https://doi.org/10.1140/epjs/s11734-026-02130-3
Regular Article
Changes in EEG recurrence rate during REM sleep caused by Parkinson’s disease
1
Institute of Physics, Saratov State University Named After N.G. Chernyshevsky, Astrakhanskaya St., 83, 410012, Saratov, Russian Federation
2
Department of Biophysics and Digital Technologies, Saratov State Medical University Named After V.I. Razumovsky, Bolshaya Kazachya St., 112, 410012, Saratov, Russian Federation
3
Center for Coordination of Fundamental Scientific Activities, National Medical Research Center for Therapy and Preventive Medicine, Petroverigsky Lane, 10, 101000, Moscow, Russian Federation
a
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Received:
12
December
2025
Accepted:
10
January
2026
Published online:
21
January
2026
Parkinson’s disease is known to be closely associated with sleep and breathing disorders. We examined three groups of subjects: 15 apparently healthy patients, 10 patients with obstructive sleep apnea (OSA), and 25 patients with Parkinson’s disease (PD). For each subject, two full-night polysomnography recordings were recorded at intervals of 1–3 days. Polysomnographic electroencephalography (EEG) recordings were analyzed using quantitative recurrence analysis. The ratio of the average recurrence rate for REM sleep stage to other sleep stages was calculated. The PD group showed statistically significant differences (
) with both control and OSA groups. However, statistically significant differences were not found between the control and OSA groups. The main conclusion is that Parkinson’s disease alters the fundamental properties of brain activity during REM sleep, leading to an increased probability of returning EEG values to the previous values in time series.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
