Table 1 Key Algorithms Employed in GEMS and Quantitative Validation References
Algorithm | Function | Validated In: |
|---|---|---|
Filtering: moving median, wavelet, Butterworth and Savitsky-Golay filters | Reduce baseline drift and high-frequency noise from signals. | Paskaranandavadivel 2011 [21] |
Falling-Edge Variable Threshold (FEVT) | Automated marking of slow wave activation times | Erickson et al. 2010 [13] |
Region-GRowing Using Polynomial-surface- estimate Stabilization (REGROUPS) | Automated clustering (grouping) of slow wave activation times into discrete cycles | Erickson et al. 2011 [14] |
Spatial Visualization and Interpolation (SIV) Scheme | Automated interpolation and graphing of isochronal maps of slow wave propagation patterns | Erickson et al. 2011 [14] |
Amplitude Estimation by Peak-Trough Zero-Crossings Scheme | Automated estimation of extracellular amplitudes | Paskaranandavadivel 2011 [21] |
Velocity Estimation by Smoothed Finite Difference Scheme | Automated estimation of velocity fields for slow wave propagation maps | Paskaranandavadivel 2012 [15] |
Amplitude and Velocity Field Visualization Schemes | Automated graphing of spatial data on amplitude and propagation velocity |