Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implications
The timing of first period of slow wave sleep (SWS) is often used as a proxy for determining if and when Disorders of Arousal (DOA) such as sleepwalking are likely to occur or did occur in the past. In criminal cases employing a “sleepwalking defense” the prosecution may argue that nocturnal violenc...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Sleep Medicine: X |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590142722000167 |
| _version_ | 1798000378141212672 |
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| author | Mark R. Pressman |
| author_facet | Mark R. Pressman |
| author_sort | Mark R. Pressman |
| collection | DOAJ |
| description | The timing of first period of slow wave sleep (SWS) is often used as a proxy for determining if and when Disorders of Arousal (DOA) such as sleepwalking are likely to occur or did occur in the past. In criminal cases employing a “sleepwalking defense” the prosecution may argue that nocturnal violence or sexually aggressive behavior occurred too early in the sleep period to be associated with SWS. Expert witness opinion on the expected latency to SWS (LSWS) has varied from minutes after sleep onset to ≥60 min. A search of PubMed was conducted for LSWS and for any reports of DOAs occurring from stage N2. A total of 21 studies reported LSWS in normal controls, clinically diagnosed sleepwalkers, in otherwise normal sleepers following different types of sleep deprivation and due to the effects of alcohol. Five studies reported episodes of DOA from N2 sleep. The shortest mean LSWS of 6.4 min was found with a combination of total sleep deprivation and alcohol. In a group of normal research subjects, a LSWS mean of 10.7 min was noted. LSWS in DOA patients occurred as early as a mean of 12.4 min. Two sleep studies performed on Kenneth Parks, acquitted of the murder of his mother-in-law by a sleepwalking defense, reported LSWSs of 9.7 and 10 min. Sleep deprivation but not alcohol was found to decrease LSWS significantly. Expert opinions on LSWS should be based on scientific peer reviewed publications documenting empirical sleep evidence and can be much shorter than is generally reported. |
| first_indexed | 2024-04-11T11:20:33Z |
| format | Article |
| id | doaj.art-56214ebb8fc242cdb6e72dec5022ce89 |
| institution | Directory Open Access Journal |
| issn | 2590-1427 |
| language | English |
| last_indexed | 2024-04-11T11:20:33Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sleep Medicine: X |
| spelling | doaj.art-56214ebb8fc242cdb6e72dec5022ce892022-12-22T04:27:06ZengElsevierSleep Medicine: X2590-14272022-12-014100057Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implicationsMark R. Pressman0Pressman Sleep and Science Forensics, LLC, Ardmore, PA, USA; Lankenau Institute for Medical Research and, Division of Pulmonary and Critical Care Medicine, Lankenau Medical Center, Wynnewood, PA, USA; Dept. of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA; Charles Widger School of Law, Villanova University, USAThe timing of first period of slow wave sleep (SWS) is often used as a proxy for determining if and when Disorders of Arousal (DOA) such as sleepwalking are likely to occur or did occur in the past. In criminal cases employing a “sleepwalking defense” the prosecution may argue that nocturnal violence or sexually aggressive behavior occurred too early in the sleep period to be associated with SWS. Expert witness opinion on the expected latency to SWS (LSWS) has varied from minutes after sleep onset to ≥60 min. A search of PubMed was conducted for LSWS and for any reports of DOAs occurring from stage N2. A total of 21 studies reported LSWS in normal controls, clinically diagnosed sleepwalkers, in otherwise normal sleepers following different types of sleep deprivation and due to the effects of alcohol. Five studies reported episodes of DOA from N2 sleep. The shortest mean LSWS of 6.4 min was found with a combination of total sleep deprivation and alcohol. In a group of normal research subjects, a LSWS mean of 10.7 min was noted. LSWS in DOA patients occurred as early as a mean of 12.4 min. Two sleep studies performed on Kenneth Parks, acquitted of the murder of his mother-in-law by a sleepwalking defense, reported LSWSs of 9.7 and 10 min. Sleep deprivation but not alcohol was found to decrease LSWS significantly. Expert opinions on LSWS should be based on scientific peer reviewed publications documenting empirical sleep evidence and can be much shorter than is generally reported.http://www.sciencedirect.com/science/article/pii/S2590142722000167Slow wave sleepN3Disorder of arousalSleepwalking defenseLatency to slow wave sleepKenneth parks |
| spellingShingle | Mark R. Pressman Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implications Sleep Medicine: X Slow wave sleep N3 Disorder of arousal Sleepwalking defense Latency to slow wave sleep Kenneth parks |
| title | Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implications |
| title_full | Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implications |
| title_fullStr | Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implications |
| title_full_unstemmed | Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implications |
| title_short | Disorders of Arousal and timing of the first period of slow wave sleep: Clinical and forensic implications |
| title_sort | disorders of arousal and timing of the first period of slow wave sleep clinical and forensic implications |
| topic | Slow wave sleep N3 Disorder of arousal Sleepwalking defense Latency to slow wave sleep Kenneth parks |
| url | http://www.sciencedirect.com/science/article/pii/S2590142722000167 |
| work_keys_str_mv | AT markrpressman disordersofarousalandtimingofthefirstperiodofslowwavesleepclinicalandforensicimplications |