动态大脑年龄建模识别了精神分裂症的网络特定认知缺陷
Mohammad Sendi1, Sabrina Edwards-Swart2, Bradley Baker3
1Harvard Medical School/McLean Hospital.
Research square
|November 24, 2025
概括
大脑年龄差距 (BAG) 预测精神分裂症的认知缺陷. 基于动态功能网络连接 (dFNC) 的模型显示BAG是注意力和工作记忆障碍的敏感生物标志物.
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.
- 医疗成像医学成像
背景情况:
- 精神分裂症的特征是注意力和工作记忆的缺陷.
- 大脑年龄差距 (BAG) 是大脑功能障碍的一个潜在生物标志物.
- BAG与动态大脑功能之间的联系尚不清楚.
研究的目的:
- 研究大脑年龄差距 (BAG) 与精神分裂症认知功能之间的关联.
- 为了比较静态 (sFNC) 和动态 (dFNC) 功能网络连接在预测认知缺陷方面的有效性.
- 确定与BAG和认知障碍相关的特定大脑网络.
主要方法:
- 开发了使用静态 (sFNC) 和动态 (dFNC) 功能网络连接的大型静态fMRI数据集 (英国生物银行,HCP) 的大脑年龄模型.
- 在一个独立的精神分裂症队列 (FBIRN) 中验证的模型.
- 评估了BAG与注意力/工作记忆性能之间的关联.
主要成果:
- 较高的BAG显著与较差的注意力和工作记忆有关 (FDR p < 0.01).
- 基于dFNC的BAG模型与认知缺陷的关联比sFNC模型更强.
- 在认知控制,默认模式和皮层下网络中,网络特定的BAG预测了认知障碍.
结论:
- 基于动态功能网络连接 (dFNC) 的BAG是精神分裂症认知功能障碍的敏感生物标志物.
- 动态连接措施对于推进精确诊断和精神分裂症患者分层是有价值的.
- 这项研究通过使用先进的神经成像技术,增强了对精神分裂症中大脑功能障碍的理解.
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