| Neurotransmitter | Involved in: |
|---|---|
| Acetylcholine (ACh) | Learning, memory, muscle movement |
| Dopamine | Arousal and mood states, thought processes, physical movement |
| Serotonin and Norepinephrine | Levels of arousal and mood, sleep, eating |
| GABA (main inhibitory neurotransmitter) | Lowering arousal and anxiety, regulating movement |
| Glutamate (main excitatory neurotransmitter) | Memory storage, pain perception, strokes, schizophrenia |
| Endorphins | Pain relief and feelings of pleasure |