Fig. 2.

Standard visual scoring of sleep stages compared with slow wave activity (SWA) acquired at the same time for the same subject – in power in microvolts squared in the 0.5–4.0 hz frequency. Histograms are combined and modified from Fig. 1, Fig. 2, for subject S6 pages 533-4 in Janusko et al. [51].

Black arrows indicate timing of an episode of sleepwalking or confusional arousal. Red arrows indicated the start of N3 in the upper tracing and its relationship to SWA at the same time. SWA occurs prior to the onset of N3.

Subject 6 is a clinically diagnosed with sleepwalking or confusional arousal with a mean age of 31.2 + 2.2 years. The subject was free of sleep disorders, kept a regular sleep/wake schedule, no psychotropic drug. Large arrows indicate SWA level at the time N3 is first scored.