| tDCS | Transcranial direct current stimulation |
| rTMS | Repetitive transcranial magnetic stimulation |
| SNP | Single nucleotide polymorphism |
| COMT | Catechol-O-methyltransferase |
| BDNF | Brain-derived neurotrophic factor |
| MEP | Motor-evoked potential |
| rMT | Resting motor threshold |
| MH-MEP | Mylohyoid MEP |
| SM-EMG | Submental-electromyography |