在双相情绪障碍中潜在的自杀风险的受约束的大脑状态动态:能源景观分析
Shubin Wang1, Li Xue2, Junneng Shao1
1School of Biological Sciences & Medical Engineering, Southeast University, Nanjing, 210096, China; Child Development and Learning Science, Key Laboratory of Ministry of Education, China.
Journal of affective disorders
|February 18, 2026
概括
具有高自杀风险的双相情感障碍 (BD) 个体表现出刚性大脑动态,功能性大脑状态越来越不稳定. 这种神经刚性可能作为BD中自杀脆弱性的生物标志物.
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.
- 计算精神病学是一种计算精神病学.
背景情况:
- 自杀是双相情感障碍 (BD) 中的主要死亡原因.
- 在BD中潜在的自杀风险的神经机制,特别是与大脑动态和认知灵活性相关的神经机制,尚未得到充分理解.
- 假设改变的大脑动态有助于BD患者的认知情感灵活性受损.
研究的目的:
- 调查BD和自杀风险不同的人中大脑活动的能量和动态约束.
- 通过能源景观建模来描述 BD 中自杀脆弱性的神经支柱.
- 探索大脑动态,神经刚性和BD中自杀企图之间的关系.
主要方法:
- 分析了123名BD患者的休息状态功能磁共振成像 (fMRI) 数据 (61名自杀未遂者,62名未尝试者) 和68名健康对照.
- 能源景观建模被用来表示大脑活动作为功能状态之间的过渡,量化神经刚性.
- 组对比和相关性分析检查了吸引力稳定性,过渡模式,以及它们与临床和认知因素的联系.
主要成果:
- 确定了四个主要的吸引盆地 (稳定的大脑状态).
- 特定吸引子盆地 (A和D) 的频率和稳定性降低与自杀风险增加相关,从健康对照群到未尝试者和自杀企图者.
- 更高的自杀风险与更大的神经刚性有关,其特征是受限制的,重复性的大脑状态过渡. 盆地A的较低稳定性与自杀风险有关,部分由认知障碍介导.
结论:
- 自杀的脆弱性在BD的特点是根深蒂固的功能性大脑状态和减少的大脑状态过渡多样性.
- 大脑动态中的高能量约束可能会损害适应性重新配置,导致神经刚性.
- 改变的大脑状态动态显示出潜在的双相情感障碍中自杀风险的生物标志物.
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