The development of GABAergic interneurons involves a complex process of proliferation, migration, differentiation, and maturation. These interneurons originate from specific progenitor zones in the embryonic brain, such as the medial ganglionic eminence (MGE) and caudal ganglionic eminence (CGE). They then migrate to their final destinations in the cortex, where they integrate into the existing neuronal circuits and mature into functional inhibitory neurons.