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. 2002 Apr 1;540(Pt 1):119–128. doi: 10.1113/jphysiol.2001.013938

Figure 4. Dopamine selectively decreases the GABAB-mediated IPSP by a presynaptic mechanism leaving the GABAA IPSP unaffected.

Figure 4

A, dopamine (100 μm) reduces the GABAB IPSP without changing the membrane hyperpolarization caused by puffer applications of the GABAB agonist baclofen (300 μm, 10–20 p.s.i., 8–10 ms). B, lack of DA effects on the GABAA IPSP.