ArticleSleep & breathing = Schlaf & Atmung2020
The correlation between the electroencephalographic spectral analysis and salivary cortisol rhythm in insomnia.
Article in Sleep & breathing = Schlaf & Atmung, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed, 3 citations in OpenAlex.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveInsomnia is a common sleep disorder that affects many adults either transiently or chronically. This study aimed to establish whether there is a relationship between the electroencephalographic (EEG) spectral analysis and salivary cortisol levels in insomnia and compared to healthy controls. MATERIALS AND
methodsThis case-control study included 15 insomnia patients and 15 healthy control subjects. Insomnia was determined according to the International Classification of Headache Disorders III diagnostic criteria. The EEG data were collected and processed with MATLAB software. Blood and salivary samples were taken for hematological and biochemical measurements. Salivary cortisol levels were calculated and compared statistically with the healthy group.
resultsThe mean age of the patients was 46.5 ± 11 years. The salivary cortisol levels at 18:00 and 24:00 were found higher in the insomnia than in the healthy subjects (respectively, 0.12 (0.11) μg/dl, 0.07 (0.02) μg/dl). But this difference was not statistically significant (p > 0.05). No significant difference was observed in the spectral analysis of patients between the frontal, central, and occipital channel (p > 0.05). However, in the correlation between the frontal channel spectral analysis and at the 24:00 salivary cortisol of patient and control group, DeltaGmax (p = 0.002), DeltaGmean (p = 0.019) and, in the correlation with 18:00 salivary cortisol DeltaGmax (p = 0.010), were positively correlated.
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.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.