Onset of Phase Synchronization in Neurons Conneted via Chemical Synapses

TL;DR

This paper investigates how chaotic neurons connected by inhibitory chemical synapses transition to synchronized states, revealing that increasing synaptic strength leads to periodic, but not fully synchronized, neuronal behavior.

Contribution

It demonstrates the conditions under which chaotic neurons exhibit phase synchronization and how increased synaptic strength results in periodic states without complete synchronization.

Findings

Chaotic neurons can synchronize in phase despite non-coherent dynamics.

Increasing synaptic strength induces a transition from chaos to periodicity.

No evidence of chaotic complete synchronization at higher synaptic strengths.

Abstract

We study the onset of synchronous states in realistic chaotic neurons coupled by mutually inhibitory chemical synapses. For the realistic parameters, namely the synaptic strength and the intrinsic current, this synapse introduces non-coherences in the neuronal dynamics, yet allowing for chaotic phase synchronization in a large range of parameters. As we increase the synaptic strength, the neurons undergo to a periodic state, and no chaotic complete synchronization is found.