Table 1. Drugs used in this study.

Drug	Action	Concentration	Application method
L-AP4	Activates group III mGluRs	4 or 50 µM	Bath, puffer
BAPTA	Chelates Ca2+	10 mM	Intracellular
Cd2+	Blocks neurotransmitter release	1 mM	Bath
CGP 52432	Blocks GABAB receptors	5 µM	Bath
Concanavalin A	Blocks desensitization of kainate receptors	300 µg/ml	Bath
CPPG	Blocks group III mGluRs	200 or 600 µM	Bath, puffer
Cyclothiazide	Blocks desensitization of AMPA receptors	60 µM	Bath
Isradipine	Blocks L-type Ca2+ channels	10 µM	Bath, puffer
MK-801	Blocks NMDA receptors	1 mM	Intracellular
MMPIP	Blocks mGluR7	10 µM	Bath
NMDA	Activates NMDA receptors	5 mM	Puffer
Picrotoxin	Blocks GABAA receptors	100 or 200 µM	Bath, puffer
SCH 23390	Blocks D1-class dopamine receptors	60 nM	Bath (2–8 h)
Spiperone	Blocks D2-class dopamine receptors	60 nM	Bath (2–8 h)
Strychnine	Blocks glycine receptors	5 or 10 µM	Bath, puffer
TBOA	Blocks glutamate transporters	25 µM	Bath
TPMPA	Blocks GABAC receptors	15 or 30 µM	Bath, puffer