2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/231391We develop a theory for the emergence of global firings in non-identical excitable systems subject to noise. Three different dynamical regimes arise: sub-threshold motion, where all elements remain confined near the fixed point; coherent pulsations, where a macroscopic fraction fire simultaneously; and incoherent pulsations, where units fire in a disordered fashion. We also show that the mechanism for global firing is generic: it arises from degradation of entrainment originated either by noise or by diversity.4 pages, 1 figureStatistical MechanicsDisordered Systems and Neural Networkstext