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Dudysová D, Janků K, Piorecký M, Hantáková V, Orendáčová M, Piorecká V, Štrobl J, Kliková M, Ngo HVV, Kopřivová J. Closed-loop auditory stimulation of slow-wave sleep in chronic insomnia: a pilot study. J Sleep Res 2024:e14179. [PMID: 38467353 DOI: 10.1111/jsr.14179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 12/12/2023] [Accepted: 02/07/2024] [Indexed: 03/13/2024]
Abstract
Insomnia is a prevalent and disabling condition whose treatment is not always effective. This pilot study explores the feasibility and effects of closed-loop auditory stimulation (CLAS) as a potential non-invasive intervention to improve sleep, its subjective quality, and memory consolidation in patients with insomnia. A total of 27 patients with chronic insomnia underwent a crossover, sham-controlled study with 2 nights of either CLAS or sham stimulation. Polysomnography was used to record sleep parameters, while questionnaires and a word-pair memory task were administered to assess subjective sleep quality and memory consolidation. The initial analyses included 17 patients who completed the study, met the inclusion criteria, and received CLAS. From those, 10 (58%) received only a small number of stimuli. In the remaining seven (41%) patients with sufficient CLAS, we evaluated the acute and whole-night effect on sleep. CLAS led to a significant immediate increase in slow oscillation (0.5-1 Hz) amplitude and activity, and reduced delta (1-4 Hz) and sigma/sleep spindle (12-15 Hz) activity during slow-wave sleep across the whole night. All these fundamental sleep rhythms are implicated in sleep-dependent memory consolidation. Yet, CLAS did not change sleep-dependent memory consolidation or sleep macrostructure characteristics, number of arousals, or subjective perception of sleep quality. Results showed CLAS to be feasible in patients with insomnia. However, a high variance in the efficacy of our automated stimulation approach suggests that further research is needed to optimise stimulation protocols to better unlock potential CLAS benefits for sleep structure and subjective sleep quality in such clinical settings.
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Affiliation(s)
- Daniela Dudysová
- National Institute of Mental Health, Klecany, Czech Republic
- Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Karolina Janků
- National Institute of Mental Health, Klecany, Czech Republic
| | - Marek Piorecký
- National Institute of Mental Health, Klecany, Czech Republic
- Faculty of Biomedical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Veronika Hantáková
- National Institute of Mental Health, Klecany, Czech Republic
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, Scotland
| | - Mária Orendáčová
- National Institute of Mental Health, Klecany, Czech Republic
- Third Faculty of Medicine, Charles University, Prague, Czech Republic
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Václava Piorecká
- National Institute of Mental Health, Klecany, Czech Republic
- Faculty of Biomedical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Jan Štrobl
- National Institute of Mental Health, Klecany, Czech Republic
- Faculty of Biomedical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Monika Kliková
- National Institute of Mental Health, Klecany, Czech Republic
| | - Hong-Viet V Ngo
- Center for Brain, Behaviour and Metabolism, University of Lübeck, Lübeck, Germany
- Department of Psychology, University of Lübeck, Lübeck, Germany
- Department of Psychology, University of Essex, Colchester, UK
| | - Jana Kopřivová
- National Institute of Mental Health, Klecany, Czech Republic
- Third Faculty of Medicine, Charles University, Prague, Czech Republic
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Nikolič M, Viktorin V, Zach P, Tylš F, Dudysová D, Janků K, Kopřivová J, Kuchař M, Brunovský M, Horáček J, Páleníček T. Psilocybin intoxication did not affect daytime or sleep-related declarative memory consolidation in a small sample exploratory analysis. Eur Neuropsychopharmacol 2023; 74:78-88. [PMID: 37336163 DOI: 10.1016/j.euroneuro.2023.04.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 06/21/2023]
Abstract
Psilocybin is investigated as a fast-acting antidepressant used in conjunction with psychotherapy. Intact cognitive functions, including memory, are one of the basic conditions of effective psychedelic-assisted therapy. While cognitive and memory processing is attenuated on various domains during psilocybin intoxication, the effect of psilocybin on the consolidation of memories learned outside of acute intoxication is not known. Thus the main aim of the current study was to test the effects of psilocybin on (A) memory consolidation of previously learned material just after the psilocybin session and (B) on overnight memory consolidation the night just after the psilocybin session. 20 healthy volunteers (10 M/10F) were enrolled in a placebo-controlled, double-blind, cross-over design. Effects on declarative memory consolidation in condition (A) The Groton Maze Learning Task and Rey Auditory Verbal Learning Test were used, and for (B) the Pair Associative Learning Test was used. We did not find psilocybin to improve memory consolidation. At the same time, we did not find psilocybin to negatively affect memory consolidation in any of the tests used. This evidence adds to the safety profile for the use of psilocybin.
