Augmenting EEG-global-coherence with auditory and visual noise: Multisensory internal stochastic resonance

Medicine
Ignacio Méndez-BalbuenaElías Manjarrez

Abstract

The present investigation documents the electrophysiological occurrence of multisensory internal stochastic resonance (MISR) in the human electroencephalographic (EEG) coherence elicited by auditory and visual noise.We define MISR of EEG coherence as the phenomenon for which an intermediate level of input noise of a sensory modality enhances EEG coherence in response to another noisy sensory modality. Here, EEG coherence is computed by the global weighted coherence (GWC), modulated by quasi-Brownian noise. Specifically, we examined whether a particular level of auditory noise together with constant visual noise (experimental condition 1) and a specified level of visual noise together with constant auditory noise (experimental condition 2), improves EEG's GWC. We compared GWC between ongoing EEG basal activity (BA), zero noise (ZN), optimal noise (ON), and high noise (HN).The data disclosed an intermediate level of input noise that enhances the GWC for the majority of the subjects, thus demonstrating for the first time the occurrence of multisensory internal stochastic resonance (SR) in visuoauditory processing within the central nervous system.

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Citations

May 6, 2019·Journal of Neural Engineering·Shangen Zhang, Xiaorong Gao
Oct 2, 2019·Frontiers in Integrative Neuroscience·Patrick Bruns
Apr 30, 2020·Brain Topography·N HuidobroE Manjarrez
Dec 5, 2019·Frontiers in Integrative Neuroscience·Beth PfeifferChengshi Shui

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