Development of intrinsic burst generation in identified neuron R15 of Aplysia

The development of endogenous bursting pattern of identified neuron R15 of Aplysia was studied, in animals ranging from juveniles weighing 27 mg to adult animals weighing 350 g. In the youngest animals studied, R15 only fires irregularly, somewhat later it begins firing in brief bursts, and only in early adulthood does its characteristic burst firing pattern.