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最小意识状态 (MCS) 患者视觉皮层网络的功能连接性和图形拓特性

Zina Li¹, Jichan Nian², Shuiyan Li²

¹Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Guangzhou, Guangdong Province 510631, China; School of Psychology, Center for Studies of Psychological Application, Guangdong Key Laboratory of Mental Health and Cognitive Science, and the South China Normal University, Guangzhou, Guangdong Province 510631, China; Philosophy and Social Science Laboratory of Reading and Development in Children and Adolescents (South China Normal University), Ministry of Education, Guangzhou, Guangdong Province 510631, China.

|December 22, 2025

概括

研究人员研究了患有最小意识状态 (MCS) 的患者的视觉网络. 他们发现半球间连接性下降,但保留了半球内连接,突出显示V1.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
神经学神经学

背景情况:

最小意识状态 (MCS) 是脑损伤后的关键过渡状态,显示最小的意识.
评估视觉功能对于MCS诊断和康复至关重要,因为视觉是主要的感官输入.
之前的研究对视觉网络作为一个整体进行了研究,缺乏有关特定受影响地区的细节.

研究的目的:

研究MCS患者视觉皮质网络的功能连接和拓性质.
确定在MCS中受影响或保留的特定视觉皮层子区域.
为MCS的视觉康复策略和认知功能评估提供见解.

主要方法:

对38个视觉皮层子区域的分析,从初级视觉皮层 (V1) 到更高层次的视觉区域.
应用基于无门网络的统计分析来评估连接性.
利用基于图形和节点的分析来评估网络集成和枢纽的重要性.

主要成果:

在MCS患者的视觉网络中,半球间连接性显著下降.
在MCS患者的视觉网络中,在很大程度上保留了内半球连接.
全球整合受损,以较长的特征路径长度表示;V1被确定为关键枢纽.

结论:

患有MCS的患者在视觉皮层网络连接方面表现出明显的变化,半球间联系减少.
初级视觉皮层 (V1) 在MCS患者的信息传输中,与健康对照人群相比,在信息传输中起着更为关键的作用.
这些发现有助于选择用于康复的视觉刺激,并评估MCS患者的认知功能.

关键词:

意识的障碍意识的障碍功能连接性的功能连接性.功能性磁共振成像技术功能性磁共振成像技术图形理论是指图形的理论.最小意识状态 (MCS) 是指最小意识状态.视觉皮层网络视觉皮层网络

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