Figures & data
![Figure 1. Actigrams of patients with disorderd sleep-wake schedules. Sleep episodes are represented by white areas, wake episodes by black areas. The 24-h period is double-plotted in a raster format. A. Delayed sleep phase syndrome. B. Advanced sleep phase syndrome. C. Non-24-h sleep-wake syndrome. D. Irregular sleep-wake pattern.](/cms/asset/39e0bcf4-6798-4546-aa05-724451e394b0/tdcn_a_12130606_f0001_oc.jpg)
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