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arXiv · 2311.06159

Discrete synaptic events induce global oscillations in balanced neural networks

Denis S. Goldobin·Matteo di Volo·Alessandro Torcini
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Abstract

Neural dynamics is triggered by discrete synaptic inputs of finite amplitude. However, the neural response is usually obtained within the diffusion approximation (DA) representing the synaptic inputs as Gaussian noise. We derive a mean-field formalism encompassing synaptic shot-noise for sparse balanced networks of spiking neurons. For low (high) external drives (synaptic strengths) irregular global oscillations emerge via continuous and hysteretic transitions, correctly predicted by our approach, but not from the DA. These oscillations display frequencies in biologically relevant bands.

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Denis S. Goldobin, Matteo di Volo, Alessandro Torcini. 2023-11-10. Discrete synaptic events induce global oscillations in balanced neural networks. https://doi.org/10.1103/physrevlett.133.238401

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