1
|
Ukraintseva YV, Saltykov KA, Tkachenko ON. Neither fifty percent slow-wave sleep suppression nor fifty percent rapid eye movement sleep suppression does impair memory consolidation. Sleep Med 2024; 124:223-235. [PMID: 39326217 DOI: 10.1016/j.sleep.2024.09.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 09/17/2024] [Accepted: 09/18/2024] [Indexed: 09/28/2024]
Abstract
Establishing well-defined relationships between sleep features and memory consolidation is essential in comprehending the pathophysiology of cognitive decline commonly seen in patients with insomnia, depression, and other sleep-disrupting conditions. Twenty-eight volunteers participated in two experimental sessions: a session with selective SWS suppression during one night and a session with undisturbed night sleep (as a control condition). Fifteen of them also participated in a third session with REM suppression. Suppression was achieved by presenting an acoustic tone. In the evening and the morning, the participants completed procedural and declarative memory tasks and the Psychomotor vigilance task (PVT). Heart rate variability analysis and salivary cortisol were used to control possible stress reactions to sleep interference. SWS and REM suppression led to more than 50 percent reduction in the amount of these stages. Neither vigilance nor memory consolidation was impaired after SWS or REM suppression. Unexpectedly, a beneficial effect of selective SWS suppression on PVT performance was found. Similarly, after a night with SWS suppression, the overnight improvement in procedural skills was higher than after a night with REM suppression and after a night with undisturbed sleep. Our data brings into question the extent to which SWS and REM are truly necessary for effective memory consolidation to proceed. Moreover, SWS suppression may even improve the performance of some tasks, possibly by reducing sleep inertia associated with undisturbed sleep.
Collapse
Affiliation(s)
- Yulia V Ukraintseva
- Institute of Higher Nervous Activity and Neurophysiology of the Russian Academy of Sciences, 117485, Moscow, Russia.
| | - Konstantin A Saltykov
- Institute of Higher Nervous Activity and Neurophysiology of the Russian Academy of Sciences, 117485, Moscow, Russia
| | - Olga N Tkachenko
- Institute of Higher Nervous Activity and Neurophysiology of the Russian Academy of Sciences, 117485, Moscow, Russia
| |
Collapse
|
2
|
Nakie G, Takelle GM, Rtbey G, Andualem F, Tinsae T, Kassa MA, Tadesse G, Fentahun S, Wassie YA, Segon T, Kibralew G, Melkam M. Sleep quality and associated factors among university students in Africa: a systematic review and meta-analysis study. Front Psychiatry 2024; 15:1370757. [PMID: 38559402 PMCID: PMC10979362 DOI: 10.3389/fpsyt.2024.1370757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024] Open
Abstract
Background Poor sleep quality significantly impacts academic performance in university students. However, inconsistent and inconclusive results were found in a study on sleep among university students in several African nations. Therefore, this study aimed to estimate the pooled prevalence and associated factors of poor sleep quality among university students in Africa. Methods The databases PubMed, Scopus, Cochrane Library, Science Direct, African Journal Online, and Google Scholar were searched to identify articles. A total of 35 primary articles from 11 African countries were assessed and included in this systematic review and meta-analysis. Data were extracted by using a Microsoft Excel spreadsheet and exported to STATA version 14 for analysis. The I2 test was used to assess the statistical heterogeneity. A random effect meta-analysis model was employed with 95% confidence intervals. Funnel plots analysis and Egger regression tests were used to check the presence of publication bias. A subgroup analysis and a sensitivity analysis were done. Results A total of 16,275 study participants from 35 studies were included in this meta-analysis and systematic review. The overall pooled prevalence of poor sleep quality among university students in Africa was 63.31% (95% CI: 56.91-65.71) I2 = 97.2. The subgroup analysis shows that the combined prevalence of poor sleep quality in East, North, West, and South Africa were 61.31 (95% CI: 56.91-65.71), 62.23 (95% CI: 54.07-70.39), 54.43 (95% CI: 47.39-61.48), and 69.59 (95% CI: 50.39-88.80) respectively. Being stressed (AOR= 2.39; 95% CI: 1.63 to 3.51), second academic year (AOR= 3.10; 95% CI: 2.30 to 4.19), use of the electronic device at bedtime (AOR= 3.97 95% CI: 2.38 to 6.61)) and having a comorbid chronic illness (AOR = 2.71; 95% CI: 1.08, 6.82) were factors significantly associated with poor sleep quality. Conclusion This study shows that there is a high prevalence of poor sleep quality among university students in Africa. Being stressed, in the second year, using electronic devices at bedtime, and having chronic illness were factors associated with poor sleep quality. Therefore, addressing contributing factors and implementing routine screenings are essential to reduce the burden of poor sleep quality. Systematic Review Registration https://www.crd.york.ac.uk/prospero/, identifier CRD42023493140.
Collapse
Affiliation(s)
- Girum Nakie
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Girmaw Medfu Takelle
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Gidey Rtbey
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Fantahun Andualem
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Techilo Tinsae
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Mulat Awoke Kassa
- Department of Nursing, College of Health Science, Woldia University, Woldia, Ethiopia
| | - Gebresilassie Tadesse
- Department of Psychiatry, School of Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Setegn Fentahun
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Yilkal Abebaw Wassie
- Department of Medical Nursing, School of Nursing, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Tesfaye Segon
- Department of Psychiatry, College of Health Science, Mettu University, Mettu, Ethiopia
| | - Getasew Kibralew
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Mamaru Melkam
- Department of Psychiatry, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| |
Collapse
|
3
|
Heller HC, Herzog E, Brager A, Poe G, Allada R, Scheer FAJL, Carskadon M, de la Iglesia HO, Jang R, Montero A, Wright K, Mouraine P, Walker MP, Goel N, Hogenesch J, Van Gelder RN, Kriegsfeld L, Mah C, Colwell C, Zeitzer J, Grandner M, Jackson CL, Prichard JR, Kay SA, Paul K. The Negative Effects of Travel on Student Athletes Through Sleep and Circadian Disruption. J Biol Rhythms 2024; 39:5-19. [PMID: 37978840 PMCID: PMC11262807 DOI: 10.1177/07487304231207330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Collegiate athletes must satisfy the academic obligations common to all undergraduates, but they have the additional structural and social stressors of extensive practice time, competition schedules, and frequent travel away from their home campus. Clearly such stressors can have negative impacts on both their academic and athletic performances as well as on their health. These concerns are made more acute by recent proposals and decisions to reorganize major collegiate athletic conferences. These rearrangements will require more multi-day travel that interferes with the academic work and personal schedules of athletes. Of particular concern is additional east-west travel that results in circadian rhythm disruptions commonly called jet lag that contribute to the loss of amount as well as quality of sleep. Circadian misalignment and sleep deprivation and/or sleep disturbances have profound effects on physical and mental health and performance. We, as concerned scientists and physicians with relevant expertise, developed this white paper to raise awareness of these challenges to the wellbeing of our student-athletes and their co-travelers. We also offer practical steps to mitigate the negative consequences of collegiate travel schedules. We discuss the importance of bedtime protocols, the availability of early afternoon naps, and adherence to scheduled lighting exposure protocols before, during, and after travel, with support from wearables and apps. We call upon departments of athletics to engage with sleep and circadian experts to advise and help design tailored implementation of these mitigating practices that could contribute to the current and long-term health and wellbeing of their students and their staff members.
Collapse
Affiliation(s)
- H. Craig Heller
- Department of Biology, Stanford University, Stanford, California, USA
| | - Erik Herzog
- Department of Biology, Washington University, St. Louis, Missouri, USA
| | - Allison Brager
- U.S. Army John F. Kennedy Special Warfare Center and School, Fort Bragg, North California, USA
| | - Gina Poe
- UCLA Brain Research Institute, Los Angeles, California, USA
| | - Ravi Allada
- Department of Neurobiology, Northwestern University, Chicago, Illinois, USA
| | - Frank A. J. L. Scheer
- Medical Chronobiology Program, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Mary Carskadon
- Department of Psychiatry and Human Behavior, Bradley Hospital, Brown University, Providence, Rhode Island, USA
| | | | - Rockelle Jang
- UCLA Brain Research Institute, Los Angeles, California, USA
| | - Ashley Montero
- Department of Psychology, Flinders University, Adelaide, SA, Australia
| | - Kenneth Wright
- Integrative Physiology, University of Colorado, Boulder, Colorado, USA
| | - Philippe Mouraine
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA
| | - Matthew P. Walker
- Department of Psychology, University of California, Berkeley, California, USA
| | - Namni Goel
- Department of Psychiatry and Behavioral Sciences, Rush University, Chicago, Illinois, USA
| | - John Hogenesch
- Department of Genetics, Cincinnati University, Cincinnati, Ohio, USA
| | | | - Lance Kriegsfeld
- Department of Psychology, University of California, Berkeley, California, USA
| | - Cheri Mah
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA
| | - Christopher Colwell
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, California, USA
| | - Jamie Zeitzer
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California, USA
| | | | - Chandra L. Jackson
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
- Division of Intramural Research, National Institute on Minority Health and Health Disparities, National Institutes of Health, Bethesda, Maryland, USA
| | | | - Steve A. Kay
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Ketema Paul
- Integrative Biology and Physiology, University of California, Los Angeles, California, USA
| |
Collapse
|
4
|
Pabon E, Greenlund IM, Carter JR, de Wit H. Effects of alcohol on sleep and nocturnal heart rate: Relationships to intoxication and morning-after effects. Alcohol Clin Exp Res 2022; 46:1875-1887. [PMID: 35953878 PMCID: PMC9826048 DOI: 10.1111/acer.14921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/02/2022] [Accepted: 08/08/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Alcohol consumption produces feelings of well-being and stimulation, but also impairs psychomotor performance, disturbs cardiovascular function and sleep, and can disrupt next-day mood and behavior. A deeper understanding of how the acute effects of alcohol relate to its sleep and morning-after effects is needed to minimize harm resulting from its use. This study examined relationships between the effects of a high dose of alcohol on subjective and psychomotor measures, nocturnal heart rate, sleep quality, and morning-after mood and behavior. We hypothesized that alcohol would produce disturbances in cardiovascular and sleep regulation during the night, which would predict morning-after mood and behavioral performance. METHODS Thirty-one men and women participated in two overnight laboratory visits during which they consumed either alcohol (1.0 g/kg for men, 0.85 g/kg for women) or placebo (randomized, crossover design). They consumed the beverage from 8 to 9 pm, and remained in the laboratory overnight for polysomnographic sleep recording. Subjective and behavioral measures were obtained during consumption and at 7-8 am the morning after. RESULTS Alcohol increased both negative and positive arousal, urge to drink and sedation, and it impaired performance on behavioral tasks. During sleep, alcohol produced expected tachycardia and detriments in sleep quality including decreased total sleep time, sleep efficiency, and altered sleep architecture. Only modest effects on mood or performance were detected the following morning. The acute sedative-like effects of alcohol were related to increases in N2 sleep, but not to other disruptions in sleep or nocturnal heart rate, and neither sleep impairments nor nocturnal heart rate were related to mood or task performance the morning after. CONCLUSIONS The effects of alcohol on sleep and nocturnal heart rate were not strongly related to either its acute or morning-after effects. These findings do not provide strong support for the idea that alcohol-induced sleep disruptions underlie morning-after effects.
