| EEG | Electroencephalogram, electroencephalography |
| GABA | Gamma-aminobutyric acid |
| LOR | Loss of response |
| ROR | Recovery of response |
| CD | Correlation dimension |
| ERR | Ellipse radius ratio |
| N2O | Nitrous oxide |
| High-Remi | Highest blood concentration of remifentanil |
| BIS | Bispectral index |
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