Table 1.

Baseline neuropeptide levels (ng/mg) in 11 regions of control human brain samples (Mean ± SEM)

Brain Region	Dynorphin (DYN)	Metenkephalin (MENK)	Neuropeptide Y (NPY)	Neurotensin (NT)	Substance P (SP)
Caudate Nucleus	0.42 ±.06	7.42 ± 1.14	4.83 ± 0.41	0.12 ± .01	3.41 ± 0.31
Nucleus Accumbens	7.81 ± 1.13	12.83 ± 2.01	35.63 ± 2.52	1.16 ± 0.11	6.02 ± 0.42
Cortex 9	0.11 ± 0.01	1.54 ± 0.08	21.02 ± 3.30	0.07 ± 0.01	0.30 ± 0.02
Cortex 18	0.08 ± 0.01	1.02 ± 0.10	26.90 ± 1.67	0.08 ± 0.01	0.40 ± 0.03
Cortex 22 (Auditory Associative Cortex)	0.08 ± 0.01	12.14 ± 0.13	8.90 ± 0.55	0.033 ± 0.002	0.28 ± 0.02
Cortex 39 (Visual Cortex)	0.042 ± 0.003	7.12 ± 0.42	11.77 ± 0.78	0.081 ± 0.012	0.32 ±0.025
Nucleus Basalis	1.27 ± 0.21	4.70 ± 0.61	15.56 ± 2.33	1.28 ± 0.26	3.30 ± 0.34
Nucelus Lateralis (Thalamus)	0.027 ± 0.002	1.17 ± 0.11	0.97 ± 0.068	0.101 ± 0.011	0.148 ± 0.03
Medial Pulvinar Thalamus	0.035 ± 0.004	0.355 ± 0.050	1.20 ± 0.15	0.224 ± 0.038	0.962 ± 0.200
Putamen	0.363 ± 0.067	16.48 ± 2.78	12.43± 1.71	0.165 ± 0.029	2.84 ± 0.39
Substantia Innominata (Extended Amygdala)	2.45 ± 0.77	6.46 ± 0.57	17.61 ± 2.06	0.78 ± 0.16	3.96 ± 0.53