抑郁症患者情绪图片反应特征及杏仁核反应模式的研究

被引:4
作者
李清伟 [1 ]
吴文源 [1 ]
李春波 [2 ]
申远 [1 ]
戴工华 [3 ]
王培军 [3 ]
翁旭初 [4 ]
刘一军 [5 ]
机构
[1] 同济大学附属同济医院精神医学科
[2] 上海交通大学医学院附属精神卫生中心
[3] 同济大学附属同济医院精神医医学影像科
[4] 中国科学院心理研究所
[5] Departments of Psychiatry and Neuroscience McKnight Brain Institute University of Florida
基金
国家基础研究计划;
关键词
抑郁症; 磁共振成像; 杏仁核; 习惯化; 国际情绪图片系统;
D O I
暂无
中图分类号
R686 [筋腱、韧带、滑囊疾病及损伤];
学科分类号
100220 [骨科学];
摘要
目的探讨抑郁症患者对情感刺激的行为学反应模式及其相关的杏仁核时程反应过程。方法 12例首次发病、未经治疗的抑郁症患者(抑郁症组)和13名健康个体(健康对照组)对观看正性、中性和负性情绪图片的愉悦度等评分;并在被动注视任务下行功能磁共振成像,采用感兴趣区分析方法,比较两组杏仁核在不同情绪图片任务组块间的血氧水平依赖(BOLD)信号时间反应特征。结果 (1)抑郁症组情绪图片愉悦度评分[正性:(6.6±0.2)分;中性:(4.7±0.1)分]低于健康对照组[分别为(7.7±0.2)分和(5.1±0.1)分],负性情绪图片评分[(3.4±0.3)分]高于健康对照组[(2.2±0.2)分;P<0.01]。(2)对正性情绪图片任务,两组间右侧杏仁核存在"组×时间"交互作用(P=0.002);抑郁症组杏仁核BOLD信号变化率为(0.02±0.09)%,激活时间后移至Block 2。对负性情绪图片任务,两组间左侧杏仁核有"组×时间"交互作用(P=0.008),右侧杏仁核存在组主效应(P=0.007)和时间主效应(P=0.016),抑郁症组BOLD信号变化率低于(-0.06±0.14)%。结论杏仁核是抑郁症患者丧失愉悦体验和情绪低落的神经基础之一。
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