Modeling sleep onset misperception in insomnia

被引:17
|
作者
Hermans, Lieke W. A. [1 ]
van Gilst, Merel M. [1 ,2 ]
Regis, Marta [3 ]
van den Heuvel, Leonie C. E. [4 ]
Langen, Hanneke [2 ]
van Mierlo, Petra [2 ]
Krijn, Roy [2 ]
Hoondert, Bertram [2 ]
Maass, Henning [4 ]
van Dijk, Johannes P. [1 ,2 ,5 ]
Leufkens, Tim R. M. [4 ,6 ]
Overeem, Sebastiaan [1 ,2 ,6 ]
机构
[1] Eindhoven Univ Technol, Dept Elect Engn, NL-5600 MB Eindhoven, Netherlands
[2] Kempenhaeghe Fdn, Ctr Sleep Med, Heeze, Noord Brabant, Netherlands
[3] Eindhoven Univ Technol, Dept Math & Comp Sci, Eindhoven, Netherlands
[4] Philips Res, Eindhoven, Netherlands
[5] Univ Ulm, Dept Orthodont, Ulm, Germany
[6] Eindhoven Univ Technol, Dept Ind Design, Eindhoven, Netherlands
关键词
insomnia; sleep state misperception; sleep onset latency; sleep fragmentation; EEG CHARACTERISTICS; SUBJECTIVE SLEEP; PERCEPTION; QUALITY; INDEX; TIME;
D O I
10.1093/sleep/zsaa014
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Objectives: To extend and validate a previously suggested model of the influence of uninterrupted sleep bouts on sleep onset misperception in a large independent data set. Methods: Polysomnograms and sleep diaries of 139 insomnia patients and 92 controls were included. We modeled subjective sleep onset as the start of the first uninterrupted sleep fragment longer than L-s minutes, where parameter L-s reflects the minimum length of a sleep fragment required to be perceived as sleep. We compared the so-defined sleep onset latency (SOL) for various values of L-s. Model parameters were compared between groups, and across insomnia subgroups with respect to sleep onset misperception, medication use, age, and sex. Next, we extended the model to incorporate the length of wake fragments. Model performance was assessed by calculating root mean square errors (RMSEs) of the difference between estimated and perceived SOL. Results: Participants with insomnia needed a median of 34 minutes of undisturbed sleep to perceive sleep onset, while healthy controls needed 22 minutes (Mann-Whitney U = 4426, p < 0.001). Similar statistically significant differences were found between sleep onset misperceivers and non-misperceivers (median 40 vs. 20 minutes, Mann-Whitney U = 984.5, p < 0.001). Model outcomes were similar across other subgroups. Extended models including wake bout lengths resulted in only marginal improvements of model outcome. Conclusions: Patients with insomnia, particularly sleep misperceivers, need larger continuous sleep bouts to perceive sleep onset. The modeling approach yields a parameter for which we coin the term Sleep Fragment Perception Index, providing a useful measure to further characterize sleep state misperception.
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页数:10
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