Cascades and cognitive state: focused attention incurs subcritical dynamics

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Erik D FagerholmRobert Leech

Abstract

The analysis of neuronal avalanches supports the hypothesis that the human cortex operates with critical neural dynamics. Here, we investigate the relationship between cascades of activity in electroencephalogram data, cognitive state, and reaction time in humans using a multimodal approach. We recruited 18 healthy volunteers for the acquisition of simultaneous electroencephalogram and functional magnetic resonance imaging during both rest and during a visuomotor cognitive task. We compared distributions of electroencephalogram-derived cascades to reference power laws for task and rest conditions. We then explored the large-scale spatial correspondence of these cascades in the simultaneously acquired functional magnetic resonance imaging data. Furthermore, we investigated whether individual variability in reaction times is associated with the amount of deviation from power law form. We found that while resting state cascades are associated with approximate power law form, the task state is associated with subcritical dynamics. Furthermore, we found that electroencephalogram cascades are related to blood oxygen level-dependent activation, predominantly in sensorimotor brain regions. Finally, we found that decreased reaction time...Continue Reading

Citations

Jan 18, 2016·NeuroImage·Robert Ton, Andreas Daffertshofer
May 8, 2015·The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry·Rodrigo M Braga, Robert Leech
May 5, 2017·PloS One·Leila FakhraeiWoodrow L Shew
Oct 30, 2019·Scandinavian Journal of Pain·Lars-Petter Granan
Dec 28, 2019·Brain Sciences·Soheil KeshmiriHiroshi Ishiguro
Dec 1, 2019·Scientific Reports·Soheil KeshmiriHiroshi Ishiguro
Sep 17, 2020·Journal of Neurophysiology·Zhengyu MaRalf Wessel
Jun 19, 2018·Network Neuroscience·Taylor BoltLucina Q Uddin
May 26, 2017·PLoS Computational Biology·Gerald HahnYves Frégnac
Jun 10, 2020·Scientific Reports·Hilgo BruiningKlaus Linkenkaer-Hansen
Jan 9, 2019·Frontiers in Neuroscience·Kartik K Iyer
Sep 29, 2020·Frontiers in Neural Circuits·Vincent Zimmern
Dec 9, 2020·Entropy·Soheil Keshmiri
Mar 20, 2018·Neuropharmacology·Robin L Carhart-Harris
May 7, 2021·Oxidative Medicine and Cellular Longevity·Yu LeiYing Mao

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