Abstract:
We consider a model of a circular network of neurons where the functioning of each
neuron is described by an equation with two delays. The model under study is a modification considered in the paper of Glyzin et al., where the model of a solitary
neuron is based on of the equation with one delay – the Hutchinson equation. We
construct discrete traveling waves, i.e., a periodic solution of the system such that
all components coincide with the same function shifted by a quantity that is multiple
of a certain parameter. To find this solution, we study an auxiliary
differential-difference equation of the Volterra type with three delays. For this
equation, for any natural $m$ and $n$, we establish the existence of a periodic
solution that contains $m$ packets, each of which contains $n$ bursts per period.
Keywords:differential equations with delays, circular system, discrete traveling waves, bursting cycle, periodic solutions, phenomenological model of a neuron.