2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62539We derived explicit symbolic expressions for the first, second, and third Lyapunov coefficients of the complex focus of a planar system modelling activity of a neural network. The analysis of these expressions allowed us to obtain new results about the number and location of limit cycles in the model.10 pages, 2 figuresDynamical SystemsQuantitative Methodstext