Collapse
Affiliation(s)
- Elisa Pabon
- Department of Psychiatry and Behavioral NeuroscienceUniversity of ChicagoChicagoIllinoisUSA
| | - Ian M. Greenlund
- Department of PsychologyMontana State UniversityBozemanMontanaUSA,Department of Health & Human DevelopmentMontana State UniversityBozemanMontanaUSA
| | - Jason R. Carter
- Department of PsychologyMontana State UniversityBozemanMontanaUSA,Department of Health & Human DevelopmentMontana State UniversityBozemanMontanaUSA
| | - Harriet de Wit
- Department of Psychiatry and Behavioral NeuroscienceUniversity of ChicagoChicagoIllinoisUSA
| |
Collapse
|
5
|
Tao Y, Yang Y, Yang P, Nan F, Zhang Y, Rao Y, Du F. A novel feature relearning method for automatic sleep staging based on single-channel EEG. COMPLEX INTELL SYST 2022. [DOI: 10.1007/s40747-022-00779-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractCorrectly identifying sleep stages is essential for assessing sleep quality and treating sleep disorders. However, the current sleep staging methods have the following problems: (1) Manual or semi-automatic extraction of features requires professional knowledge, which is time-consuming and laborious. (2) Due to the similarity of stage features, it is necessary to strengthen the learning of features. (3) Acquisition of a variety of data has high requirements on equipment. Therefore, this paper proposes a novel feature relearning method for automatic sleep staging based on single-channel electroencephalography (EEG) to solve these three problems. Specifically, we design a bottom–up and top–down network and use the attention mechanism to learn EEG information fully. The cascading step with an imbalanced strategy is used to further improve the overall classification performance and realize automatic sleep classification. The experimental results on the public dataset Sleep-EDF show that the proposed method is advanced. The results show that the proposed method outperforms the state-of-the-art methods. The code and supplementary materials are available at GitHub: https://github.com/raintyj/A-novel-feature-relearning-method.
Collapse
|
6
|
Ahmadi Z, Omidvar S. The quality of sleep and daytime sleepiness and their association with quality of school life and school achievement among students. JOURNAL OF EDUCATION AND HEALTH PROMOTION 2022; 11:159. [PMID: 35847158 PMCID: PMC9277745 DOI: 10.4103/jehp.jehp_22_22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/21/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Sleep quality is an important factor in adolescents' health; physical as well as psychological. The aim of this study was to determine sleep quality and daytime sleepiness and their effect on the quality of school life (QSL) and achievement. MATERIALS AND METHODS This cross-sectional study was conducted in high schools. The data collection was done on a random sample of 500 students from 15 to 19 years. The questionnaires included the Pittsburgh Sleep Quality Index (PSQI) to measure sleep quality and the Epworth Sleepiness Scale to measure daytime sleepiness as well as QSL. Data were analyzed by SPSS 25. Linear and logistic regressions were used to obtain adjusted and unadjusted odds ratios as well as predictors. RESULTS The mean PSQI score was 6.2 ± 2.4. It was realized that 377 participants (75.4%) were poor sleepers; 6.2% had excessive daytime sleepiness. There was a significant association between age and quality of sleep (P < 0.04). No association between gender and quality of sleep or between the quality of sleep and school achievement was found. Linear regression exhibited a significant relationship between the quality of sleep and daytime sleepiness (β = 0.218; t = 4.982, P = 0.000). There was a significant, inverse correlation between sleepiness and the total score of QSL (P = 0.000). Stepwise linear regression analysis exhibited that daytime sleepiness (P = 0.002) and school achievement (P = 0.001) were predictors of QSL. CONCLUSION According to the study results, sleepiness affects school performance and QSL, and on the other hand, daytime sleepiness is under the effect of sleep quality.
Collapse
Affiliation(s)
- Zahra Ahmadi
- Student Research Committee, Babol University of Medical Sciences, Babol, Islamic Republic of Iran
| | - Shabnam Omidvar
- Social Determinants of Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Islamic Republic of Iran
| |
Collapse
|
7
|
Huang Q, Liao C, Ge F, Ao J, Liu T. Acetylcholine bidirectionally regulates learning and memory. JOURNAL OF NEURORESTORATOLOGY 2022. [DOI: 10.1016/j.jnrt.2022.100002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
8
|
Whitehurst LN, Subramoniam A, Krystal A, Prather AA. Links between the brain and body during sleep: implications for memory processing. Trends Neurosci 2022; 45:212-223. [PMID: 35074220 DOI: 10.1016/j.tins.2021.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/30/2021] [Accepted: 12/21/2021] [Indexed: 10/19/2022]
Abstract
Sleep is intimately related to memory processes. The established view is that the transformation of experiences into long-term memories is linked to sleep-related CNS function. However, there is increasing evidence that the autonomic nervous system (ANS), long recognized to modulate cognition during waking, can impact memory processing during sleep. Here, we review human research that examines the role of autonomic activity and sleep in memory formation. We argue that autonomic activity during sleep may set the stage for the CNS dynamics associated with sleep and memory stability and integration. Further, we consider how the link between ANS activity and polysomnographic markers of sleep may help elucidate both healthy and pathological cognitive aging in humans.
Collapse
Affiliation(s)
| | | | - Andrew Krystal
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Aric A Prather
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, USA
| |
Collapse
|
9
|
Papp A, Horváth A, Virág M, Tóth Z, Borbély C, Gombos F, Szűcs A, Kamondi A. Sleep alterations are related to cognitive symptoms in Parkinson's disease: A 24-hour ambulatory polygraphic EEG study. Int J Psychophysiol 2022; 173:93-103. [DOI: 10.1016/j.ijpsycho.2022.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 11/16/2022]
|
10
|
Grieco JA, Hartnick CJ, Skotko BG, Yu PK, Pulsifer MB. Preliminary Neurocognitive Results Post Hypoglossal Nerve Stimulation in Patients With Down Syndrome. Laryngoscope 2021; 131:2830-2833. [PMID: 34363400 DOI: 10.1002/lary.29808] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/28/2021] [Accepted: 07/27/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Julie A Grieco
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Christopher J Hartnick
- Harvard Medical School, Boston, Massachusetts, U.S.A.,Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, U.S.A
| | - Brian G Skotko
- Harvard Medical School, Boston, Massachusetts, U.S.A.,Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts, U.S.A
| | - Phoebe K Yu
- Harvard Medical School, Boston, Massachusetts, U.S.A.,Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, U.S.A
| | - Margaret B Pulsifer
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, U.S.A.,Harvard Medical School, Boston, Massachusetts, U.S.A.,Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, U.S.A
| |
Collapse
|
11
|
Mukli P, Csipo T, Lipecz A, Stylianou O, Racz FS, Owens CD, Perry JW, Tarantini S, Sorond FA, Kellawan JM, Purebl G, Yang Y, Sonntag WE, Csiszar A, Ungvari ZI, Yabluchanskiy A. Sleep deprivation alters task-related changes in functional connectivity of the frontal cortex: A near-infrared spectroscopy study. Brain Behav 2021; 11:e02135. [PMID: 34156165 PMCID: PMC8413792 DOI: 10.1002/brb3.2135] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/12/2021] [Accepted: 03/19/2021] [Indexed: 01/05/2023] Open
Abstract
Sleep deprivation (SD) is known to be associated with decreased cognitive performance; however, the underlying mechanisms are poorly understood. As interactions between distinct brain regions depend on mental state, functional brain networks established by these connections typically show a reorganization during task. Hence, analysis of functional connectivity (FC) could reveal the task-related change in the examined frontal brain networks. Our objective was to assess the impact of SD on static FC in the prefrontal and motor cortices and find whether changes in FC correlate with changes in neuropsychological scores. Healthy young male individuals (n = 10, 27.6 ± 3.7 years of age) participated in the study. A battery of tests from the Cambridge Neuropsychological Test Automated Battery (CANTAB) and 48 channel functional near-infrared spectroscopy (fNIRS) measurements were performed before and after 24 hr of SD. Network metrics were obtained by graph theoretical analysis using the fNIRS records in resting state and during finger-tapping sessions. During task, SD resulted in a significantly smaller decrease in the number and strength of functional connections (characterizing FC) in the frontal cortex. Changes in the global connection strengths correlated with decreased performance in the paired association learning test. These results indicate a global impact of SD on functional brain networks in the frontal lobes.
Collapse
Affiliation(s)
- Peter Mukli
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- Department of PhysiologyFaculty of MedicineSemmelweis UniversityBudapestHungary
- International Training Program in GeroscienceDoctoral School of Basic and Translational Medicine/Department of Public HealthSemmelweis UniversityBudapestHungary
| | - Tamas Csipo
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- International Training Program in GeroscienceDoctoral School of Basic and Translational Medicine/Department of Public HealthSemmelweis UniversityBudapestHungary
- Division of Clinical PhysiologyDepartment of CardiologyFaculty of MedicineUniversity of DebrecenDebrecenHungary
| | - Agnes Lipecz
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- International Training Program in GeroscienceDoctoral School of Basic and Translational Medicine/Department of Public HealthSemmelweis UniversityBudapestHungary
- Department of OphthalmologyJosa Andras HospitalNyiregyhazaHungary
| | - Orestis Stylianou
- Department of PhysiologyFaculty of MedicineSemmelweis UniversityBudapestHungary
- Institute of Translational MedicineSemmelweis UniversityBudapestHungary
| | - Frigyes Samuel Racz
- Department of PhysiologyFaculty of MedicineSemmelweis UniversityBudapestHungary
| | - Cameron D. Owens
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Jonathan W. Perry
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Stefano Tarantini
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- International Training Program in GeroscienceDoctoral School of Basic and Translational Medicine/Department of Public HealthSemmelweis UniversityBudapestHungary
- Department of Health Promotion SciencesCollege of Public HealthUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Farzaneh A. Sorond
- Division of Stroke and Neurocritical CareDepartment of NeurologyNorthwestern University Feinberg School of MedicineChicagoILUSA
| | - Jeremy M. Kellawan
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- Department of Health and Exercise ScienceUniversity of OklahomaNormanOKUSA
| | - György Purebl
- Institute of Behavioral SciencesSemmelweis UniversityBudapestHungary
| | - Yuan Yang
- Stephenson School of Biomedical EngineeringThe University of OklahomaTulsaOKUSA
| | - William E. Sonntag
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Anna Csiszar
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- International Training Program in GeroscienceTheoretical Medicine Doctoral School/Departments of Cell Biology and Molecular Medicine and Medical Physics and InformaticsUniversity of SzegedSzegedHungary
| | - Zoltan I. Ungvari
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- International Training Program in GeroscienceDoctoral School of Basic and Translational Medicine/Department of Public HealthSemmelweis UniversityBudapestHungary
- Department of Health Promotion SciencesCollege of Public HealthUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
- International Training Program in GeroscienceTheoretical Medicine Doctoral School/Departments of Cell Biology and Molecular Medicine and Medical Physics and InformaticsUniversity of SzegedSzegedHungary
| | - Andriy Yabluchanskiy
- Oklahoma Center for Geroscience and Healthy Brain AgingDepartment of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| |
Collapse
|
12
|
Abstract
Abstract
Purpose of Review
Obstructive sleep apnoea (OSA) is increasingly found to have an impact on neurodegeneration. In this review, we summarise recent findings on the association between OSA and brain morphology, cognition, and processes related to Alzheimer’s dementia (AD) and Parkinson’s disease (PD).
Recent Findings
Associations between OSA and alterations in grey and white matter, brain diffusivity, and deficits in memory, attention, and executive control were reported. Furthermore, OSA was correlated with higher risks of developing AD and PD and associated pathophysiology. Treatment was found to alleviate but not reverse some of the damage.
