在精神分裂症患者的thalamocortical冠状动脉排放网络内改变有效连接性
Matthew Lehet1,2, Beier Yao1,3,4, Ivy F Tso5
1Psychology, Michigan State University, East Lansing, MI, 48824, United States.
Schizophrenia bulletin
|January 24, 2025
概括
精神分裂症患者在眼运动控制网络中表现出大脑连接的改变. 具体来说,降低了体与体内硫的连接性与被动性症状相关,为代理干扰提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 精神病学是一个精神病学.
背景情况:
- 顺序眼动规划依赖于尾随性放电 (CD) 信号.
- 精神分裂症中改变的CD信号可能解释了被动性和异常的自我体验.
- 一个关键的眼发动机CD网络涉及泰拉马斯,额头眼球场 (FEF) 和腹膜内 (IPS).
研究的目的:
- 研究精神分裂症 (SZ) 和健康对照组 (HC) 之间的眼动计划期间有效大脑连接的差异.
- 探索SZ的临床症状和网络连接之间的关系.
主要方法:
- 使用动态因果建模 (DCM) 分析了30个SZ和29个HC的fMRI数据.
- 这项研究集中在一个网络,包括thalamus,FEF和IPS,在双步 (DS) 萨卡德任务中激活.
- 检查了有效的连接参数,以检查任务调制和与临床症状的相关性.
主要成果:
- 双步任务调节了网络连接,确认了CD传输.
- 与对照人群相比,精神分裂症患者表现出从丘脑到IPS的有效连接性降低.
- 这种减少的连接性与被动性症状的严重程度相关.
结论:
- 这些发现突出了IPS和thalamocortical连接在眼运动CD信号传输中的关键作用.
- 改变的CD信号提供了一个潜在的神经机制,是精神分裂症中潜在的代理干扰.
- 这项研究提供了对精神分裂症的尾随性放电改变的机制性见解.
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