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Evaluating sleep in bipolar disorder: comparison between actigraphy, polysomnography, and sleep diary
Katherine A Kaplan1, Lisa S Talbot, June Gruber
1Department of Psychology, University of California, Berkeley, Berkeley, CA 94720, USA.
Bipolar Disorders
|November 22, 2012
Summary
Actigraphy accurately measures sleep in bipolar disorder, correlating well with polysomnography and sleep diaries. This validates actigraphy for assessing sleep patterns and fragmentation in individuals with bipolar disorder.
Area of Science:
- Neuroscience and Psychiatry
- Sleep Medicine
- Biomedical Engineering
Background:
- Bipolar disorder frequently involves sleep disturbances and circadian rhythm dysregulation.
- Monitoring sleep may predict mood shifts in individuals with bipolar disorder.
- Actigraphy is a valuable tool for sleep assessment, but its validity in bipolar disorder requires systematic comparison.
Purpose of the Study:
- To compare sleep parameter estimations from actigraphy, polysomnography, and sleep diaries in bipolar disorder patients and controls.
- To evaluate the concordance of actigraphy with polysomnography and sleep diaries for key sleep metrics.
- To determine if actigraphy's validity is influenced by insomnia or medication use in bipolar disorder.
Main Methods:
- 27 individuals with bipolar disorder (I or II) and 27 matched controls participated.
- Participants underwent two nights of laboratory monitoring.
- Sleep was assessed using polysomnography, actigraphy, and sleep diaries.
Main Results:
- Actigraphy and polysomnography estimates of sleep parameters were highly correlated.
- No significant differences in sleep parameters were found between bipolar disorder patients and controls.
- Actigraphy concordance was largely independent of insomnia and medication use.
Conclusions:
- Actigraphy is a valid and reliable method for assessing sleep duration and fragmentation in bipolar disorder.
- Findings support the use of actigraphy as a clinical and research tool in bipolar disorder management.
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