Summary
There are strong indications that OSA plays a major role in neurodegenerative processes. The broad picture however remains elusive, likely due to insufficient sample sizes, heterogeneous outcomes, and OSA definitions failing to quantify the disorder’s sub-processes. While studies resolving these issues are required, the available evidence shows OSA to be a promising target to slow neurodegeneration and delay the onset of related disorders.
Collapse
|
13
|
Sericin protects against acute sleep deprivation-induced memory impairment via enhancement of hippocampal synaptic protein levels and inhibition of oxidative stress and neuroinflammation in mice. Brain Res Bull 2021; 174:203-211. [PMID: 34153383 DOI: 10.1016/j.brainresbull.2021.06.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/16/2021] [Accepted: 06/16/2021] [Indexed: 01/07/2023]
Abstract
Sleep deprivation (SD) induces learning and memory deficits via inflammatory responses and oxidative stress. On the other hand, sericin (Ser) possesses potent antioxidant and neuroprotective effects. We investigated the effect of different doses of Ser on the SD-induced cognitive impairment. Ser (100, 200, and 300 mg/kg) was administered to animals via oral gavage for 8 days, 5 days before to SD, and during SD. SD was induced in mice using a modified multiple platform model, starting on the 6th day for 72 h. Spatial learning and memory were assessed using the Lashley III maze. Serum corticosterone level, and hippocampal malondialdehyde (MDA), total antioxidant capacity (TAC), and the activity of superoxide dismutase (SOD) and glutathione peroxidase (GPx) enzymes were evaluated. The expression of growth-associated protein 43 (GAP-43), post-synaptic density-95 (PSD-95), synapsin 1 (SYN-1), and synaptophysin (SYP), and inflammation markers were detected by western blotting. SD caused cognitive impairment, while Ser pretreatment prevented such an effect. Serum corticosterone also increased with SD, but its levels were suppressed in SD mice receiving Ser. Furthermore, Ser normalized SD-induced reduction in the hippocampus activity of SOD and GPx, increased TAC, and decreased MDA levels. Besides, Ser pretreatment increased GAP-34, SYP, SYN-I, and PSD-95 and reduced IL1-β and TNF-α in the hippocampus. SD induced memory impairment and pretreatment with Ser improved memory via its antioxidant, anti-inflammation, and up-regulation of synaptic proteins in the hippocampus.
Collapse
|
14
|
Kishore K, Cusimano MD. The Fundamental Need for Sleep in Neurocritical Care Units: Time for a Paradigm Shift. Front Neurol 2021; 12:637250. [PMID: 34220667 PMCID: PMC8248989 DOI: 10.3389/fneur.2021.637250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 04/27/2021] [Indexed: 11/30/2022] Open
Abstract
Intensive neurological assessments in neurocritical care settings for unduly prolonged period result in profound sleep deprivation in those patients that confounds the true neurological status of these patients, and the mounting apprehension in providers can beget a vicious cycle of even more intensive neurological assessments resulting in further sleep deprivation from being constantly woken up to be “assessed.” This iatrogenic state drives these patients into deep sleep stages that impact spontaneous breathing trials, weaken immunity, and lead to unwarranted investigations and interventions. There is dwindling value of prolonged frequent neurochecks beyond the initial 24–48 h of an intracranial event. We insist that sleep must be considered on at least an equal par to other functions that are routinely assessed. We reason that therapeutic sleep must be allowed to these patients in suitable amounts especially beyond the first 36–48 h to achieve ideal and swift recovery. This merits a paradigm shift.
Collapse
Affiliation(s)
- Kislay Kishore
- Division of Neurosurgery, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada
| | - Michael D Cusimano
- Division of Neurosurgery, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
15
|
Eldele E, Chen Z, Liu C, Wu M, Kwoh CK, Li X, Guan C. An Attention-Based Deep Learning Approach for Sleep Stage Classification With Single-Channel EEG. IEEE Trans Neural Syst Rehabil Eng 2021; 29:809-818. [PMID: 33909566 DOI: 10.1109/tnsre.2021.3076234] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Automatic sleep stage mymargin classification is of great importance to measure sleep quality. In this paper, we propose a novel attention-based deep learning architecture called AttnSleep to classify sleep stages using single channel EEG signals. This architecture starts with the feature extraction module based on multi-resolution convolutional neural network (MRCNN) and adaptive feature recalibration (AFR). The MRCNN can extract low and high frequency features and the AFR is able to improve the quality of the extracted features by modeling the inter-dependencies between the features. The second module is the temporal context encoder (TCE) that leverages a multi-head attention mechanism to capture the temporal dependencies among the extracted features. Particularly, the multi-head attention deploys causal convolutions to model the temporal relations in the input features. We evaluate the performance of our proposed AttnSleep model using three public datasets. The results show that our AttnSleep outperforms state-of-the-art techniques in terms of different evaluation metrics. Our source codes, experimental data, and supplementary materials are available at https://github.com/emadeldeen24/AttnSleep.
Collapse
|
16
|
Sleep parameters improvement in PTSD soldiers after symptoms remission. Sci Rep 2021; 11:8873. [PMID: 33893376 PMCID: PMC8065125 DOI: 10.1038/s41598-021-88337-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 04/06/2021] [Indexed: 11/08/2022] Open
Abstract
Eye movement desensitization and reprocessing (EMDR) is a psychotherapy for the treatment of posttraumatic stress disorder (PTSD). It is still unclear whether symptoms remission through EMDR therapy is associated with a beneficial effect on one of the PTSD symptoms, sleep disturbance. Our objective was therefore to study sleep parameters before and after symptom remission in soldiers with PTSD. The control group consisted of 20 healthy active duty military men who slept in a sleep lab with standard polysomnography (PSG) on two sessions separated by one month. The patient group consisted of 17 active duty military with PTSD who underwent EMDR therapy. PSG-recorded sleep was assessed 1 week before the EMDR therapy began and 1 week after PTSD remission. We found that the increased REMs density after remission was positively correlated with a greater decrease of symptoms. Also, the number of EMDR sessions required to reach remission was correlated with intra-sleep awakenings before treatment. These results confirm the improvement of some sleep parameters in PTSD after symptoms remission in a soldier's population and provide a possible predictor of treatment success. Further experiments will be required to establish whether this effect is specific to the EMDR therapy.
Collapse
|
17
|
Abstract
Sleep inertia (SI) refers to a complex psychophysiological phenomenon, observed after awakening, that can be described as the gradual recovery of waking-like status. The time course of cognitive performance dissipation in an everyday life condition is still unclear, especially in terms of the sleep stage at awakening (REM or NREM-stage 2) and the relative effects on performance. The present study aimed to investigate the SI dissipation in different memory performances upon spontaneous morning awakening after uninterrupted nighttime sleep. Eighteen young adults (7 females; mean age 24.9 ± 3.14 years) spent seven non-consecutive nights (one baseline, three REM awakenings and three St2 awakenings) in the laboratory under standard polysomnographic (PSG) control. Participants were tested after three REM awakenings and three St2 awakenings, and three times at 11:00 a.m. as a control condition. In each testing session, participants filled in the Global Vigor and Affect Scale and carried out one memory task (episodic, semantic, or procedural task). For each condition, participants were tested every 10 min within a time window of 80 min. In accordance with previous studies, SI affected subjective alertness throughout the entire time window assessed. Moreover, SI significantly affected performance speed but not accuracy in the semantic task. With reference to this task, the SI effect dissipated within 30 min of awakening from REM, and within 20 min of awakening from St2. No significant SI effect was observed on episodic or procedural memory tasks.
Collapse
|
18
|
Okuda M, Noda A, Mabuchi S, Iwamoto K, Banno M, Miyata S, Yasuma F, Ozaki N. Sleep fragmentation and working memory in healthy adults. Sleep Sci 2021; 14:111-117. [PMID: 35082979 PMCID: PMC8764943 DOI: 10.5935/1984-0063.20200088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 12/08/2020] [Indexed: 12/05/2022] Open
Abstract
Introduction Sleep is essential for performing cognitive function in humans. We have hypothesized that sleep fragmentation compared to sleep efficiency may have a negative impact on the working memory. Material and Methods Twenty-eight healthy adults (18 males and 10 females; mean age 27.8±15.5 years) were enrolled in this study. We measured the total sleep time (TST), sleep efficiency, %stage wakefulness (W), %stage rapid eye movement (REM), %stage N1, %stage N2, %stage N3, wake after sleep onset (WASO), and arousal index using polysomnography. Working memory, executive function, and sustained attention of three domains of cognitive function were evaluated with the number of back task (N-back task), Wisconsin card sorting test (WCST), and continuous performance test-identical pairs (CPT-IP), respectively. Results The percentage of correct answers on the 2-back task was significantly correlated with %stage REM, %stage N1, and %stage N2 (%stage REM: r=0.505, p=0.006; %stage N1: r=-0.637, p<0.001; %stage N2: r=0.670, p<0.001), and multiple regression analysis including the stepwise forward selection method revealed that %stage N2 was the most significant factor (%stage N2: β=0.670, p<0.001). The percentage of correct answers on the 2-back task was also significantly correlated with TST, sleep efficiency, WASO, and arousal index (TST: r=0.492, p=0.008; sleep efficiency: r=0.622, p<0.001; WASO: r=-0.721, p<0.001; arousal index: r=-0.656, p<0.001), and WASO was the significant factor (β=-2.086, p=0.007). The WCST category achievement and CPT-IP d-prime score were correlated with none of the sleep variables. Conclusion Increased WASO and a decrease in %stage N2 were associated with worse working memory.
Collapse
Affiliation(s)
- Masato Okuda
- Chubu University Graduate School of Life and Health Sciences, Department of Biomedical Sciences - Kasugai - Aichi - Japan
| | - Akiko Noda
- Chubu University Graduate School of Life and Health Sciences, Department of Biomedical Sciences - Kasugai - Aichi - Japan
| | - Sho Mabuchi
- Chubu University Collage of Life and Health Sciences, Department of Biomedical Sciences -Kasugai - Aichi- Japan
| | - Kunihiro Iwamoto
- Nagoya University Graduate School of Medicine, Department of Psychiatry - Nagoya - Aichi -Japan
| | - Masahiro Banno
- Nagoya University Graduate School of Medicine, Department of Psychiatry - Nagoya - Aichi -Japan.,Seichiryo Hospital, Department of Psychiatry - Nagoya - Aichi - Japan
| | - Seiko Miyata
- Nagoya University Graduate School of Medicine, Department of Psychiatry - Nagoya - Aichi -Japan
| | - Fumihiko Yasuma
- National Hospital Organization Suzuka Hospital, Department of Internal Medicine - Suzuka - Mie -Japan
| | - Norio Ozaki
- Nagoya University Graduate School of Medicine, Department of Psychiatry - Nagoya - Aichi -Japan
| |
Collapse
|
19
|
Sahin L, Cevik OS, Cevik K, Guven C, Taskin E, Kocahan S. Mild regular treadmill exercise ameliorated the detrimental effects of acute sleep deprivation on spatial memory. Brain Res 2021; 1759:147367. [PMID: 33582122 DOI: 10.1016/j.brainres.2021.147367] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 01/06/2023]
Abstract
Vulnerable areas like the hippocampus are sensitive to insults such as sleep deprivation (SD); they are also susceptible to environmental enrichment. Much evidence is accumulating that chronic sleep deprivation causes alterations in the hippocampus that responsible for spatial memory. However, there is conflicting about the differences between acute and chronic SD results. The purpose of this study was to determine the protective effects of mild treadmill exercise on acute SD rats. Four groups were created as control, exercise, sleep deprivation, exercise + sleep deprivation. Multiple platforms method was used to induce REM sleep deprivation (RD) for 48 h. The exercise was applied fivedaysperweekforfour weeks(5 × 4). For the first and second weeks, the length of the exercise was 15 min in two sessions (5 min interval) followed by 15 min in three, 15 min in four sessions. Morris water maze (MWM) was used as a spatial memory test. Gene level was determined by using the qPCR technique. Malondialdehyde (MDA) content in the hippocampus was measured as an extent of peroxidative damage to lipids by using the ELISA method. 48 h RD impaired long-term spatial memory significantly. Mild, regular treadmill exercise ameliorated the detrimental effects of acute sleep deprivation on memory. There was no significant difference in MDA between groups. Hippocampal gene expression did not show any changes in all groups. Lack of correlation between memory impairment and levels of genes in the hippocampus is likely to be related to the differences in behavioral and genetic mechanisms.
