Table 1.
Summary of quantitative EEG features acquired for EEG reactivity assessment.
| Feature Domain | Quantitative EEG Features |
|---|---|
| Complexity/Entropy | Nonlinear Energy Operator (Mukhopadhyay and Ray, 1998); Hjorth Parameter (Activity; Mobility; Complexity) (Hjorth, 1970); Fractal Dimension (Lutzenberger et al., 1992); Singular Value Decomposition Entropy (Sabatini, 2000); Spectral Entropy (Zhang et al., 2001); State/Response Entropy (Lysakowski et al., 2009); Sample Entropy (Abasolo et al., 2006); Renyi Entropy (Kannathal et al., 2005); Shannon Entropy(Kannathal et al., 2005); Approximate Entropy (Liang et al., 2015); Permutation Entropy (Bandt and Pompe, 2002); Relative Entropy (Inouye et al., 1991); Kurtosis; Skewness |
| Amplitude | Root Mean Square Amplitude; Mean of Amplitude Modulation; Standard Deviation of Amplitude Modulation; Skewness of Amplitude Modulation; Kurtosis of Amplitude Modulation; Mean of Amplitude Modulation (Stevenson et al., 2013); Burst Suppression Ratio (Nagaraj et al., 2018) |
| Frequency | Band Power: Delta (0.5-4 Hz), Theta (4-8 Hz), Alpha (8-12 Hz), Spindle (12-16 Hz), and Beta (16-25 Hz) Band Power; Total Power (0.5-32 Hz) Band Power Normalized by Total Power: Delta (0.5-4 Hz), Theta (4-8 Hz), Alpha (8-12 Hz), Beta (16-25 Hz) Band Power Ratios: Theta/Delta, Alpha/Delta, Spindle/Delta, Beta/Delta, Alpha/Theta, Spindle/Theta, and Beta/Theta Brain Symmetry Index (BSI) (van Putten et al., 2004): BSI total; BSI alpha; BSI delta; BSI theta; BSI beta (12-17 Hz); BSI beta (18Hz); BSI delta and alpha combined; BSI delta, theta, and alpha combined Two Group Test (TGT) (Bokil et al., 2007): TGT total; TGT alpha; TGT delta; TGT theta; TGT beta (12-17 Hz); TGT beta (18 Hz); TGT delta and alpha combined; TGT delta, theta, and alpha combined Standard Deviation of Frequency Modulation; Skewness of Frequency Modulation; Kurtosis of Frequency Modulation (Stevenson et al., 2013); Kolmogorov-Smirnov (spectral distribution) (McEwen and Anderson, 1975); Spectral Edge Frequency; Peak Frequency |
References are listed in the Supplementary Material 1.