Novel Burst Suppression Segmentation in the Joint Time-Frequency Domain for EEG in Treatment of Status Epilepticus

Figure 4

The example Gaussian models in the joint time-frequency domain. The features used are (a) Shannon entropy, (b) Tsallis entropy, and (c) regularity. The feature segments (triangles) are different segments from Figure 3. Solid line: the optimal decision boundary by MLE. Dotted line: the optimal decision boundary in the time domain solely. Dashed line: the optimal decision boundary in the frequency domain solely. Upward-pointing and downward-pointing empty triangles: detected true bursts and suppressions by all the boundaries. Upward-pointing filled triangle: a burst missed in time or frequency domain solely. Downward-pointing filled triangles: falsely alarmed suppressions in time or frequency domain solely.

(a)

(b)

(c)