Collapse
Affiliation(s)
- Leyla Sahin
- Mersin University, Faculty of Medicine, Physiology, Mersin, Turkey.
| | - Ozge Selin Cevik
- Mersin University, Faculty of Medicine, Physiology, Mersin, Turkey
| | - Kenan Cevik
- Mersin University, Faculty of Medicine, Medical Biology, Mersin, Turkey
| | - Celal Guven
- Ömer Halis Demir University, Faculty of Medicine, Physiology, Niğde, Turkey
| | - Eylem Taskin
- Ömer Halis Demir University, Faculty of Medicine, Physiology, Niğde, Turkey
| | - Sayad Kocahan
- Adıyaman University, Faculty of Medicine, Physiology, Adıyaman, Turkey
| |
Collapse
|
20
|
Laniepce A, Lahbairi N, Cabé N, Pitel AL, Rauchs G. Contribution of sleep disturbances to the heterogeneity of cognitive and brain alterations in alcohol use disorder. Sleep Med Rev 2021; 58:101435. [PMID: 33578081 DOI: 10.1016/j.smrv.2021.101435] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/22/2020] [Accepted: 10/27/2020] [Indexed: 12/28/2022]
Abstract
Cognitive and brain alterations are common in alcohol use disorder and vary importantly from one patient to another. Sleep disturbances are also very frequent in these patients and remain largely neglected even though they can persist after drinking cessation. Sleep disturbances may be the consequence of specific brain alterations, resulting in cognitive impairments. But sleep disruption may also exacerbate alcohol-related brain abnormalities and cognitive deficits through common pathophysiological mechanisms. Besides, sleep disturbances seem a vulnerability factor for the development of alcohol use disorder. From a clinical perspective, sleep disturbances are known to affect treatment outcome and to increase the risk of relapse. In this article, we conducted a narrative review to provide a better understanding of the relationships between sleep disturbances, brain and cognition in alcohol use disorder. We suggest that the heterogeneity of brain and cognitive alterations observed in patients with alcohol use disorder could at least partially be explained by associated sleep disturbances. We also believe that sleep disruption could indirectly favor relapse by exacerbating neuropsychological impairments required in psychosocial treatment and for the maintenance of abstinence. Implications for clinical practice as well as perspectives for future research are proposed.
Collapse
Affiliation(s)
- Alice Laniepce
- Normandie Univ, UNICAEN, PSL Université de Paris, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France
| | - Najlaa Lahbairi
- Normandie Univ, UNICAEN, PSL Université de Paris, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France
| | - Nicolas Cabé
- Normandie Univ, UNICAEN, PSL Université de Paris, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France; Service d'Addictologie, Centre Hospitalier Universitaire de Caen, 14000 Caen, France
| | - Anne-Lise Pitel
- Normandie Univ, UNICAEN, PSL Université de Paris, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France; Institut Universitaire de France (IUF), France
| | - Géraldine Rauchs
- Normandie Univ, UNICAEN, PSL Université de Paris, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France.
| |
Collapse
|
21
|
Thompson K, Gibbings A, Shaw J, Ray L, Hébert G, De Koninck J, Fogel S. Sleep and Second-Language Acquisition Revisited: The Role of Sleep Spindles and Rapid Eye Movements. Nat Sci Sleep 2021; 13:1887-1902. [PMID: 34703346 PMCID: PMC8536881 DOI: 10.2147/nss.s326151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/01/2021] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION Second-language learning (SLL) depends on distinct functional-neuroanatomical systems including procedural and declarative long-term memory. Characteristic features of rapid eye movement (REM) and non-REM sleep such as rapid eye movements and sleep spindles are electrophysiological markers of cognitively complex procedural and declarative memory consolidation, respectively. In adults, grammatical learning depends at first on declarative memory ("early SLL") then shifts to procedural memory with experience ("late SLL"). However, it is unknown if the shift from declarative to procedural memory in early vs late SLL is supported by sleep. Here, we hypothesized that increases in sleep spindle characteristics would be associated with early SLL, whereas increases in REM activity (eg, density and EEG theta-band activity time-locked to rapid eye movements) would be associated with late SLL. METHODS Eight Anglophone (English first language) participants completed four polysomnographic recordings throughout an intensive 6-week French immersion course. Sleep spindle data and electroencephalographic spectral power time-locked to rapid eye movements were extracted from parietal temporal electrodes. RESULTS As predicted, improvements in French proficiency were associated with changes in spindles during early SLL. Furthermore, we observed increased event-related theta power time-locked to rapid eye movements during late SLL compared with early SLL. The increases in theta power were significantly correlated with improvements in French proficiency. DISCUSSION This supports the notion that sleep spindles are involved in early SLL when grammar depends on declarative memory, whereas cortical theta activity time-locked to rapid eye movements is involved in late SLL when grammar depends on procedural memory.
Collapse
Affiliation(s)
| | - Aaron Gibbings
- School of Psychology, University of Ottawa, Ottawa, ON, Canada.,Sleep Unit, University of Ottawa Institute of Mental Health at the Royal, Ottawa, ON, Canada
| | - James Shaw
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Laura Ray
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Gilles Hébert
- School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Joseph De Koninck
- School of Psychology, University of Ottawa, Ottawa, ON, Canada.,University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Stuart Fogel
- School of Psychology, University of Ottawa, Ottawa, ON, Canada.,Sleep Unit, University of Ottawa Institute of Mental Health at the Royal, Ottawa, ON, Canada.,University of Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, ON, Canada
| |
Collapse
|
22
|
Wilson DL, Barnes M, Ellett L, Permezel M, Jackson M, Crowe SF. Reduced Verbal Memory Retention is Unrelated to Sleep Disturbance During Pregnancy. AUSTRALIAN PSYCHOLOGIST 2020. [DOI: 10.1111/j.1742-9544.2012.00076.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danielle L Wilson
- School of Psychological Science, La Trobe University
- Institute for Breathing and Sleep, Austin Health
| | - Maree Barnes
- Institute for Breathing and Sleep, Austin Health
- Department of Medicine, University of Melbourne
| | - Lenore Ellett
- Department of Obstetrics and Gynaecology, Mercy Hospital for Women
| | - Michael Permezel
- Department of Obstetrics and Gynaecology, Mercy Hospital for Women
- Department of Obstetrics and Gynaecology, University of Melbourne
| | | | - Simon F Crowe
- School of Psychological Science, La Trobe University
| |
Collapse
|
23
|
Bueno-Lopez A, Eggert T, Dorn H, Schmid G, Hirtl R, Danker-Hopfe H. Effects of 2.45 GHz Wi-Fi exposure on sleep-dependent memory consolidation. J Sleep Res 2020; 30:e13224. [PMID: 33166026 DOI: 10.1111/jsr.13224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/07/2020] [Accepted: 10/07/2020] [Indexed: 12/24/2022]
Abstract
Studies have reported that exposure to radiofrequency electromagnetic fields (RF-EMF) emitted by mobile telephony might affect specific sleep features. Possible effects of RF-EMF emitted by Wi-Fi networks on sleep-dependent memory consolidation processes have not been investigated so far. The present study explored the impact of an all-night Wi-Fi (2.45 GHz) exposure on sleep-dependent memory consolidation and its associated physiological correlates. Thirty young males (mean ± standard deviation [SD]: 24.1 ± 2.9 years) participated in this double-blind, randomized, sham-controlled crossover study. Participants spent five nights in the laboratory. The first night was an adaptation/screening night. The second and fourth nights were baseline nights, each followed consecutively by an experimental night with either Wi-Fi (maximum: psSAR10g = <25 mW/kg; 6 min average: <6.4 mW/kg) or sham exposure. Declarative, emotional and procedural memory performances were measured using a word pair, a sequential finger tapping and a face recognition task, respectively. Furthermore, learning-associated brain activity parameters (power spectra for slow oscillations and in the spindle frequency range) were analysed. Although emotional and procedural memory were not affected by RF-EMF exposure, overnight improvement in the declarative task was significantly better in the Wi-Fi condition. However, none of the post-learning sleep-specific parameters was affected by exposure. Thus, the significant effect of Wi-Fi exposure on declarative memory observed at the behavioural level was not supported by results at the physiological level. Due to these inconsistencies, this result could also be a random finding.
Collapse
Affiliation(s)
- Ana Bueno-Lopez
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Competence Center of Sleep Medicine, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Torsten Eggert
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Competence Center of Sleep Medicine, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Hans Dorn
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Competence Center of Sleep Medicine, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| | | | - Rene Hirtl
- Seibersdorf Laboratories, Seibersdorf, Austria
| | - Heidi Danker-Hopfe
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Competence Center of Sleep Medicine, Berlin Institute of Health, Humboldt-Universität zu Berlin, Berlin, Germany
| |
Collapse
|
24
|
Hong J, Ha GE, Kwak H, Lee Y, Jeong H, Suh PG, Cheong E. Destabilization of light NREM sleep by thalamic PLCβ4 deletion impairs sleep-dependent memory consolidation. Sci Rep 2020; 10:8813. [PMID: 32483199 PMCID: PMC7264240 DOI: 10.1038/s41598-020-64377-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 04/15/2020] [Indexed: 01/20/2023] Open
Abstract
Sleep abnormality often accompanies the impairment of cognitive function. Both rapid eye movement (REM) and non-REM (NREM) sleep have associated with improved memory performance. However, the role of composition in NREM sleep, consisting of light and deep NREM, for memory formation is not fully understood. We investigated how the dynamics of NREM sleep states influence memory consolidation. Thalamocortical (TC) neuron-specific phospholipase C β4 (PLCβ4) knockout (KO) increased the total duration of NREM sleep, consisting of destabilized light NREM and stabilized deep NREM. Surprisingly, the longer NREM sleep did not improve memory consolidation but rather impaired it in TC-specific PLCβ4 KO mice. Memory function was positively correlated with the stability of light NREM and spindle activity occurring in maintained light NREM period. Our study suggests that a single molecule, PLCβ4, in TC neurons is critical for tuning the NREM sleep states and thus affects sleep-dependent memory formation.
