| AcS | Shell region of the nucleus accumbens |
| DCS | d-Cycloserine |
| dlST | Dorsolateral striatum |
| EPS | Extrapyramidal side effects |
| HAL | Haloperidol |
| IR | Immunoreactivity |
| L-NAME | L-NG-Nitro-l-arginine methyl ester |
| NMDA | N-Methyl-d-aspartate |
| NOS | Nitric oxide synthase |
| SNc | Substantia nigra pars compacta |