Table 1.
Description of features.
| Feature | Description |
|---|---|
| Delta (δ) | Power of 0.5–4 Hz band in EEG calculated from Welch periodogram |
| Theta (θ) | Power of 7–10 Hz band in EEG |
| Sigma (σ) | Power of 11–15 Hz band in EEG |
| Beta (β) | Power of 15–40 Hz band in EEG |
| Theta/Delta | Ratio of Theta to Delta |
| Sigma/Delta | Ratio of Sigma to Delta |
| Beta/Delta | Ratio of Beta to Delta |
| Sigma/Theta | Ratio of Sigma to Theta |
| Beta/Theta | Ratio of Beta to Theta |
| Beta/Sigma | Ratio of Beta to Sigma |
| EEG RMS | Root mean square (RMS) of EEG |
| EMG RMS | Mean of RMS of Neck and Mass. EMG |
| EEG Entropy | Spectral entropy of EEG |
| EMG Entropy | Mean of spectral entropies of Neck and Masseter EMG |
| EMG 95%ile Mean | Mean of the top 5% samples in Neck and Masseter EMG |
| EMG Twitch | Sum of variances above the median in Neck and Massester EMG. Epochs are subdivided into 10 subepochs to calculate variances. |