Collapse
Affiliation(s)
- Joohyeon Hong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Go Eun Ha
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hankyul Kwak
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Yelin Lee
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hyeonyeong Jeong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Pann-Ghill Suh
- School of Life Science, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
- Korea Brain Research Institute, Daegu, 41062, Republic of Korea
| | - Eunji Cheong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea.
| |
Collapse
|
25
|
Zhu T, Zhou J, Zhou J, Feng L, Yang J, Wang G. High-frequency cardiopulmonary coupling during sleep correlates with memory in depressed patients: A pilot study. J Affect Disord 2020; 270:118-123. [PMID: 32339101 DOI: 10.1016/j.jad.2020.03.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 01/03/2020] [Accepted: 03/22/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND It has been demonstrated that a reduction in the amount of high-frequency cardiopulmonary coupling (CPC) is indicative of unstable sleep in unmedicated patients with major depressive disorder (MDD). Considering the close relationship between sleep quality and memory consolidation, this study sought to investigate the potential of high-frequency CPC as a novel biomarker for objective evaluation of memory impairment in MDD. METHODS A total of 64 depressed patients and 35 healthy controls were included in this cross-sectional study. High-frequency coupling (HFC) was assessed by electrocardiogram-based CPC analysis using a portable sleep-respiration monitor during sleep for one night. The next day, subjects completed the cognition assessment with the Assessment of Neuropsychological Status (RBANS). The 17-Item Hamilton Depression Rating Scale (HAMD17) and the Hamilton Rating Scales for Anxiety (HAMA) were used to evaluate the severity of depression and anxiety in each patient, respectively. RESULTS There was no significant difference in the proportion of HFC between depressed patients and healthy controls. In patients with low HFC proportion (<35%), severe anxiety could significantly decrease HFC proportion. The HFC proportion positively correlated with immediate and delayed memory in depressed patients. Further analysis showed that patients with low HFC proportion may have worse delayed memory. LIMITATIONS The lack of prior exposure to the monitoring equipment and procedure could have generated artefacts that would have disappeared after habituation. CONCLUSIONS These results support a positive correlation between the HFC proportion and memory in depressed patients. Further research is required to explore the clinical implications of these findings.
Collapse
Affiliation(s)
- Tong Zhu
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Jingjing Zhou
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Jia Zhou
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Lei Feng
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Jian Yang
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China.
| | - Gang Wang
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| |
Collapse
|
26
|
Peng Z, Dai C, Ba Y, Zhang L, Shao Y, Tian J. Effect of Sleep Deprivation on the Working Memory-Related N2-P3 Components of the Event-Related Potential Waveform. Front Neurosci 2020; 14:469. [PMID: 32508572 PMCID: PMC7248549 DOI: 10.3389/fnins.2020.00469] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/15/2020] [Indexed: 11/13/2022] Open
Abstract
Working memory is very sensitive to acute sleep deprivation, and many studies focus on the brain areas or network activities of working memory after sleep deprivation. However, little is known about event-related potential (ERP)-related changes in working memory after sleep loss. The purpose of this research was to explore the effects of 36 h of total sleep deprivation (TSD) on working memory through ERPs. Sixteen healthy college students performed working memory tasks while rested and after 36 h of TSD, and electroencephalography (EEG) data were simultaneously recorded while the subjects completed working memory tasks that included different types of stimulus materials. ERP data were statistically analyzed using repeated measurements analysis of variance to observe the changes in the working memory-related N2-P3 components. Compared with baseline before TSD, the amplitude of N2-P3 components related to working memory decreased, and the latency was prolonged after TSD. However, the increased amplitude of the P2 wave and the prolonged latency were found after 36 h of TSD. Thus, TSD can impair working memory capacity, which is characterized by lower amplitude and prolonged latency.
Collapse
Affiliation(s)
- Ziyi Peng
- School of Psychology, Beijing Sport University, Beijing, China
| | - Cimin Dai
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yi Ba
- School of Psychology, Beijing Sport University, Beijing, China
| | - Liwei Zhang
- Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - Yongcong Shao
- School of Psychology, Beijing Sport University, Beijing, China
| | - Jianquan Tian
- Naval Special Forces Recuperation Center, Qingdao, China
| |
Collapse
|
27
|
Baati H, Chtourou H, Moalla W, Jarraya M, Nikolaidis PT, Rosemann T, Knechtle B. Effect of Angle of View and Partial Sleep Deprivation on Distance Perception. Front Psychol 2020; 11:201. [PMID: 32218750 PMCID: PMC7078342 DOI: 10.3389/fpsyg.2020.00201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 01/29/2020] [Indexed: 01/04/2023] Open
Abstract
The present study aimed to investigate the effects of intensive effort on egocentric distance perception according to different angles of view after sleep deprivation at the beginning (SDB) or at the end (SDE) of the night and after a normal sleep night (NNS). Ten male students soccer players (age 22.8 ± 1.3 years; body mass 72.0 ± 10.4 kg; body height 180.0 ± 3.0 cm) performed a repeated cycling (RS) exercise (10 × 6 s maximal cycling with 24 s in between) after SDB, SDE, and NNS. They were asked to estimate three distances (i.e. 15, 25, and 35 m) before and after RS from different angles of view [i.e. in front (0°) and in side (45° left and 45° right)]. For 35 m, distance estimation was better during NNS compared to SDB and SDE for the front and the two side angles either before or after RS (p < 0.05). Concerning 25 m, distance estimation was better after compared to before RS for the front angle during the NNS session (p < 0.05). For 15 m, distance estimation was better during NNS than SDB and SDE for the front and both side angles after RS (p < 0.05). We concluded that partial sleep deprivation negatively affected the estimation of the egocentric distance for the three angles of view either at rest or after RS exercise.
Collapse
Affiliation(s)
- Hamza Baati
- LR18JS01: Education, Motricité, Sport et Santé, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
| | - Hamdi Chtourou
- Activité Physique, Sport et Santé, UR18JS01, Observatoire National du Sport, Tunis, Tunisia.,Institut Supérieur du Sport et de l'Education Physique de Sfax, Université de Sfax, Sfax, Tunisia
| | - Wassim Moalla
- LR18JS01: Education, Motricité, Sport et Santé, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
| | - Mohamed Jarraya
- LR18JS01: Education, Motricité, Sport et Santé, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia.,Institut Supérieur du Sport et de l'Education Physique de Sfax, Université de Sfax, Sfax, Tunisia
| | | | - Thomas Rosemann
- Institute of Primary Care, University Hospital Zurich, Zurich, Switzerland
| | - Beat Knechtle
- Institute of Primary Care, University Hospital Zurich, Zurich, Switzerland.,Medbase St. Gallen Am Vadianplatz, St. Gallen, Switzerland
| |
Collapse
|
28
|
Marshall L, Cross N, Binder S, Dang-Vu TT. Brain Rhythms During Sleep and Memory Consolidation: Neurobiological Insights. Physiology (Bethesda) 2020; 35:4-15. [DOI: 10.1152/physiol.00004.2019] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Sleep can benefit memory consolidation. The characterization of brain regions underlying memory consolidation during sleep, as well as their temporal interplay, reflected by specific patterns of brain electric activity, is surfacing. Here, we provide an overview of recent concepts and results on the mechanisms of sleep-related memory consolidation. The latest studies strongly impacting future directions of research in this field are highlighted.
Collapse
Affiliation(s)
- Lisa Marshall
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Luebeck, Luebeck, Germany
- Center for Brain, Behavior and Metabolism, University of Luebeck, Luebeck, Germany
| | - Nathan Cross
- Perform Center, Center for Studies in Behavioral Neurobiology, and Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Quebec, Canada
- Centre de Recherche de l’Institut Universitaire de Gériatrie de Montréal, CIUSSS Centre-Sud-de-l’Ile-de-Montréal, Montreal, Quebec, Canada
| | - Sonja Binder
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Luebeck, Luebeck, Germany
- Center for Brain, Behavior and Metabolism, University of Luebeck, Luebeck, Germany
| | - Thien Thanh Dang-Vu
- Perform Center, Center for Studies in Behavioral Neurobiology, and Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Quebec, Canada
- Centre de Recherche de l’Institut Universitaire de Gériatrie de Montréal, CIUSSS Centre-Sud-de-l’Ile-de-Montréal, Montreal, Quebec, Canada
| |
Collapse
|
29
|
Vallat R, Ruby PM. Is It a Good Idea to Cultivate Lucid Dreaming? Front Psychol 2019; 10:2585. [PMID: 31803118 PMCID: PMC6874013 DOI: 10.3389/fpsyg.2019.02585] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 10/31/2019] [Indexed: 11/29/2022] Open
Affiliation(s)
- Raphael Vallat
- Department of Psychology, Center for Human Sleep Science, University of California, Berkeley, Berkeley, CA, United States.,DYCOG Team, Lyon Neuroscience Research Center, CNRS UMR 5292 - INSERM U1028 - Lyon 1 University, Bron, France
| | - Perrine Marie Ruby
- DYCOG Team, Lyon Neuroscience Research Center, CNRS UMR 5292 - INSERM U1028 - Lyon 1 University, Bron, France
| |
Collapse
|
30
|
Incorporation of fragmented visuo-olfactory episodic memory into dreams and its association with memory performance. Sci Rep 2019; 9:15687. [PMID: 31666536 PMCID: PMC6821835 DOI: 10.1038/s41598-019-51497-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 09/26/2019] [Indexed: 01/10/2023] Open
Abstract
The question of a possible link between dream content and memory consolidation remains open. After a comprehensive review of the literature, we present novel findings from an experiment testing whether the incorporation of recently learned stimuli into dream reports is associated with improved post-sleep memory performance. Thirty-two high dream recallers freely explored new visuo-olfactory episodes for 3 consecutive days. During the nights following each non-explicit encoding, participants wore a wrist actimeter, and woke up at 5am and their usual waking time to record their dreams (intensity of all oneiric sensory perception was assessed using scales). A total of 120 dreams were reported and elements related to the encoding phase were identified in 37 of them, either learning-related (mainly visual- and rarely olfactory-related elements), or experiment-related (lab- or experimenters-related elements). On the 4th day, we found that participants with learning-related (n = 16) and participants with learning-related and/or experiment-related dreams (n = 21) had similar odor recognition and odor-evoked episodic memory with the other participants. However, they had significantly better visuo-spatial memory of the episodes in comparison to the other participants. Our results support the hypothesis that the learning phase is loosely incorporated into dreams and that this incorporation is associated with sleep related memory consolidation.
Collapse
|
31
|
Lee NC, Hsu WC, Chang LM, Chen YC, Huang PT, Chien CC, Chien YH, Chen CL, Hwu WL, Lee PL. REM sleep and sleep apnea are associated with language function in Down syndrome children: An analysis of a community sample. J Formos Med Assoc 2019; 119:516-523. [PMID: 31378642 DOI: 10.1016/j.jfma.2019.07.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/25/2019] [Accepted: 07/16/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The prevalence rate of obstructive sleep apnea (OSA) in the community Down syndrome (DS) children is not clear. Moreover, the impact of OSA and sleep structure on the cognitive function is inconclusive. The present study aimed to investigate 1) the prevalence rate of OSA in the community DS children and 2) the impact of OSA and sleep structure on cognitive performance. METHODS Thirty DS children aged 6-18 years were recruited and evaluated with the performance of the language domain and sensorimotor domain, combining neuropsychological tests and parent-rated behavior. The outcomes were the age-adjusted scores, of which the lower the score was, the better was the patient's ability. The association of score with OSA and sleep structures was determined by linear regression. To diminish the age-related difference, all analyses were conducted separately for all subjects and 6-12-year-old subjects. RESULTS The median age was 11.3 years and median Full-Scale Intelligence Quotient (FSIQ) was 44. The prevalence of OSA (apnea-hypopnea index ≥ 1/h) was 80% and 62.5% in all subjects and 6-12-year-old subjects, respectively. For 6-12-year-old subjects, after adjustment for age and FSIQ, both %REM and OSA were associated with lower score of the subtest of language domain, WPPSI-R Vocabulary, while %REM was also associated with lower score of VABS-II Communication - Expressive. In contrary, % slow wave sleep was not associated with any subtest. CONCLUSION This study identified that OSA may be highly prevalent in community DS children. Among 6-12-year-old DS children, OSA and % REM were associated with their language function.
