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Sleep state instabilities in major depressive disorder: Detection and quantification with electrocardiogram‐based cardiopulmonary coupling analysis
Author(s) -
Yang Albert C.,
Yang ChengHung,
Hong ChenJee,
Tsai ShihJen,
Kuo ChungHsun,
Peng ChungKang,
Mietus Joseph E.,
Goldberger Ary L.,
Thomas Robert J.
Publication year - 2011
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.2010.01060.x
Subject(s) - wakefulness , depression (economics) , sleep (system call) , psychology , insomnia , major depressive disorder , coupling (piping) , cardiology , sleep disorder , pittsburgh sleep quality index , slow wave sleep , electroencephalography , audiology , anesthesia , medicine , sleep quality , psychiatry , cognition , mechanical engineering , computer science , engineering , economics , macroeconomics , operating system
Sleep disruption is an important aspect of major depressive disorder but lacks an objective and inexpensive means of assessment. We evaluated the utility of electrocardiogram (ECG)‐based cardiopulmonary coupling analysis to quantify physiologic sleep stability in patients with major depression. Relative to controls, unmedicated depressed patients had a reduction in high‐frequency coupling, an index of stable sleep, an increase in low‐frequency coupling, an index of unstable sleep, and an increase in very‐low‐frequency coupling, an index of wakefulness/REM sleep. The medicated depressed group showed a restoration of stable sleep to a level comparable with that of the control group. ECG‐based cardiopulmonary coupling analysis may provide a simple, cost‐efficient point‐of‐care method to quantify sleep quality/stability and to objectively evaluate the severity of insomnia in patients with major depression.