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arXiv 2301.01243q-bio.NCnlin.AOphysics.bio-ph
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人脑的全局兴奋性与网络结构

Global excitability and network structure in the human brain

Youssef Kora, Salma Salhi, Jörn Davidsen, Christoph Simon

AI总结:

本研究利用Wilson-Cowan振荡器模型仿真基于人类连接组的脑网络自发动力学,探究脑结构-功能关系,发现脑网络拓扑可在低布线成本与强功能间平衡,且具备非活跃到全局兴奋的强转变能力。

摘要:

我们利用Wilson-Cowan振荡器模型,通过对基于人类连接组数据生成的脑网络自发动力学进行仿真,来研究人脑的结构-功能关系。这使我们能够针对多名个体受试者的两种不同规模的连接组,建立此类网络的全局兴奋性与全局结构网络参量之间的关系。我们比较了生物网络与打乱网络之间这类相关性的定性表现,后者通过打乱前者的成对连接同时保留其连接分布生成。我们的结果表明,大脑具有在低网络布线成本与强功能之间实现平衡的显著倾向,并凸显了脑网络拓扑结构具备从非活跃状态向全局兴奋状态发生强烈转变的独特能力。

英文摘要:

We utilize a model of Wilson-Cowan oscillators to investigate structure-function relationships in the human brain by means of simulations of the spontaneous dynamics of brain networks generated through human connectome data. This allows us to establish relationships between the global excitability of such networks and global structural network quantities for connectomes of two different sizes for a number of individual subjects. We compare the qualitative behavior of such correlations between biological networks and shuffled networks, the latter generated by shuffling the pairwise connectivities of the former while preserving their distribution. Our results point towards a remarkable propensity of the brain's to achieve a trade-off between low network wiring cost and strong functionality, and highlight the unique capacity of brain network topologies to exhibit a strong transition from an inactive state to a globally excited one.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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