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Noise driven broadening of the neural synchronisation transition in stage II retinal waves | | Dora Matzakos-Karvouniari
; Bruno Cessac
; L. Gil
; | | Date: |
9 Dec 2019 | | 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. | | Source: | arXiv, 1912.3934 | | Services: | Forum | Review | PDF | Favorites | |
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