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  Sources of linear and non-linear synchrony between brain and muscles: Linear and non-linear CMC sources

Vidaurre, C., Gómez, M., Nolte, G., Villringer, A., von Carlowitz-Ghori, K., & Nikulin, V. V. (2020). Sources of linear and non-linear synchrony between brain and muscles: Linear and non-linear CMC sources. In Proceedings of the 8th International Winter Conference on Brain-Computer Interface (BCI). doi:10.1109/BCI48061.2020.9061667.

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 Creators:
Vidaurre, Carmen1, Author
Gómez, Marisol2, Author
Nolte, Guido3, Author
Villringer, Arno4, Author              
von Carlowitz-Ghori, Katherina5, Author
Nikulin, Vadim V.6, Author              
Affiliations:
1TU Berlin, Germany, ou_persistent22              
2Public University of Navarre, Spain, ou_persistent22              
3University Medical Center Hamburg-Eppendorf, Germany, ou_persistent22              
4Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
5Charité University Medicine Berlin, Germany, ou_persistent22              
6National Research University Higher School of Economics, Moscow, Russia, ou_persistent22              

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Free keywords: Linear interactions; Non-linear interactions; Cortico-muscular coherence; Brain activity; Muscular activity
 Abstract: This manuscript shows that it is possible to find distinct sources of brain activity, at similar frequencies, arising from linear and non-linear interactions of the brain with the muscular system. Those sources were obtained by maximizing coherence between multivariate signals recorded from brain and a single channel from the muscles. To find linear phase synchrony we used unrectified electromyographic recordings, whereas to de-mix nonlinear sources, we used rectified muscular measurements. In order to obtain the brain sources, we employed a recently published method called “cacoh”” that is able to maximize coherence over the complete frequency range of interest and simultaneously find patterns of sources for each them. Our results show that cortico- muscular interactions even at the same frequency range can have spatially distinct neuronal sources depending on whether interactions had linear or non-linear character.

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Language(s): eng - English
 Dates: 2020-04-09
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1109/BCI48061.2020.9061667
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Title: Proceedings of the 8th International Winter Conference on Brain-Computer Interface (BCI)
Source Genre: Proceedings
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