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在严重抑郁症中,功能连接体梯度的异对称性发生变化

Yaqian Yang^1,2, Yi Zhen^1,2, Xin Wang^2,3,4,5,6

¹School of Mathematical Sciences, Beihang University, Beijing, China.

Frontiers in neuroscience

|May 15, 2024

概括

大型抑郁症 (MDD) 改变了大脑在感官和认知网络上的功能不对称性. 这些大脑不对称性变化与认知功能有关,并预测抑郁症状的严重程度.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
精神病学是一个精神病学.

背景情况:

大型抑郁症 (MDD) 的特点是感官和认知障碍.
以前的研究表明,MDD中大脑不对称性发生变化,包括异常的横向化和连接性.
MDD对大脑层次组织中的功能不对称的影响仍然不清楚.

研究的目的:

调查MDD中半球内和半球间功能不对称的变化.
为了检查这些不对称性在前三个功能梯度,代表层次组织.
了解MDD如何影响系统级大脑架构.

主要方法:

对前三种功能梯度的半球内和半球间不对称性的分析.
单模转模,视觉-体感和体运动/默认模式-多重需求等级的表征.
使用弹性网模型来评估不对称特征对抑郁特征的预测能力.

主要成果:

患有MDD的患者在初级感官 (例如视觉) 和跨模态关联区域 (例如默认模式) 中表现出改变的不对称性.
在多个功能梯度中观察到异常,与头脑,记忆和视觉处理有关.
半球内部和半球间的不对称特征预测了抑郁特征 (BDI-II分数).

结论:

MDD对功能梯度不对称产生广泛和混合的影响.
这些发现增强了对MDD神经生物学基础的理解.
在MDD中改变的大脑不对称性会影响感官处理,认知功能和整体的大脑结构.

关键词:

大脑网络大脑网络功能梯度梯度是一个函数式梯度梯度.半球半球不对称性大型抑郁症主要是抑郁症.静止状态的fMRI进行.

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