2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3298In this paper, I mention a few processes which may play a role in the evolution of the central regions of galaxies. In this context, I briefly discuss some issues regarding the formation of bulges in spirals, the role of supermassive black holes, and the importance of nuclear density waves.6 pages, 3 figures, to appear in the Proceedings of the SF2A 2001, Lyon, May 28- June 1st, EDP Conference Series in Astronomy and AstrophysicsAstrophysicstext