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Interaction of CBC Loops Involved in Working Memory Feedback Training

机译：CBC循环的相互作用涉及工作记忆反馈训练

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Neuroimaging studies of cognitive learning have identified the important roles of Cortico-Basal ganglia- Cerebellar (CBC) loops, and the neurofeedback training based on real-time functional magnetic resonance imaging (rt-fMRI) has been deemed as a kind of cognitive learning. However, how the connectivity in CBC loops change during the feedback training and the underlying learning mechanism behind the training both remain unclear. In this paper, we firstly used Granger causality model method to construct CBC loops in a working memory feedback training task by rt-fMRI. Then, we examined the interaction changes in CBC loops induced the training. The results showed that the connectivity of fronto- parietal, cortico-basal ganglia (BG) and cortico-cerebellar in CBC loops were significantly enhanced during the training in the experimental group. Further correlation analysis indicated the connectivity changes of cortico-BG were stronger positively correlated with the behavioral improvements. These findings suggest that the interaction between the cortex and BG in the feedback training is an essential factor to the behavioral improvement which makes the individual to complete cognitive learning better.
机译：认知学习的神经影像学研究已经确定了皮质-基底神经节-小脑（CBC）回路的重要作用，基于实时功能磁共振成像（rt-fMRI）的神经反馈训练被视为一种认知学习。然而，在反馈训练期间，CBC循环的连通性如何变化，训练背后的基本学习机制都还不清楚。在本文中，我们首先使用Granger因果模型方法通过rt-fMRI在工作记忆反馈训练任务中构建CBC循环。然后，我们检查了CBC回路中交互作用的变化，从而诱导了训练。结果表明，在实验组的训练过程中，CBC环中的额顶叶，皮质基底神经节（BG）和皮质小脑的连通性显着增强。进一步的相关分析表明，皮质-BG的连通性变化与行为改善呈正相关。这些发现表明，在反馈训练中皮层和BG之间的相互作用是行为改善的重要因素，行为改善使个人更好地完成认知学习。

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