Summary of PSG studies
| Case | Time of evolution (months) | Length of study | Main findings |
|---|---|---|---|
| 2/IV-10 | 9 | 1 night | Absence of sleep rhythms |
| 2/V-1 | 12 | 24 h | Absence of sleep rhythms |
| 2/V-6 | 6 | 3 nights plus 24 h | Reduced sleep efficacy; sleep fragmentation; REM without muscle atonia; central apnoeas, tachycardia; profuse periodic and non-periodic leg movements |
| 3/III-3 | 12 | 1 night | Severe abnormal sleep pattern; some spindles in phase II; no phases III or IV; a single period of REM sleep |
| 4/III-6 | 9 | 1 night | Absence of sleep rhythms (phase I only); central apnoeas; periodic legs movements |
| 12 | 1 night | Absence of sleep rhythms | |
| 5/III-1 | 9 | 1 night | Severe abnormal pattern of sleep (phases I and II); very few spindles; central apnoeas |
| 5/III-2 | 3 | 1 night | Severe abnormal pattern of sleep (phases I and II); very few spindles; a single period of REM sleep |
| 6/III-9 | 11 | 1 night | Severe abnormal pattern of sleep; central apnoeas; some fragments of REM sleep |
| 7/III-4 | 12 | 1 night | Absence of sleep rhythms |
| 8/III-1 | 6 | 1 night | Absence of sleep rhythms |
| 9/II-2 | 6 | 1 night | Absence of sleep rhythms |