| AMP | adenosine monophosphate |
| ANOVA | analysis of variance |
| AUC | area under curve |
| CNS | central nervous system |
| CRH | corticotropin-releasing hormone |
| CSF | cerebrospinal fluid |
| dATP | deoxyadenosine triphosphate |
| EDTA | ethylenediaminetetra-acetic acid |
| EEG | electroencephalography |
| EMG | electromyography |
| EOG | electro-oculography |
| GABA | gamma-aminobutyric acid |
| GH | growth hormone |
| GHRH | growth hormone-releasing hormone |
| GHRP | growth hormone-releasing peptide |
| GHS | growth hormone secretagogue |
| i.c.v. | intracerebroventricular |
| i.p. | intraperitoneal |
| i.v. | intravenous |
| IGF | insulin-like growth factor |
| mRNA | messenger ribonucleic acid |
| NPY | neuropeptide Y |
| p.o. | peroral |
| PBS | phosphate-buffered saline |
| PRL | prolactin |
| REM | rapid eye movement |
| s.c. | subcutaneous |
| SSC | saline-sodium citrate |
| SSR | somatostatin receptor |
| SWS | slow wave sleep |
| TED | tris-EDTA-dithiothreitol |
| tRNA | transfer ribonucleic acid |
| TSH | thyroid stimulating hormone |
| VIP | vasoactive intestinal peptide |