NMDARs are a prerequisite for evoking long-lasting bursts in SGS non-GABAergic neurons. Inset, Schematic showing the arrangement of recording and stimulating electrodes and puff pipette for application of APV (5 mm). A, In the presence of gabazine, SGS stimulation evoked bursts in an SGS non-GABAergic neuron. B, Addition of CGP greatly prolonged burst duration. C, Local puff application of APV (5 psi, 300 ms) profoundly inhibited the bursts.