Journal ArticleDOI
The criticality hypothesis: how local cortical networks might optimize information processing
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In this paper, the authors review recent experiments on networks of cortical neurons, showing that they appear to be operating near the critical point in a phase transition between total randomness and boring order, and suggest that criticality may allow cortical networks to optimize information processing.Abstract:
Early theoretical and simulation work independently undertaken by Packard, Langton and Kauffman suggested that adaptability and computational power would be optimized in systems at the ‘edge of chaos’, at a critical point in a phase transition between total randomness and boring order. This provocative hypothesis has received much attention, but biological experiments supporting it have been relatively few. Here, we review recent experiments on networks of cortical neurons, showing that they appear to be operating near the critical point. Simulation studies capture the main features of these data and suggest that criticality may allow cortical networks to optimize information processing. These simulations lead to predictions that could be tested in the near future, possibly providing further experimental evidence for the criticality hypothesis.read more
Citations
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Journal ArticleDOI
The economy of brain network organization
Edward T. Bullmore,Olaf Sporns +1 more
TL;DR: It is proposed that brain organization is shaped by an economic trade-off between minimizing costs and allowing the emergence of adaptively valuable topological patterns of anatomical or functional connectivity between multiple neuronal populations.
Journal ArticleDOI
Spike avalanches in vivo suggest a driven, slightly subcritical brain state
Viola Priesemann,Michael Wibral,Michael Wibral,Mario Valderrama,Robert Pröpper,Michel Le Van Quyen,Theo Geisel,Jochen Triesch,Danko Nikolić,Matthias H. J. Munk +9 more
TL;DR: The results suggest that neural activity in vivo shows a mélange of avalanches, and not temporally separated ones, and that their global activity propagation can be approximated by the principle that one spike on average triggers a little less than one spike in the next step.
Journal ArticleDOI
Are biological systems poised at criticality
TL;DR: This work reviews the surprising successes of this “inverse” approach to statistical mechanics models of biological systems directly from real data, using examples from families of proteins, networks of neurons, and flocks of birds.
Journal ArticleDOI
Broadband criticality of human brain network synchronization.
Manfred G. Kitzbichler,Marie L. Smith,Søren Christensen,Edward T. Bullmore,Edward T. Bullmore +4 more
TL;DR: It is suggested that human brain functional systems exist in an endogenous state of dynamical criticality, characterized by a greater than random probability of both prolonged periods of phase-locking and occurrence of large rapid changes in the state of global synchronization, analogous to the neuronal “avalanches” previously described in cellular systems.
Journal ArticleDOI
Are biological systems poised at criticality
TL;DR: In the past few years, new, larger scale experiments have made it possible to construct statistical mechanics models of biological systems directly from real data as discussed by the authors, and the surprising successes of this "inverse" approach, using examples from families of proteins, networks of neurons, and flocks of birds.
References
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Book
Phase Transitions and Critical Phenomena
TL;DR: The field of phase transitions and critical phenomena continues to be active in research, producing a steady stream of interesting and fruitful results as discussed by the authors, and the major aim of this serial is to provide review articles that can serve as standard references for research workers in the field.
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Introduction to percolation theory
Dietrich Stauffer,Amnon Aharony +1 more
TL;DR: In this paper, a scaling solution for the Bethe lattice is proposed for cluster numbers and a scaling assumption for cluster number scaling assumptions for cluster radius and fractal dimension is proposed.
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The Origins of Order: Self-Organization and Selection in Evolution
TL;DR: The structure of rugged fitness landscapes and the structure of adaptive landscapes underlying protein evolution, and the architecture of genetic regulatory circuits and its evolution.
Book
Introduction to percolation theory
Dietrich Stauffer,Amnon Aharony +1 more
TL;DR: In this article, a scaling solution for the Bethe lattice is proposed for cluster numbers and a scaling assumption for cluster number scaling assumptions for cluster radius and fractal dimension is proposed.
Journal ArticleDOI
Self-organized criticality: An explanation of the 1/ f noise
TL;DR: It is shown that dynamical systems with spatial degrees of freedom naturally evolve into a self-organized critical point, and flicker noise, or 1/f noise, can be identified with the dynamics of the critical state.