Inferring collective dynamical states from widely unobserved systems

Jens Wilting and Viola Priesemann ()
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Jens Wilting: Max-Planck-Institute for Dynamics and Self-Organization
Viola Priesemann: Max-Planck-Institute for Dynamics and Self-Organization

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract When assessing spatially extended complex systems, one can rarely sample the states of all components. We show that this spatial subsampling typically leads to severe underestimation of the risk of instability in systems with propagating events. We derive a subsampling-invariant estimator, and demonstrate that it correctly infers the infectiousness of various diseases under subsampling, making it particularly useful in countries with unreliable case reports. In neuroscience, recordings are strongly limited by subsampling. Here, the subsampling-invariant estimator allows to revisit two prominent hypotheses about the brain’s collective spiking dynamics: asynchronous-irregular or critical. We identify consistently for rat, cat, and monkey a state that combines features of both and allows input to reverberate in the network for hundreds of milliseconds. Overall, owing to its ready applicability, the novel estimator paves the way to novel insight for the study of spatially extended dynamical systems.

Date: 2018
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DOI: 10.1038/s41467-018-04725-4

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