2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147348It is demonstrated, by means of analogue electronic simulation and theoretically, that external noise can markedly change the character of the response of a nonlinear system to a low-frequency periodic field. In general, noise of sufficient intensity {\it linearises} the response. For certain parameter ranges in particular cases, however, an increase in the noise intensity can sometime have the opposite effect and is shown to {\it delinearise} the response. The physical origins of these contrary behaviours are discussed.17 pages. No special macros. Figures on requestChaotic DynamicsAdaptation and Self-Organizing Systemstext