EEG spectral analysis of nighttime sleep and daytime MSLTs and neurocognitive evaluations in subjects with co-morbid insomnia and OSA

Apr 13, 2025Respiratory research

Brain wave patterns during sleep and daytime sleep tests linked to thinking skills in people with both insomnia and sleep apnea

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Abstract

A total of 206 participants were analyzed, including 77 patients with chronic insomnia and obstructive sleep apnea ().

  • COMISA patients exhibited EEG power characteristics similar to both chronic insomniacs and obstructive sleep apnea patients.
  • In non-REM sleep stages, COMISA patients showed decreased delta and increased alpha and beta power.
  • During rapid eye movement (REM) sleep and multiple sleep latency tests, COMISA patients demonstrated increased beta power and also increased delta power.
  • Subjectively measured attention and negative beliefs about uncontrollability and danger of worry were worse in COMISA patients compared to obstructive sleep apnea patients.
  • Negative beliefs were positively associated with insomnia severity index scores.

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Key numbers

206
Participants
Total number of participants included in the study.
74
Chronic Insomniacs (CIs)
Number of chronic insomniacs included in the analysis.
55
Obstructive Sleep Apnea (OSA) Patients
Number of OSA patients included in the analysis.

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