抑郁症患者近期自杀念头和自杀企图的改变动态大脑活动及其与认知功能的关系
Na Shen1, Zhilu Chen2, Hao Sun1
1Nanjing Brain Hospital, Clinical Teaching Hospital of Medical School, Nanjing University, Nanjing, China.
Journal of affective disorders
|February 21, 2025
概括
自杀企图 (SA) 与自杀念头 (SI) 相比,与更大的认知缺陷和右脑前皮质大脑活动的改变有关. 这一神经成像发现可能解释了抑郁症患者从SI向SA的进展.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 认知心理学 认知心理学
背景情况:
- 构想到行动的框架表明,不同的神经机制是自杀构想 (SI) 和自杀企图 (SA) 的基础.
- 神经认知障碍及其在SI与SA中的神经支需要进一步调查.
研究的目的:
- 研究近期自杀未遂 (RSA) 和近期自杀念头 (SI) 的抑郁患者之间的神经认知差异.
- 探索神经机制,特别是动态区域同质性 (dReHo),与RSA和SI的认知缺陷相关.
主要方法:
- 招募了730名参与者:RSA组 (n=69),SI组 (n=327),没有SI/SA抑郁组 (NSI,n=87),和健康对照组 (HC,n=247).
- 利用休息状态功能磁共振成像 (rs-fMRI) 和认知功能评估.
- 使用滑动窗口方法测量了dReHo并分析了群体差异.
主要成果:
- 与NSI组相比,SI组表现出言语记忆的减少.
- RSA组表现出更严重的口头记忆缺陷,以及工作记忆和认知灵活性受损.
- 在RSA组中观察到右前骨 (PCUN.R) 的dReHo升高,与认知障碍相关.
结论:
- 患有SA的抑郁患者在右前肌 (PCUN.R) 中表现出功能活动变异性的增加.
- 这种改变的大脑活动可能是RSA患者更严重的认知障碍的基础.
- 这些发现表明,从SI向SA的进展具有潜在的神经基础,为未来的研究提供了洞察力.
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