Human brain mapping:未用药强迫症患者局部脑神经活动的时间变异性

2021-06-26 MedSci原创 MedSci原创

强迫症患者CSTC回路内的区域性脑活动变异性增加,回路外区域变异性降低的特征性变化。特别地,强调CSTC回路外区域的功能障碍,如顶叶皮层和小脑在强迫症的病理生理学中起着重要作用。

强迫症(OCD)是一种致残性精神疾病,一生的患病率约为2-3%。强迫症患者的特点是反复出现不想要的想法、图像或冲动(痴迷)和重复行为(强迫),这些都与实质性的全局残疾有关。尽管对与强迫症相关的神经功能缺损的探索取得了许多进展,但强迫症的确切神经机制仍不清楚。 强迫症(obsessive-compulsive disorder,OCD)表现为局部大脑活动的改变,表现为低频波动幅度(low-frequency frusion,ALFF) ,但这种局部神经活动的时变特征仍有待于进一步阐明。 最近,华西医院龚启勇团队发表研究文章,通过单变量和多变量分析,在一个相对较大的未用药强迫症患者样本中,研究内在脑活动的动态变化。 采用滑动窗口法计算dALFF ,并比较73例强迫症患者与年龄和性别匹配的健康对照(HCs)之间的差异。还利用多变量模式分析来确定 dALFF 能否在个体水平上区分强迫症患者和 HCs。 未用药强迫症患者与HCs之间的dALFF有显著差异 a)强迫症患者和HCS患者之间的显著区域比较。暖色/冷色表示强迫症组的dALFF值高于HCs的区域/低于HCs的区域。(b)病程与右侧IPL的

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    2021-12-12 siiner
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    2022-05-19 tamgche
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    2021-06-27 chg122

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