Figure 7. Electrical stimulation of DA neurone afferents fails to evoke any glycinergic IPSCs.

Evoked IPSCs obtained in DA neurones recorded in neonatal (A) and juvenile rats (B). In the presence of glutamatergic antagonists (50 μmdl-APV + 10 μm CNQX), note that the addition of a GABA_A antagonist (1 μm gabazine) inhibited the evoked IPSCs. Subsequent addition of strychnine (1 μm) had little effect on the remaining current (approximately 5 pA, lower traces). Traces were digitized at 10 kHz and filtered at 1 kHz. Lower traces are a magnification of upper traces (V_H / −70 mV).