生。我们进行了一项附带编码任务，要求参与者对情绪词汇在效价和唤醒维度上进行评分。然后我们对所有参与者进行了意外回忆和识别任务。结果表明，较高水平的身体和社交快感缺乏与情绪词汇的效价评分减弱有关，但不影响唤醒评分或情绪效价信息的记忆模式。这些发现表明，快感缺乏个体的情绪体验有所减少，但这种减少似乎并未导致记忆表现的缺陷，这可能是由于唤醒体验完好无损。
