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Misperception of sleep in bipolar disorder: an exploratory study using questionnaire versus actigraphy
Henrik Myhre Ihler1, Manon Meyrel2,3, Vincent Hennion2
1NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway. henrikih@uio.no.
International Journal of Bipolar Disorders
|November 20, 2020
Summary
Sleep misperception did not differ between individuals with Bipolar Disorder (BD) and healthy controls. However, older age, obstructive sleep apnea symptoms, and mild depressive symptoms were linked to greater sleep misperception in BD.
Area of Science:
- Psychiatry
- Sleep Medicine
- Neuroscience
Background:
- Sleep misperception, the discrepancy between subjective and objective sleep, is poorly understood in Bipolar Disorder (BD).
- Previous studies on sleep misperception in BD versus healthy controls (HC) have yielded mixed results.
Purpose of the Study:
- To compare sleep misperception between individuals with BD and HC.
- To identify factors associated with sleep misperception in BD.
Main Methods:
- Assessed 133 euthymic individuals with BD and 63 HC using subjective (Pittsburgh Sleep Quality Index) and objective (21-day actigraphy) measures.
- Compared correlations and absolute differences in total sleep time, sleep latency, and sleep efficiency between groups.
- Used regression analyses to examine associations between clinical factors and sleep misperception.
Main Results:
- No significant differences in sleep misperception magnitude were found between individuals with BD and HC for total sleep time, sleep latency, or sleep efficiency.
- Individuals with BD type 1 showed greater misperception of sleep efficiency compared to BD type 2.
- Age, obstructive sleep apnea symptoms, and mild depressive symptoms were key contributors to sleep misperception.
Conclusions:
- A diagnosis of Bipolar Disorder was not directly associated with sleep misperception.
- Factors such as older age, obstructive sleep apnea symptoms, and mild depressive symptoms may increase sleep misperception.
- Clinicians should consider objective sleep assessments when misperception is high, as subjective measures may become less reliable.
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