| LC | Locus Coeruleus |
| NA | Noradrenaline |
| NREM | Non-Rapid-Eye-Movement |
| REM | Rapid-Eye-Movement |
| DBH | Dopamine--Hydroxylase |
| MRI | Magnetic Resonance Imaging |
| 5HT | 5-hydroxytryptamine (or serotonin) |
| ACh | Acetylcholine |
| GRAB | G-Protein-Coupled-Receptor-Activation-Based |
| EEG | Electroencephalogram |
| VNS | Vagus Nerve Stimulation |
| AD | Alzheimer’s Disease |
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