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Affiliation(s)
- Marek Nikolič
- Psychedelic Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic
| | - Vojtěch Viktorin
- Psychedelic Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic
| | - Peter Zach
- Psychedelic Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic; 3rd Sleep Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Technická 5, Prague 6, 166 28, Czech Republic
| | - Filip Tylš
- Psychedelic Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic
| | - Daniela Dudysová
- 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic; 3rd Sleep Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic
| | - Karolína Janků
- 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic; 3rd Sleep Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic
| | - Jana Kopřivová
- 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic; 3rd Sleep Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic
| | - Martin Kuchař
- Psychedelic Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Technická 5, Prague 6, 166 28, Czech Republic
| | - Martin Brunovský
- 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic
| | - Jiří Horáček
- Psychedelic Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic
| | - Tomáš Páleníček
- Psychedelic Research Centre, National Institute of Mental Health, Topolová 748, Klecany, 250 67, Czech Republic; 3rd Faculty of Medicine, Charles University, Ruská 87, Prague 10, 100 00, Czech Republic.
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Dudysová D, Janků K, Šmotek M, Saifutdinova E, Kopřivová J, Bušková J, Mander BA, Brunovský M, Zach P, Korčák J, Andrashko V, Viktorinová M, Tylš F, Bravermanová A, Froese T, Páleníček T, Horáček J. The Effects of Daytime Psilocybin Administration on Sleep: Implications for Antidepressant Action. Front Pharmacol 2020; 11:602590. [PMID: 33343372 PMCID: PMC7744693 DOI: 10.3389/fphar.2020.602590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/13/2020] [Indexed: 12/02/2022] Open
Abstract
Serotonergic agonist psilocybin is a psychedelic with antidepressant potential. Sleep may interact with psilocybin’s antidepressant properties like other antidepressant drugs via induction of neuroplasticity. The main aim of the study was to evaluate the effect of psilocybin on sleep architecture on the night after psilocybin administration. Regarding the potential antidepressant properties, we hypothesized that psilocybin, similar to other classical antidepressants, would reduce rapid eye movement (REM) sleep and prolong REM sleep latency. Moreover, we also hypothesized that psilocybin would promote slow-wave activity (SWA) expression in the first sleep cycle, a marker of sleep-related neuroplasticity. Twenty healthy volunteers (10 women, age 28–53) underwent two drug administration sessions, psilocybin or placebo, in a randomized, double-blinded design. Changes in sleep macrostructure, SWA during the first sleep cycle, whole night EEG spectral power across frequencies in non-rapid eye movement (NREM) and REM sleep, and changes in subjective sleep measures were analyzed. The results revealed prolonged REM sleep latency after psilocybin administration and a trend toward a decrease in overall REM sleep duration. No changes in NREM sleep were observed. Psilocybin did not affect EEG power spectra in NREM or REM sleep when examined across the whole night. However, psilocybin suppressed SWA in the first sleep cycle. No evidence was found for sleep-related neuroplasticity, however, a different dosage, timing, effect on homeostatic regulation of sleep, or other mechanisms related to antidepressant effects may play a role. Overall, this study suggests that potential antidepressant properties of psilocybin might be related to changes in sleep.
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Affiliation(s)
- Daniela Dudysová
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Karolina Janků
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Michal Šmotek
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Elizaveta Saifutdinova
- National Institute of Mental Health, Klecany, Czechia.,Czech Technical University in Prague, Prague, Czechia
| | - Jana Kopřivová
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Jitka Bušková
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Bryce Anthony Mander
- Department of Psychiatry and Human Behavior, School of Medicine, Center for the Neurobiology of Learning and Memory, University of California, Irvine, Irvine, CA, United States
| | - Martin Brunovský
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Peter Zach
- National Institute of Mental Health, Klecany, Czechia
| | - Jakub Korčák
- National Institute of Mental Health, Klecany, Czechia
| | | | - Michaela Viktorinová
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Filip Tylš
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Anna Bravermanová
- National Institute of Mental Health, Klecany, Czechia.,First Faculty of Medicine, Charles University, Prague, Czechia
| | - Tom Froese
- Embodied Cognitive Science Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Tomáš Páleníček
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Jiří Horáček
- National Institute of Mental Health, Klecany, Czechia.,Third Faculty of Medicine, Charles University, Prague, Czechia
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Evansová K, Červená K, Novák O, Dudysová D, Nekovářová T, Fárková E, Fajnerová I. The effect of chronotype and time of assessment on cognitive performance. BIOL RHYTHM RES 2020. [DOI: 10.1080/09291016.2020.1822053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Katarína Evansová
- National Institute of Mental Health, Klecany, Czech Republic
- Faculty of Arts, Charles University, Prague, Czech Republic
- Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Kateřina Červená
- National Institute of Mental Health, Klecany, Czech Republic
- Faculty of Science, Charles University, Prague, Czech Republic
| | - Ondřej Novák
- National Institute of Mental Health, Klecany, Czech Republic
- Faculty of Arts, Charles University, Prague, Czech Republic
| | | | - Tereza Nekovářová
