A model of the neural dynamics is proposed based on phase-locked loop system with delayed feedback. The model is able to demonstrate chaotic oscillatory regimes, which have typical for neural activity switching between qualitatively different types of oscillations.
We developed a radioengineering circuit modeling a hierarchically organized thalamo-cortical network of the brain with an external input. We investigated the resulting model and found various regimes of forced and self-oscillations, including regimes with hard excitation. We established at what parameters the circuit demonstrates activity similar to spike-wave discharges at absence epilepsy, implementing the hypothesis that a spike-wave discharge is a long transient process near the bifurcation of the cycle birth from the condensation of phase trajectories.
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