Table 2.

Extracellular concentrations (pg/μl) of dopamine, DOPAC, HVA, glutamate, GABA, 5-HT, DOPAC/DA, HVA/DA, and 5HIAA/5HT concentration ratios in the sensorimotor and associative-limbic striatum of normal monkeys (before MPTP injection), with statistical analysis

Neurotransmitter	Sensorimotor	Associative-limbic
DA	4.16 ± 0.71	1.01 ± 0.29**
DOPAC	10.71 ± 3.13	52.19 ± 19.02**
HVA	399.39 ± 56.24	782.96 ± 116.26**
5HT	0.17 ± 0.12	0.42 ± 0.19**
Glu	100.33 ± 35.85	161.01 ± 78*
GABA	4.49 ± 1.21	7.34 ± 2.19**
Ratio
DOPAC/DA	2.77 ± 0.85	41.13 ± 11.72**
HVA/DA	107.28 ± 18.95	622.63 ± 25.03**
5HIAA/5HT	713.95 ± 211.87	150.42 ± 39.92**

*p < 0.05; **p < 0.01.