Network motifs in talamocortical system model responsible for delta-rhythm generation

Anton A. Kapustnikov, Ilya V. Sysoev and Marina V. Sysoeva

Chaos, Solitons & Fractals, 2025, vol. 200, issue P3

Abstract: In this paper we propose a number of network motifs to describe the process of delta-rhythm generation in the thalamocortical system of mammals. The consideration is based on proven biophysical models for neurons of four different types and anatomically allowed connections between them. Following physiological principles, the neurons were set in the subthreshold excitable regime (stable focus), with generation taking place in response to external periodical driving from a cortical neuron with a main frequency in a high-gamma band. We found small motifs composed both of excitatory and inhibitory cells of both neocortex and thalamus which convert this driving into slow 3 Hz frequency bursts. The study may be considered as a model verification of the fact that the delta-rhythm in the thalamocortical system is a network phenomenon and both thalamus and cortex, both inhibitory and excitatory cells are necessary for it to appear.

Keywords: Network motifs; Thalamocortical system; Frequency translator; Delta-rhythm; Signal transmission (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:200:y:2025:i:p3:s096007792501094x

DOI: 10.1016/j.chaos.2025.117081

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