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- W4386977291 abstract "Real neurons connect to each other non-randomly. How the connectivity of networks of conductance-based neuron models like the classical Hodgkin-Huxley model, or the Morris-Lecar model, impacts synchronizability remains unknown. One powerful tool to resolve the synchronizability of these networks is the Master Stability Function (MSF). Here, we apply and extend the MSF approach to networks of Morris-Lecar neurons with conductance-based coupling to determine under which parameters and graphs synchronous solutions are stable. We consider connectivity graphs with a constant row-sum, where the MSF approach can be readily extended to conductance-based synapses rather than the more well-studied diffusive connectivity case, which primarily applies to gap junction connectivity. In this formulation, the synchronous solution is a single, self-coupled or 'autaptic' neuron. We find that the primary determining parameter for the stability of the synchronous solution is, unsurprisingly, the reversal potential, as it largely dictates the excitatory/inhibitory potential of a synaptic connection. However, the change between excitatory and inhibitory'' synapses is rapid, with only a few millivolts separating stability and instability of the synchronous state for most graphs. We also find that for specific coupling strengths (as measured by the global synaptic conductance), islands of synchronizability in the MSF can emerge for inhibitory connectivity. We verified the stability of these islands by direct simulation of pairs of neurons coupled with eigenvalues in the matching spectrum. These results were robust for different transitions to spiking (Hodgkin Class I vs Class II), which displayed very similar synchronizability characteristics." @default.
- W4386977291 created "2023-09-23" @default.
- W4386977291 creator A5016495848 @default.
- W4386977291 date "2023-09-20" @default.
- W4386977291 modified "2023-10-18" @default.
- W4386977291 title "Rapid Changes in Synchronizability in Conductance-based Neuronal Networks with Conductance-based Coupling" @default.
- W4386977291 doi "https://doi.org/10.48550/arxiv.2309.11586" @default.
- W4386977291 hasPublicationYear "2023" @default.
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