The correlation between the electroencephalographic spectral analysis and salivary cortisol rhythm in insomnia

ConclusionIn this study, no significant difference was found in spectral analysis and salivary cortisol levels in insomnia patients, but at 18:00 and 24:00, cortisol levels were correlated positively with theta and delta waves in EEG spectral analysis in some channels.
Source: Sleep and Breathing - Category: Respiratory Medicine Source Type: research