| ISI | Inter-Stimulus Interval |
| MAD | Median Absolute Deviation |
| MFEI | Multiscale Fuzzy Entropy Index |
| MSEI | Multiscale Sample Entropy Index |
| PSD | Power Spectral Density |
| RT | Reaction Time |
| SaEn | Sample Entropy |
| tDCS | Transcranial Direct Current Stimulation |
| tES | Transcranial Electrical Stimulation |
| TNR | True Negative Rate |
| TPR | True Positive Rate |
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