- National Institute of Mental Health, Klecany, Czech Republic
- Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Eva Fárková
- National Institute of Mental Health, Klecany, Czech Republic
| | - Iveta Fajnerová
- Applied Neuroscience and Neuroimaging, National Institute of Mental Health, Klecany
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Dudysová D, Kozáková E, Bakštein E, Saifutdinova E, Mander B, Janků K, Kliková M, Miletínová E, Bartoš A, Kopřivová J. Sleep spindle decline in aging and its relation to resting-state thalamocortical connectivity - preliminary findings. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Anýž J, Bakštein E, Dudysová D, Veldová K, Kliková M, Fárková E, Kopřivová J, Španiel F. No wink of sleep: Population sleep characteristics in response to the brexit poll and the 2016 U.S. presidential election. Soc Sci Med 2019; 222:112-121. [DOI: 10.1016/j.socscimed.2018.12.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 11/16/2018] [Accepted: 12/17/2018] [Indexed: 01/23/2023]
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Weissová K, Škrabalová J, Skálová K, Červená K, Bendová Z, Miletínová E, Kopřivová J, Šonka K, Dudysová D, Bartoš A, Bušková J. Circadian rhythms of melatonin and peripheral clock gene expression in idiopathic REM sleep behavior disorder. Sleep Med 2018; 52:1-6. [PMID: 30195196 DOI: 10.1016/j.sleep.2018.07.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 07/24/2018] [Accepted: 07/31/2018] [Indexed: 01/23/2023]
Abstract
OBJECTIVE To evaluate changes in the expression of clock genes and melatonin levels in patients with idiopathic REM sleep behavior disorder (RBD) as a potential early stage of synucleinopathies. METHODS We assessed the rhythmicity of circadian clock genes using real time-quantitative polymerase chain reaction and 24-h blood melatonin profiles using radio-immunoassay in 10 RBD patients and nine age-matched controls. RESULTS The RBD patients did not show circadian rhythmicity for clock genes Per2, Bmal1, and Nr1d1 but the rhythmicity of Per 1 remained, and the amplitude of Per3 was diminished. The 24-h melatonin rhythm did not differ between RBD patients and healthy control subjects. Melatonin profile in RBD patients was delayed by 2 h compared to controls, the habitual sleep phases were phase delayed by about 1 h, however no phase shift occurred in any of the clock genes studied. The control group had stable acrophases of melatonin rhythms of approximately 5 h whereas the RBD patients had a more dispersed range over 11 h. CONCLUSIONS Our results suggest that RBD could be associated with altered expression of clock genes and delayed melatonin secretion. Thus, we argue that circadian system dysregulation could play a role in RBD.
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Affiliation(s)
- Kamila Weissová
- National Institute of Mental Health, Klecany, Czech Republic; Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jitka Škrabalová
- National Institute of Mental Health, Klecany, Czech Republic; Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Kateřina Skálová
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Kateřina Červená
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Zdeňka Bendová
- National Institute of Mental Health, Klecany, Czech Republic; Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Eva Miletínová
- National Institute of Mental Health, Klecany, Czech Republic
| | - Jana Kopřivová
- National Institute of Mental Health, Klecany, Czech Republic; Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Karel Šonka
- Department of Neurology and Centre of Clinical Neurosciences, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | | | - Aleš Bartoš
- National Institute of Mental Health, Klecany, Czech Republic; Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jitka Bušková
- National Institute of Mental Health, Klecany, Czech Republic; Third Faculty of Medicine, Charles University, Prague, Czech Republic.
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Dudysová D, Malá I, Mladá K, Saifutdinova E, Koprivova J, Sos P. Structural and construct validity of the Czech version of the Pittsburgh Sleep Quality Index in chronic insomnia. Neuro Endocrinol Lett 2017; 38:67-73. [PMID: 28456150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 12/18/2016] [Indexed: 06/07/2023]
Abstract
OBJECTIVES The Pittsburgh Sleep Quality Index (PSQI) is one of the widely used and recommended measures of assessing sleep quality in chronic insomnia; however certain psychometric properties of the questionnaire are still unknown in this group of patients. The present study aimed to examine the internal consistency, and structural and convergent validity of the Czech version of the PSQI in chronic insomnia patients. The usefulness of the standard and alternative scoring systems was also investigated in relation to symptoms of sleepiness, insomnia, depression, and anxiety. METHODS In our study, 105 participants filled out a series of questionnaires including PSQI, Insomnia Severity Index (ISI), Epworth Sleepiness Scale (ESS), and Beck Depression and Anxiety Inventories (BDI, BAI). RESULTS The internal consistency of the questionnaire using Cronbach's alpha was 0.608. A series of confirmatory factor analyses revealed adequate fit for three structures. A three-factor model descriptively stood out among the rest but subsequent correlational analyses did not provide sufficient support for accepting an alternative scoring model. CONCLUSIONS The results highlight the issue of structural variance of the PSQI and in chronic insomnia point to the important role of the PSQI components of daytime dysfunction and sleep disturbances in showing comorbid symptoms with daytime sleepiness and psychopathology.
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Affiliation(s)
| | - Ivana Malá
- National Institute of Mental Health, Klecany, Czech Republic
| | - Karolína Mladá
- National Institute of Mental Health, Klecany, Czech Republic
| | | | - Jana Koprivova
- National Institute of Mental Health, Klecany, Czech Republic
| | - Peter Sos
- National Institute of Mental Health, Klecany, Czech Republic
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