目的:本研究从抑郁症快感缺失亚型的脑功能研究(functional magnetic resonance imaging, fMRI)出发,探讨抑郁症期待性和消费性快感缺失脑环路的差异。为研究抑郁症的病因学,实现疾病的早期筛查、分型诊断和病因治疗提供依据。方法:本研究共包括功能磁共振实验和心理评估两部分。采用功能磁共振技术,被试分为重性抑郁障碍(MDD)组和与之匹配的正常对照组,用奖赏延迟任务(MID范式)考察抑郁症患者奖赏加工过程期待和消费两方面的异常。心理评估部分主要采用TEPS量表(Temporal Experience of Pleasure Scale,快乐体验问卷),用于评价消费性快乐体验和期待性快乐体验。心理评估部分患者还要进行汉密尔顿焦虑(HAM-A)和21项版本的汉密尔顿抑郁(HAM-D)量表的评估。最后15名符合标准的抑郁症患者,15名正常对照患者参加了本次实验。结果:(1)行为学:奖赏延迟任务的反应时上,正常组与对照组并未出现主效应(F=2.121,p=0.167),不同的刺激类型之间未出现主效应(F=3.200,p=0.074),组别与刺激型之间也无交互效应(F=1.900,P=0.1...
【英文摘要】
Objective:Major depressive disorder (MDD) is a common mood disorder which has a high leading cause of death and disability. However, the diagnostic, comorbidity, etiological and symptom heterogeneity of MDD lead to difficulties of identifying neurobiological mechanisms and finding more effective treatments. So it is essential to distinguish between motivational and consummatory anhedonia. Emerging evidence from neuroimaging studies indicates that the dysfunction of the reward system may be the potential neu...