213 citations · 631 across the 14 of their papers we have counts for
14 papers
Frequency-dependent covariance reveals critical spatio-temporal patterns of synchronized activity in the human brain
Rubén Calvo, Carles Martorell, Guillermo B. Morales +2
Recent analyses combining advanced theoretical techniques and high-quality data from thousands of simultaneously recorded neurons provide strong support for the hypothesis that neu…
Unveiling the intrinsic dynamics of biological and artificial neural networks: from criticality to optimal representations
Guillermo B. Morales, Serena Di Santo, Miguel A. Muñoz
Deciphering the underpinnings of the dynamical processes leading to information transmission, processing, and storing in the brain is a crucial challenge in neuroscience. An inspir…
Quasi-universal scaling in mouse-brain neuronal activity stems from edge-of-instability critical dynamics
Guillermo B. Morales, Serena Di Santo, Miguel A. Munoz
The brain is in a state of perpetual reverberant neural activity, even in the absence of specific tasks or stimuli. Shedding light on the origin and functional significance of such…
Feedback mechanisms for self-organization to the edge of a phase transition
Victor Buendía, Serena di Santo, Juan A. Bonachela +1
Scale-free outbursts of activity are commonly observed in physical, geological, and biological systems. The idea of self-organized criticality (SOC), introduced back in 1987 by Bak…
Self-organized bistability and its possible relevance for brain dynamics
Victor Buendía, Serena di Santo, Pablo Villegas +2
Self-organized bistability (SOB) is the counterpart of 'self-organized criticality' (SOC), for systems tuning themselves to the edge of bistability of a discontinuous phase transit…
Time-series thresholding and the definition of avalanche size
Pablo Villegas, Serena di Santo, Raffaella Burioni +1
Avalanches whose sizes and durations are distributed as power laws appear in many contexts. Here, we show that there is a hidden peril in thresholding continuous times series --eit…
Jensen's force and the statistical mechanics of cortical asynchronous states
Victor Buendía, Pablo Villegas, Serena di Santo +3
The cortex exhibits self-sustained highly-irregular activity even under resting conditions, whose origin and function need to be fully understood. It is believed that this can be d…
Non-normality, reactivity, and intrinsic stochasticity in neural dynamics: a non-equilibrium potential approach
Serena di Santo, Pablo Villegas, Raffaella Burioni +1
Intrinsic stochasticity can induce highly non-trivial effects on dynamical systems, including stochastic and coherence resonance, noise induced bistability, noise-induced oscillati…
Landau-Ginzburg theory of cortex dynamics: Scale-free avalanches emerge at the edge of synchronization
Serena di Santo, Pablo Villegas, Raffaella Burioni +1
Understanding the origin, nature, and functional significance of complex patterns of neural activity, as recorded by diverse electrophysiological and neuroimaging techniques, is a…
Neutral theory and scale-free neural dynamics
Matteo Martinello, Jorge Hidalgo, Serena di Santo +3
Avalanches of electrochemical activity in brain networks have been empirically reported to obey scale-invariant behavior --characterized by power-law distributions up to some upper…
A simple unified view of branching process statistics: random walks in balanced logarithmic potentials
Serena di Santo, Pablo Villegas, Rafaella Burioni +1
We revisit the problem of deriving the mean-field values of avalanche critical exponents in systems with absorbing states. These are well-known to coincide with those of an un-bias…
Self-Organized Bistability Associated With First-Order Phase Transitions
Serena di Santo, Raffaella Burioni, Alessandro Vezzani +1
Self-organized criticality elucidates the conditions under which physical and biological systems tune themselves to the edge of a second-order phase transition, with scale invarian…
A microscopic mechanism for self-organized quasi periodicity in random networks of non linear oscillators
Raffaella Burioni, Serena Di Santo, Matteo di Volo +1
Self-organized quasi periodicity is one of the most puzzling dynamical phases observed in systems of non linear coupled oscillators. The single dynamical units are not locked to th…
Scattering lengths and universality in superdiffusive Lévy materials
R. Burioni, S. di Santo, S. Lepri +1
We study the effects of scattering lengths on Lévy walks in quenched one-dimensional random and fractal quasi-lattices, with scatterers spaced according to a long-tailed distributi…