Noise driven broadening of the neural synchronisation transition in stage II retinal waves
arXiv:1912.03934
Abstract
Based on a biophysical model of retinal Starburst Amacrine Cell (SAC) \cite{karvouniari-gil-etal:19} we analyse here the dynamics of retinal waves, arising during the visual system development. Waves are induced by spontaneous bursting of SACs and their coupling via acetycholine. We show that, despite the acetylcholine coupling intensity has been experimentally observed to change during development \cite{zheng-lee-etal:04}, SACs retinal waves can nevertheless stay in a regime with power law distributions, reminiscent of a critical regime. Thus, this regime occurs on a range of coupling parameters instead of a single point as in usual phase transitions. We explain this phenomenon thanks to a coherence-resonance mechanism, where noise is responsible for the broadening of the critical coupling strength range.
References in corpus (11)
- Optimal Dynamical Range of Excitable Networks at Criticality
- Dynamical synapses causing self-organized criticality in neural networks
- Hysteresis, Avalanches, and Disorder Induced Critical Scaling: A Renormalization Group Approach
- Landau-Ginzburg theory of cortex dynamics: Scale-free avalanches emerge at the edge of synchronization
- Can power-law scaling and neuronal avalanches arise from stochastic dynamics?
- Mapping Self-Organized Criticality onto Criticality
- Growing Critical: Self-Organized Criticality in a Developing Neural System
- On Synchronization in a Lattice Model of Pulse-Coupled Oscillators
- Deterministic excitable media under Poisson drive: power law responses, spiral waves and dynamic range
- A reaction-diffusion model of cholinergic retinal waves
- Anomalous scaling and Lee-Yang zeroes in Self-Organized Criticality