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Multiscale criticality measures as general-purpose gauges of proper brain function

Authors
  • Fekete, Tomer1, 1, 2
  • Hinrichs, Hermann2, 3
  • Sitt, Jacobo Diego4, 5
  • Heinze, Hans-Jochen2, 3
  • Shriki, Oren1, 1, 1
  • 1 Ben-Gurion University of the Negev, Be’er Sheva, Israel , Be’er Sheva (Israel)
  • 2 Leibniz Institute for Neurobiology, Magdeburg, Germany , Magdeburg (Germany)
  • 3 Otto-von-Guericke University, Magdeburg, Germany , Magdeburg (Germany)
  • 4 INSERM, U 1127, Paris, France , Paris (France)
  • 5 Hôpital Pitié-Salpêtrière, Paris, France , Paris (France)
Type
Published Article
Journal
Scientific Reports
Publisher
Springer Nature
Publication Date
Jul 14, 2021
Volume
11
Issue
1
Identifiers
DOI: 10.1038/s41598-021-93880-8
Source
Springer Nature
Disciplines
  • article
License
Green

Abstract

The brain is universally regarded as a system for processing information. If so, any behavioral or cognitive dysfunction should lend itself to depiction in terms of information processing deficiencies. Information is characterized by recursive, hierarchical complexity. The brain accommodates this complexity by a hierarchy of large/slow and small/fast spatiotemporal loops of activity. Thus, successful information processing hinges upon tightly regulating the spatiotemporal makeup of activity, to optimally match the underlying multiscale delay structure of such hierarchical networks. Reduced capacity for information processing will then be expressed as deviance from this requisite multiscale character of spatiotemporal activity. This deviance is captured by a general family of multiscale criticality measures (MsCr). MsCr measures reflect the behavior of conventional criticality measures (such as the branching parameter) across temporal scale. We applied MsCr to MEG and EEG data in several telling degraded information processing scenarios. Consistently with our previous modeling work, MsCr measures systematically varied with information processing capacity: MsCr fingerprints showed deviance in the four states of compromised information processing examined in this study, disorders of consciousness, mild cognitive impairment, schizophrenia and even during pre-ictal activity. MsCr measures might thus be able to serve as general gauges of information processing capacity and, therefore, as normative measures of brain health.

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