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

  • Carmen Vidaurre
  • , Marisol Gomez
  • , Guido Nolte
  • , Arno Villringer
  • , Katherina Von Carlowitz-Ghori
  • , Vadim V. Nikulin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publication8th International Winter Conference on Brain-Computer Interface, BCI 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728147079
DOIs
Publication statusPublished - Feb 2020
Externally publishedYes
Event8th International Winter Conference on Brain-Computer Interface, BCI 2020 - Gangwon, Korea, Republic of
Duration: 26 Feb 202028 Feb 2020

Publication series

Name8th International Winter Conference on Brain-Computer Interface, BCI 2020

Conference

Conference8th International Winter Conference on Brain-Computer Interface, BCI 2020
Country/TerritoryKorea, Republic of
CityGangwon
Period26/02/2028/02/20

Keywords

  • brain activity
  • cortico-muscular coherence
  • linear interactions
  • muscular activity
  • non-linear interactions

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