Collapse
Affiliation(s)
- Ni-Chung Lee
- Department of Medical Genetics and Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Wei-Chung Hsu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Lih-Maan Chang
- Clinical Psychology Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Chen Chen
- Department of Medical Genetics and Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Po-Tsang Huang
- Clinical Psychology Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Chin Chien
- Department of Medical Genetics and Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Yin-Hsiu Chien
- Department of Medical Genetics and Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Ling Chen
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Wuh-Liang Hwu
- Department of Medical Genetics and Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Pei-Lin Lee
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; Center of Sleep Disorder, National Taiwan University Hospital, Taipei, Taiwan; Center for Electronics Technology Integration, National Taiwan University, Taipei, Taiwan.
| |
Collapse
|
32
|
Rehel S, Legrand N, Lecouvey G, Laniepce A, Bertran F, Fleury P, Madeleine S, Eustache F, Desgranges B, Rauchs G. Effects of Sleep and Age on Prospective Memory Consolidation: A Walk in a Virtual Museum. Clocks Sleep 2019; 1:332-351. [PMID: 33089173 PMCID: PMC7445809 DOI: 10.3390/clockssleep1030028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 07/15/2019] [Indexed: 02/06/2023] Open
Abstract
Prospective memory (PM) refers to our ability to perform actions at the appropriate moment, either when a predetermined event occurs (event-based, EB) or after a predetermined amount of time (time-based, TB). Sleep favors the consolidation of both EB and TB intentions, but whether this benefit is preserved during ageing is still subject to debate. PM was assessed in 28 young and 27 older healthy volunteers using a virtual environment. Participants had to learn and execute intentions after intervals filled with either daytime wakefulness or nighttime sleep. Intentions consisted of four TB, four EB with a strong link between the cue triggering retrieval and the action to be performed (EB-link) and four with no link (EB-nolink). PM was not affected by age, whatever the type of intention and the nature of the retention interval. While sleep reinforced all types of intentions in young participants, this benefit was only observed for TB and EB-link intentions in older adults. Sleep also reinforced the intrinsic PM components in both groups. Thus, when assessed using complex realistic situations, PM is not impaired in ageing. Results are discussed in the light of memory schema theory and the possible impact of cognitive reserve on sleep and memory.
Collapse
Affiliation(s)
- Stéphane Rehel
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
| | - Nicolas Legrand
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
| | - Grégory Lecouvey
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
| | - Alice Laniepce
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
| | - Françoise Bertran
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
- Unité d’exploration et de traitement des troubles du sommeil, CHU, 14000 Caen, France
| | - Philippe Fleury
- Centre Interdisciplinaire de Réalité Virtuelle, UNICAEN, 14000 Caen, France
| | - Sophie Madeleine
- Centre Interdisciplinaire de Réalité Virtuelle, UNICAEN, 14000 Caen, France
| | - Francis Eustache
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
| | - Béatrice Desgranges
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
| | - Géraldine Rauchs
- Normandie Univ, UNICAEN, PSL Université Paris, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, GIP Cyceron, 14000 Caen, France
- Correspondence: ; Tel.: +33-(0)2-31-47-01-34
| |
Collapse
|
33
|
The association between sleep and dual-task performance in preterm and full-term children: an exploratory study. Sleep Med 2019; 55:100-108. [PMID: 30772694 DOI: 10.1016/j.sleep.2018.11.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/15/2018] [Accepted: 11/17/2018] [Indexed: 11/22/2022]
Abstract
OBJECTIVES The present study explored associations between sleep and children's dual-task performance using cognitive-motor dual tasks (eg, walking and talking). Previous research with older adults indicated correlations between higher gait variability and unfavorable sleep continuity variables. Based on this research, as a first objective, we investigated similar correlations in a sample of children. Second, we explored correlations between dual-task performance and dimensions of sleep architecture. Third, we tested moderating effects of prematurity on these associations. METHODS In this study, 7-to 12-year-old children were tested in dual-task situations; of those, 39 were formerly preterm, and 59 were full-term born children. They were asked to walk and simultaneously perform different cognitive tasks. Gait was measured using an electronic walkway system. Sleep was measured using in-home sleep-electroencephalography. RESULTS After accounting for age and cognition, regression analyses revealed correlations between a higher number of awakenings after sleep onset and lower dual-task performance; concerning sleep architecture, analyses revealed correlations between a higher amount of rapid-eye-movement (REM) sleep and lower gait variability. Furthermore, associations between a higher amount of slow wave sleep (SWS) and children's higher cognitive performance were found. Moderation analyses indicated no effects of prematurity. CONCLUSIONS Our exploratory study suggests that a more disrupted sleep was related to children's poorer dual-task performance. Our findings support claims that REM sleep seems more related to performance in procedural tasks whereas SWS seems more related to performance in declarative tasks, suggesting that different sleep stages may support the processing of different performance types.
Collapse
|
34
|
Béroule DG. Offline encoding impaired by epigenetic regulations of monoamines in the guided propagation model of autism. BMC Neurosci 2018; 19:80. [PMID: 30558545 PMCID: PMC6298000 DOI: 10.1186/s12868-018-0477-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 11/26/2018] [Indexed: 12/18/2022] Open
Abstract
Background
Environmental factors can modify the expression of genes, including those involved in the metabolism of neurotransmitters. Accounting for a control role of monoamine neurotransmitters, the guided propagation (GP) memory model may contribute to investigate the consequences of neuromodulation impairments on development disorders such as autism. A prenatal transient excess of ‘monoamine oxidase A’ enzyme is assumed here to trigger persistent epigenetic regulations that would induce imbalanced metabolisms of synaptic monoamines. When imported into the ‘offline’ encoding cycles of a GP model, the consequent ‘serotoninergic noise’ leads to aberrant memory structures that can be linked with autism symptoms. Results In computer experiments, different levels of uncoupling between representations of monoamines correlate with the amount of impaired GP modules, the severity of irrelevant connections, as well as network overgrowth. Two types of faulty connections are respectively assumed to underlie autism traits, namely repetitive behavior and perceptual oversensitivity. Besides computational modelling, a genetic family-tree shows how the autism sex-ratio can result from combinations of pharmacological and epigenetic features. Conclusions These results suggest that the current rise of autism is favored by three possible sources of biological masking: (1) during sleep, when cyclic variations of monoamines may undergo disrupted enzymatic activities; (2) across generations of ‘healthy carriers’ protected by the X-chromosome silencing and a specific genetic variant; (3) early in life, as long as the brain development draws on pools of neurons born when the transient enzymatic excess and its persistent epigenetic regulation overlapped, and as long as the B type of monoamine oxidase does not significantly impact dopamine. A disease-modifying therapy can be derived from this study, which involves relevant biomarkers to be first monitored over several months of clinical trial. Electronic supplementary material The online version of this article (10.1186/s12868-018-0477-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Dominique G Béroule
- LIMSI (Computer Sciences Laboratory for Mechanics and Engineering Sciences), CNRS, rue John Von Neumann, Campus Universitaire d'Orsay - Bâtiment 508, 91403, Orsay Cedex, France. .,CRIIGEN Scientific Council (Committee for Independent Research and Information on Genetic Engineering), 42 rue de Lisbonne, 75008, Paris, France.
| |
Collapse
|
35
|
Zhang W, Guo B. Freud's Dream Interpretation: A Different Perspective Based on the Self-Organization Theory of Dreaming. Front Psychol 2018; 9:1553. [PMID: 30190698 PMCID: PMC6115518 DOI: 10.3389/fpsyg.2018.01553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/06/2018] [Indexed: 11/17/2022] Open
Affiliation(s)
- Wei Zhang
- Research Institute of Moral Education/School of Psychology, Nanjing Normal University, Nanjing, China
| | - Benyu Guo
- Research Institute of Moral Education/School of Psychology, Nanjing Normal University, Nanjing, China
| |
Collapse
|
36
|
Devan BD, Berger K, McDonald RJ. The Emergent Engram: A Historical Legacy and Contemporary Discovery. Front Behav Neurosci 2018; 12:168. [PMID: 30131682 PMCID: PMC6090515 DOI: 10.3389/fnbeh.2018.00168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 07/16/2018] [Indexed: 01/10/2023] Open
Affiliation(s)
- Bryan D Devan
- Laboratory of Comparative Neuropsychology, Psychology Department, Towson University, Towson, MD, United States
| | - Kyle Berger
- Laboratory of Comparative Neuropsychology, Psychology Department, Towson University, Towson, MD, United States
| | - Robert J McDonald
- Canadian Center for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| |
Collapse
|
37
|
Cross ZR, Kohler MJ, Schlesewsky M, Gaskell MG, Bornkessel-Schlesewsky I. Sleep-Dependent Memory Consolidation and Incremental Sentence Comprehension: Computational Dependencies during Language Learning as Revealed by Neuronal Oscillations. Front Hum Neurosci 2018; 12:18. [PMID: 29445333 PMCID: PMC5797781 DOI: 10.3389/fnhum.2018.00018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 01/15/2018] [Indexed: 12/19/2022] Open
Abstract
We hypothesize a beneficial influence of sleep on the consolidation of the combinatorial mechanisms underlying incremental sentence comprehension. These predictions are grounded in recent work examining the effect of sleep on the consolidation of linguistic information, which demonstrate that sleep-dependent neurophysiological activity consolidates the meaning of novel words and simple grammatical rules. However, the sleep-dependent consolidation of sentence-level combinatorics has not been studied to date. Here, we propose that dissociable aspects of sleep neurophysiology consolidate two different types of combinatory mechanisms in human language: sequence-based (order-sensitive) and dependency-based (order-insensitive) combinatorics. The distinction between the two types of combinatorics is motivated both by cross-linguistic considerations and the neurobiological underpinnings of human language. Unifying this perspective with principles of sleep-dependent memory consolidation, we posit that a function of sleep is to optimize the consolidation of sequence-based knowledge (the when) and the establishment of semantic schemas of unordered items (the what) that underpin cross-linguistic variations in sentence comprehension. This hypothesis builds on the proposal that sleep is involved in the construction of predictive codes, a unified principle of brain function that supports incremental sentence comprehension. Finally, we discuss neurophysiological measures (EEG/MEG) that could be used to test these claims, such as the quantification of neuronal oscillations, which reflect basic mechanisms of information processing in the brain.
