Fig. 4.

Fractional occupancy of the HMM–MAR states, labelled as ERD (blue), ERS (red) and baseline (green) according to their spectral properties and time of occurrence. A. Subject-by-subject individual runs, displayed by subject. B. Subject-by-subject individual runs, displayed by state. C. Group run (all subjects altogether), displayed by state. In B and C, the thick lines represent the mean across subjects. The rightmost panels of B and C depict just these means. Examples of raw state time courses, along with state life-time statistics, are shown in Fig. 8B, C.