Impact of Transcutaneous Auricular Vagus Nerve Stimulation on Large-Scale Functional Brain Networks: From Local to Global

被引:15
作者
Rings, Thorsten [1 ,2 ]
von Wrede, Randi [1 ]
Broehl, Timo [1 ,2 ]
Schach, Sophia [1 ]
Helmstaedter, Christoph [1 ]
Lehnertz, Klaus [1 ,2 ,3 ]
机构
[1] Univ Bonn, Med Ctr, Dept Epileptol, Bonn, Germany
[2] Univ Bonn, Helmholtz Inst Radiat & Nucl Phys, Bonn, Germany
[3] Univ Bonn, Interdisciplinary Ctr Complex Syst, Bonn, Germany
关键词
evolving functional brain network; brain stimulation; network reconfiguration; network characteristics; centrality; EEG; SYNCHRONIZATION; HUBS;
D O I
10.3389/fphys.2021.700261
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
Transcutaneous auricular vagus nerve stimulation (taVNS) is a novel non-invasive brain stimulation technique considered as a potential supplementary treatment option for a wide range of diseases. Although first promising findings were obtained so far, the exact mode of action of taVNS is not fully understood yet. We recently developed an examination schedule to probe for immediate taVNS-induced modifications of large-scale epileptic brain networks. With this schedule, we observed short-term taVNS to have a topology-modifying, robustness- and stability-enhancing immediate effect on large-scale functional brain networks from subjects with focal epilepsies. We here expand on this study and investigate the impact of short-term taVNS on various local and global characteristics of large-scale evolving functional brain networks from a group of 30 subjects with and without central nervous system diseases. Our findings point to differential, at first glance counterintuitive, taVNS-mediated alterations of local and global topological network characteristics that result in a reconfiguration of networks and a modification of their stability and robustness properties. We propose a model of a stimulation-related stretching and compression of evolving functional brain networks that may help to better understand the mode of action of taVNS.
引用
收藏
页数:10
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