Collapse
Affiliation(s)
- Zachariah R Cross
- Centre for Cognitive and Systems Neuroscience, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA, Australia
| | - Mark J Kohler
- Centre for Cognitive and Systems Neuroscience, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA, Australia.,Sleep and Chronobiology Laboratory, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA, Australia
| | - Matthias Schlesewsky
- Centre for Cognitive and Systems Neuroscience, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA, Australia
| | - M G Gaskell
- Department of Psychology, University of York, York, United Kingdom
| | - Ina Bornkessel-Schlesewsky
- Centre for Cognitive and Systems Neuroscience, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA, Australia
| |
Collapse
|
38
|
Li Z, Sheth AB, Sheth BR. What drives slow wave activity during early non-REM sleep: Learning during prior wake or effort? PLoS One 2017; 12:e0185681. [PMID: 29028805 PMCID: PMC5640223 DOI: 10.1371/journal.pone.0185681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 09/07/2017] [Indexed: 11/19/2022] Open
Abstract
What is the function of sleep in humans? One claim is that sleep consolidates learning. Slow wave activity (SWA), i.e. slow oscillations of frequency < 4 Hz, has been observed in electroencephalograms (EEG) during sleep; it increases with prior wakefulness and decreases with sleep. Studies have claimed that increase in SWA in specific regions of the sleeping brain is correlated with overnight improved performance, i.e. overnight consolidation, on a demanding motor learning task. We wondered if SWA change during sleep is attributable to overnight consolidation or to metabolic demand. Participants executed out-and-back movements to a target using a pen-like cursor with their dominant hand while the target and cursor position were displayed on a screen. They trained on three different conditions on separate nights, differing in the amount and degree of rotation between the actual hand movement direction and displayed cursor movement direction. In the no-rotation (NR) condition, there was no rotation. In the single rotation (SR) condition, the amount of rotation remained the same throughout, and performance improved both across pre-sleep training and after sleep, i.e. overnight consolidation occurred; in the random rotation (RR) condition, the amount of rotation varied randomly from trial to trial, and no overnight consolidation occurred; SR and RR were cognitively demanding. The average EEG power density of SWA for the first 30 min. of non-rapid eye movement sleep after training was computed. Both SR and RR elicited increase in SWA in the parietal region; furthermore, the topographic distribution of SWA in each was remarkably similar. No correlation was found between the overnight performance improvement on SR and the SWA change in the parietal region on measures of learning. Our results argue that regulation of SWA in early sleep is associated with high levels of cognitive effort during prior wakefulness, and not just overnight consolidation.
Collapse
Affiliation(s)
- Ziyang Li
- University of Houston, Houston, TX, United States of America
| | - Aarohi B. Sheth
- Carnegie Vanguard High School, Houston, TX, United States of America
| | - Bhavin R. Sheth
- University of Houston, Houston, TX, United States of America
- * E-mail:
| |
Collapse
|
39
|
Vallat R, Chatard B, Blagrove M, Ruby P. Characteristics of the memory sources of dreams: A new version of the content-matching paradigm to take mundane and remote memories into account. PLoS One 2017; 12:e0185262. [PMID: 29020066 PMCID: PMC5636081 DOI: 10.1371/journal.pone.0185262] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 09/08/2017] [Indexed: 11/19/2022] Open
Abstract
Several studies have demonstrated that dream content is related to the waking life of the dreamer. However, the characteristics of the memory sources incorporated into dreams are still unclear. We designed a new protocol to investigate remote memories and memories of trivial experiences, both relatively unexplored in dream content until now. Upon awakening, for 7 days, participants identified the waking life elements (WLEs) related to their dream content and characterized them and their dream content on several scales to assess notably emotional valence. Thanks to this procedure, they could report WLEs from the whole lifespan, and mundane ones before they had been forgotten. Participants (N = 40, 14 males, age = 25.2 ± 7.6) reported 6.2 ± 2.0 dreams on average. For each participant, 83.4% ± 17.8 of the dream reports were related to one or more WLEs. Among all the WLEs incorporated into dreams dated by the participants (79.3 ± 19%), 40.2 ± 30% happened the day before the dream, 26.1 ± 26% the month before (the day before excluded), 15.8 ± 21% the year before the dream (the month before excluded), and 17.9 ± 24% happened more than one year before the dream. As could be expected from previous studies, the majority of the WLEs incorporated into dreams were scored as important by the dreamers. However, this was not true for incorporated WLEs dating from the day before the dream. In agreement with Freud's observations, the majority of the day residues were scored as mundane. Finally, for both positive and negative WLEs incorporated into dreams, the dreamt version of the WLE was rated as emotionally less intense than the original WLE. This result, showing that dreams tend to attenuate the emotional tone of waking-life memories towards a more neutral one, argues in favor of the emotional regulation hypothesis of dreaming.
Collapse
Affiliation(s)
- Raphael Vallat
- Lyon Neuroscience Research Center (CRNL), Brain Dynamics and Cognition Team (DYCOG), INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Benoit Chatard
- Lyon Neuroscience Research Center (CRNL), Brain Dynamics and Cognition Team (DYCOG), INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Mark Blagrove
- Swansea University, Sleep laboratory, Swansea, Wales, United Kingdom
| | - Perrine Ruby
- Lyon Neuroscience Research Center (CRNL), Brain Dynamics and Cognition Team (DYCOG), INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
- * E-mail:
| |
Collapse
|
40
|
Gervais NJ, Mong JA, Lacreuse A. Ovarian hormones, sleep and cognition across the adult female lifespan: An integrated perspective. Front Neuroendocrinol 2017; 47:134-153. [PMID: 28803147 PMCID: PMC7597864 DOI: 10.1016/j.yfrne.2017.08.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 08/07/2017] [Accepted: 08/08/2017] [Indexed: 12/22/2022]
Abstract
Loss of ovarian function in women is associated with sleep disturbances and cognitive decline, which suggest a key role for estrogens and/or progestins in modulating these symptoms. The effects of ovarian hormones on sleep and cognitive processes have been studied in separate research fields that seldom intersect. However, sleep has a considerable impact on cognitive function. Given the tight connections between sleep and cognition, ovarian hormones may influence selective aspects of cognition indirectly, via the modulation of sleep. In support of this hypothesis, a growing body of evidence indicates that the development of sleep disorders following menopause contributes to accelerated cognitive decline and dementia in older women. This paper draws from both the animal and human literature to present an integrated view of the effects of ovarian hormones on sleep and cognition across the adult female lifespan.
Collapse
Affiliation(s)
- Nicole J Gervais
- Department of Psychological and Brain Sciences, University of Massachusetts, Amherst, 135 Hicks Way, Amherst, MA 01003, United States.
| | - Jessica A Mong
- Department of Pharmacology, University of Maryland School of Medicine, 655 West Baltimore Street, Baltimore, MD 21201, United States
| | - Agnès Lacreuse
- Department of Psychological and Brain Sciences, University of Massachusetts, Amherst, 135 Hicks Way, Amherst, MA 01003, United States
| |
Collapse
|
41
|
Cognitive Performance Enhancement: Do Biofeedback and Neurofeedback Work? JOURNAL OF COGNITIVE ENHANCEMENT 2017. [DOI: 10.1007/s41465-017-0039-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
42
|
Environmental Factors Promoting Neural Plasticity: Insights from Animal and Human Studies. Neural Plast 2017; 2017:7219461. [PMID: 28740740 PMCID: PMC5504954 DOI: 10.1155/2017/7219461] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/17/2017] [Accepted: 05/10/2017] [Indexed: 11/17/2022] Open
Abstract
We do not all grow older in the same way. Some individuals have a cognitive decline earlier and faster than others who are older in years but cerebrally younger. This is particularly easy to verify in people who have maintained regular physical activity and healthy and cognitively stimulating lifestyle and even in the clinical field. There are patients with advanced neurodegeneration, such as Alzheimer's disease (AD), that, despite this, have mild cognitive impairment. What determines this interindividual difference? Certainly, it cannot be the result of only genetic factors. We are made in a certain manner and what we do acts on our brain. In fact, our genetic basis can be modulated, modified, and changed by our experiences such as education and life events; daily, by sleep schedules and habits; or also by dietary elements. And this can be seen as true even if our experiences are indirectly driven by our genetic basis. In this paper, we will review some current scientific research on how our experiences are able to modulate the structural organization of the brain and how a healthy lifestyle (regular physical activity, correct sleep hygiene, and healthy diet) appears to positively affect cognitive reserve.
Collapse
|
43
|
Role of circadian rhythm and REM sleep for memory consolidation. Neurosci Res 2017; 118:13-20. [PMID: 28434990 DOI: 10.1016/j.neures.2017.04.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 04/11/2017] [Accepted: 04/14/2017] [Indexed: 12/11/2022]
Abstract
Although sleep is strongly implicated in memory consolidation, the molecular basis for the role of sleep in memory is not known. It has been established that the consolidation of hippocampus-dependent memory depends on the activation of the Erk1,2 MAP kinase (MAPK) pathway which activates de novo CRE-mediated transcription and translation, two processes required for memory consolidation pathway. The activation of MAPK during memory formation and its nuclear translocation both depend upon cAMP signals generated by the calmodulin-stimulated adenylyl cyclases, type 1 and type 8 (AC1 and AC8). This signaling pathway undergoes a circadian oscillation in the hippocampus with maximal activation during REM sleep. This data supports the hypothesis that the persistence of long-term memory traces may depend upon the reactivation and circadian oscillation of the cAMP/MAP kinase/CRE transcriptional pathway in tagged neurons which reaches a maximum during REM sleep.
Collapse
|
44
|
Missaire M, Fraize N, Joseph MA, Hamieh AM, Parmentier R, Marighetto A, Salin PA, Malleret G. Long-term effects of interference on short-term memory performance in the rat. PLoS One 2017; 12:e0173834. [PMID: 28288205 PMCID: PMC5348021 DOI: 10.1371/journal.pone.0173834] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/27/2017] [Indexed: 11/19/2022] Open
Abstract
A distinction has always been made between long-term and short-term memory (also now called working memory, WM). The obvious difference between these two kinds of memory concerns the duration of information storage: information is supposedly transiently stored in WM while it is considered durably consolidated into long-term memory. It is well acknowledged that the content of WM is erased and reset after a short time, to prevent irrelevant information from proactively interfering with newly stored information. In the present study, we used typical WM radial maze tasks to question the brief lifespan of spatial WM content in rodents. Groups of rats were submitted to one of two different WM tasks in a radial maze: a WM task involving the repetitive presentation of a same pair of arms expected to induce a high level of proactive interference (PI) (HIWM task), or a task using a different pair in each trial expected to induce a low level of PI (LIWM task). Performance was effectively lower in the HIWM group than in LIWM in the final trial of each training session, indicative of a "within-session/short-term" PI effect. However, we also observed a different "between-session/long-term" PI effect between the two groups: while performance of LIWM trained rats remained stable over days, the performance of HIWM rats dropped after 10 days of training, and this impairment was visible from the very first trial of the day, hence not attributable to within-session PI. We also showed that a 24 hour-gap across training sessions known to allow consolidation processes to unfold, was a necessary and sufficient condition for the long-term PI effect to occur. These findings suggest that in the HIWM task, WM content was not entirely reset between training sessions and that, in specific conditions, WM content can outlast its purpose by being stored more permanently, generating a long-term deleterious effect of PI. The alternative explanation is that WM content could be transferred and stored more permanently in an intermediary form or memory between WM and long-term memory.
