Disrupted Effective Connectivity within the Fronto-Thalamic Circuit in Pontine Infarction: A Spectral Dynamic Causal Modeling Study

被引:2
作者
Chen, Huiyou [1 ]
Mao, Qianqian [1 ]
Zhang, Yujie [1 ]
Shi, Mengye [1 ]
Geng, Wen [1 ]
Ma, Yuehu [1 ]
Chen, Yuchen [1 ]
Yin, Xindao [1 ]
机构
[1] Nanjing Med Univ, Nanjing Hosp 1, Dept Radiol, Nanjing 210006, Peoples R China
关键词
pontine stroke; resting-state functional magnetic resonance imaging; dynamic causal modeling; effective connectivity; fronto-thalamic circuit;
D O I
10.3390/brainsci14010045
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
This study aims to investigate alterations in effective connectivity (EC) within the fronto-thalamic circuit and their associations with motor and cognitive declines in pontine infarction (PI). A total of 33 right PI patients (RPIs), 38 left PI patients (LPIs), and 67 healthy controls (HCs) were recruited. The spectral dynamic causal modeling (spDCM) approach was used for EC analysis within the fronto-thalamic circuit, including the thalamus, caudate, supplementary motor area (SMA), medial prefrontal cortex (mPFC), and anterior cingulate cortex (ACC). The EC differences between different sides of the patients and HCs were assessed, and their correlations with motor and cognitive dysfunctions were analyzed. The LPIs showed increased EC from the mPFC to the R-SMA and decreased EC from the L-thalamus to the ACC, the L-SMA to the R-SMA, the R-caudate to the R-thalamus, and the R-thalamus to the ACC. For RPIs, the EC of the R-caudate to the mPFC, the L-thalamus and L-caudate to the L-SMA, and the L-caudate to the ACC increased obviously, while a lower EC strength was shown from the L-thalamus to the mPFC, the LSMA to the R-caudate, and the R-SMA to the L-thalamus. The EC from the R-caudate to the mPFC was negatively correlated with the MoCA score for RPIs, and the EC from the R-caudate to the R-thalamus was negatively correlated with the FMA score for LPIs. The results demonstrated EC within the fronto-thalamic circuit in PI-related functional impairments and reveal its potential as a novel imaging marker.
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页数:13
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