Table 1. Basal Extracellular Concentrations (nM): Anesthetized Rats.

	cortex	corpus callosum	striatuma
DA	0.4 ± 0.1	0.4 ± 0.1	1.7 ± 0.2***
DOPAC	47 ± 12	44 ± 11	55 ± 18
3-MT	0.08 ± 0.01	0.10 ± 0.00	0.35 ± 0.02***
HVA	36 ± 8	29 ± 7	31 ± 13
5-HT	0.4 ± 0.1	0.4 ± 0.2	0.2 ± 0.1
5-HIAA	43 ± 15	31 ± 14	24 ± 9
NE	0.8 ± 0.3	1.1 ± 0.3	0.5 ± 0.1
NM	0.2 ± 0.1	0.1 ± 0.0	0.1 ± 0.1
Glu	2600 ± 700	1300 ± 300	1100 ± 200
Asp	590 ± 300	350 ± 30	640 ± 260
GABA	44 ± 11	43 ± 6	39 ± 4
Gly	5400 ± 1500	3200 ± 700	4400 ± 400
Ach	31 ± 2	28 ± 5	42 ± 10

^a***p < 0.001, one-way ANOVA with Tukey’s multiple comparisons test versus both the corpus callosum and cortex.