Collapse
Affiliation(s)
- Mégane Missaire
- Forgetting and Cortical Dynamics Team, Lyon Neuroscience Research Center (CRNL), University Lyon 1, Lyon, France
| | - Nicolas Fraize
- Forgetting and Cortical Dynamics Team, Lyon Neuroscience Research Center (CRNL), University Lyon 1, Lyon, France
| | - Mickaël Antoine Joseph
- Forgetting and Cortical Dynamics Team, Lyon Neuroscience Research Center (CRNL), University Lyon 1, Lyon, France
| | - Al Mahdy Hamieh
- Forgetting and Cortical Dynamics Team, Lyon Neuroscience Research Center (CRNL), University Lyon 1, Lyon, France
| | - Régis Parmentier
- Forgetting and Cortical Dynamics Team, Lyon Neuroscience Research Center (CRNL), University Lyon 1, Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Lyon, France
| | - Aline Marighetto
- Neurocentre Magendie, INSERM U1215, Université de Bordeaux, Bordeaux, France
| | - Paul Antoine Salin
- Forgetting and Cortical Dynamics Team, Lyon Neuroscience Research Center (CRNL), University Lyon 1, Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Lyon, France
| | - Gaël Malleret
- Forgetting and Cortical Dynamics Team, Lyon Neuroscience Research Center (CRNL), University Lyon 1, Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Lyon, France
| |
Collapse
|
45
|
Giganti F, Aisa B, Arzilli C, Viggiano MP, Cerasuolo M, Conte F, Ficca G. Priming recognition in good sleepers and in insomniacs. J Sleep Res 2017; 26:345-352. [PMID: 28251718 DOI: 10.1111/jsr.12511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 01/16/2017] [Indexed: 11/27/2022]
Abstract
Insomniacs often report memory and concentration problems, but these complaints have not been consistently supported by performance measurements. Furthermore, while the majority of studies have addressed explicit memory, few have investigated the implicit domain, and very little is known concerning other types of implicit memory besides procedural memory, such as priming. Thus, the purpose of the study was to investigate priming effect for visual stimuli in insomniacs and good sleepers. Twenty-three insomniacs and 20 good sleepers performed a visual priming task in which they were asked to name new and old pictures presented at nine ascending levels of spatial filtering. Both neutral and sleep-related stimuli were used, as previous research evidenced an attentional bias for sleep-related stimuli. Visual priming effect was observed in both groups, suggesting that poor sleep quality does not affect this type of implicit memory. However, the identification process in insomniacs is influenced by the nature of the stimulus to identify: insomniacs recognized both new and old sleep-related stimuli at lower spatial frequencies compared with good sleepers. The tendency to selectively attend to sleep-related stimuli may influence top-down processes occurring during identification of filtering stimuli, by determining a pre-allocation of attentional resources and facilitating identification processes even when sensorial information is scant. Differences in the identification processes of sleep-related stimuli compared with neutral ones should be carefully taken into account as possible pre-clinical markers of insomnia in poor sleepers.
Collapse
Affiliation(s)
- Fiorenza Giganti
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Beatrice Aisa
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Cinzia Arzilli
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Maria Pia Viggiano
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | | | - Francesca Conte
- Department of Psychology, University of Naples II, Caserta, Italy
| | - Gianluca Ficca
- Department of Psychology, University of Naples II, Caserta, Italy
| |
Collapse
|
46
|
Dayan J, Rauchs G, Guillery-Girard B. Rhythms dysregulation: A new perspective for understanding PTSD? ACTA ACUST UNITED AC 2017; 110:453-460. [PMID: 28161453 DOI: 10.1016/j.jphysparis.2017.01.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 01/30/2017] [Indexed: 12/15/2022]
Abstract
Post-traumatic stress disorder (PTSD) is a complex syndrome that may occur after exposure to one or more traumatic events. It associates physiological, emotional, and cognitive changes Brain and hormonal modifications contribute to some impairments in learning, memory, and emotion regulation. Some of these biological dysfunctions may be analyzed in terms of rhythms dysregulation that would be expressed through endocrine rhythmicity, sleep organization, and temporal synchrony in brain activity. In the first part of this article, we report studies on endocrine rhythmicity revealing that some rhythms abnormalities are frequently observed, although not constantly, for both cortisol and sympathetic nervous system (SNS) activity. The most typical changes are a flattening of the diurnal secretion of cortisol and the hyperactivation of the SNS. These results may explain why cognitive functioning, in particular consolidation of emotional memories, attention, learning, vigilance and arousal, is altered in patients with PTSD. The second part of this article focuses on sleep disturbances, one of the core features of PTSD. Abnormal REM sleep reported in various studies may have a pathophysiological role in PTSD and may exacerbate some symptoms such as emotional regulation and memory. In addition, sleep disorders, such as paradoxical insomnia, increase the risk of developing PTSD. We also discuss the potential impact of sleep disturbances on cognition. Finally, temporal synchrony of brain activity and functional connectivity, explored using electroencephalography and functional magnetic resonance imaging, are addressed. Several studies reported abnormalities in alpha, beta and gamma frequency bands that may affect both attentional and memory processes. Other studies confirmed abnormalities in connectivity and recent fMRI data suggest that this could limit top-down control and may be associated with flashback intrusive memories. These data illustrate that a better knowledge of the different patterns of biological rhythms contributes to explain the heterogeneity of PTSD and shed new light on the association with some frequent medical disorders.
Collapse
Affiliation(s)
- Jacques Dayan
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France; CHGR Rennes-I, Pôle Universitaire de Psychiatrie de l'Enfant et de l'Adolescent, Rennes, France.
| | - Géraldine Rauchs
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France
| | - Bérengère Guillery-Girard
- Normandie Univ, UNICAEN, PSL Research University, EPHE, INSERM, U1077, CHU de Caen, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000 Caen, France
| |
Collapse
|
47
|
Alzoubi KH, Malkawi BS, Khabour OF, El-Elimat T, Alali FQ. Arbutus andrachne L. Reverses Sleep Deprivation-Induced Memory Impairments in Rats. Mol Neurobiol 2017; 55:1150-1156. [PMID: 28101814 DOI: 10.1007/s12035-017-0387-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/04/2017] [Indexed: 01/06/2023]
Abstract
Sleep deprivation (SD) is associated with cognitive deficits. It was found to affect the hippocampus region of the brain by impairing memory formation. This impairment is suggested to be caused by elevation in oxidative stress in the body, including the brain during SD. It was hypothesized that the methanolic extract of the fruits of Arbutus andrachne L. (Ericaceae) will prevent chronic SD-induced impairment of hippocampal memory via its antioxidative properties. The methanolic extract of the fruits of A. andrachne was evaluated for its beneficial properties to reverse SD-induced cognitive impairment in rats. Animals were sleep deprived for 8 weeks using a multiple platform model. The extract was administered i.p. at three doses (50, 200, and 500 mg/kg). Behavioral studies were conducted to test the spatial learning and memory using radial arm water maze (RAWM). In addition, the hippocampus was dissected to analyze the following oxidative stress markers: glutathione (GSH), oxidized glutathione (GSSG), GSH/GSSG, glutathione peroxidase (GPx), and catalase. Chronic SD impaired short- and long-term memories (P < 0.05). Treatment of animals with A. andrachne fruit extract at all doses prevented long-term memory impairment induced by SD while such treatment prevented short-term memory impairment only at 200 and 500 mg/kg dose levels. Moreover, A. andrachne fruit extract normalized the reduction in the hippocampus GSH/GSSG ratio and activity of GPx, and catalase (P < 0.05) induced by chronic sleep deprivation. Chronic sleep deprivation impaired both short- and long-term memory formation, while methanolic extract of A. andrachne fruits reversed this impairment, probably through normalizing oxidative stress in the hippocampus.
Collapse
Affiliation(s)
- Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Bayan S Malkawi
- Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Omar F Khabour
- Department of Medical Laboratory Sciences, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Tamam El-Elimat
- Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, 22110, Jordan
| | - Feras Q Alali
- College of Pharmacy, Qatar University, Doha, 2713, Qatar.
| |
Collapse
|
48
|
Coronas-Samano G, Baker KL, Tan WJT, Ivanova AV, Verhagen JV. Fus1 KO Mouse As a Model of Oxidative Stress-Mediated Sporadic Alzheimer's Disease: Circadian Disruption and Long-Term Spatial and Olfactory Memory Impairments. Front Aging Neurosci 2016; 8:268. [PMID: 27895577 PMCID: PMC5108791 DOI: 10.3389/fnagi.2016.00268] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 10/24/2016] [Indexed: 12/13/2022] Open
Abstract
Insufficient advances in the development of effective therapeutic treatments of sporadic Alzheimer's Disease (sAD) to date are largely due to the lack of sAD-relevant animal models. While the vast majority of models do recapitulate AD's hallmarks of plaques and tangles by virtue of tau and/or beta amyloid overexpression, these models do not reflect the fact that in sAD (unlike familial AD) these genes are not risk factors per se and that other mechanisms like oxidative stress, metabolic dysregulation and inflammation play key roles in AD etiology. Here we characterize and propose the Fus1 KO mice that lack a mitochondrial protein Fus1/Tusc2 as a new sAD model. To establish sAD relevance, we assessed sAD related deficits in Fus1 KO and WT adult mice of 4-5 months old, the equivalent human age when the earliest cognitive and olfactory sAD symptoms arise. Fus1 KO mice showed oxidative stress (increased levels of ROS, decreased levels of PRDX1), disruption of metabolic homeostasis (decreased levels of ACC2, increased phosphorylation of AMPK), autophagy (decreased levels of LC3-II), PKC (decreased levels of RACK1) and calcium signaling (decreased levels of Calb2) in the olfactory bulb and/or hippocampus. Mice were behaviorally tested using objective and accurate video tracking (Noldus), in which Fus1 KO mice showed clear deficits in olfactory memory (decreased habituation/cross-habituation in the short and long term), olfactory guided navigation memory (inability to reduce their latency to find the hidden cookie), spatial memory (learning impairments on finding the platform in the Morris water maze) and showed more sleep time during the diurnal cycle. Fus1 KO mice did not show clear deficits in olfactory perception (cross-habituation), association memory (passive avoidance) or in species-typical behavior (nest building) and no increased anxiety (open field, light-dark box) or depression/anhedonia (sucrose preference) at this relatively young age. These neurobehavioral deficits of the Fus1 KO mice at this relatively young age are highly relevant to sAD, making them suitable for effective research on pharmacological targets in the context of early intervention of sAD.
Collapse
Affiliation(s)
| | - Keeley L Baker
- The John B. Pierce LaboratoryNew Haven, CT, USA; Department of Neuroscience, Yale University School of MedicineNew Haven, CT, USA
| | - Winston J T Tan
- Department of Surgery, Yale University School of Medicine New Haven, CT, USA
| | - Alla V Ivanova
- Department of Surgery, Yale University School of Medicine New Haven, CT, USA
| | - Justus V Verhagen
- The John B. Pierce LaboratoryNew Haven, CT, USA; Department of Neuroscience, Yale University School of MedicineNew Haven, CT, USA
| |
Collapse
|
49
|
Abstract
Following its encoding, a memory undergoes consolidation. It may be possible to deepen our understanding of the mechanisms supporting consolidation by considering the complex architecture of a memory. Any behavior can be split into multiple components. For example, when learning a new skill we simultaneously learn the movement and the goal of that movement. Each of these components has a distinct representation within a memory. The “off-line” processing of each component may follow different rules, providing an explanation for the variety of performance changes supported by consolidation. By viewing a memory as a representation with multiple components, it is possible to bridge the gap between the behavioral changes, which define consolidation, and the biological mechanisms that support those changes. This is partly because different memory components can be mapped onto different neural circuits. With an increased understanding of consolidation, it may become possible to modulate these off-line processes to improve psychiatric and neurological rehabilitation.
Collapse
Affiliation(s)
- Edwin M Robertson
- Center for Non-Invasive Brain Stimulation, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA.
| | | |
Collapse
|
50
|
Frank MG, Benington JH. The Role of Sleep in Memory Consolidation and Brain Plasticity: Dream or Reality? Neuroscientist 2016; 12:477-88. [PMID: 17079514 DOI: 10.1177/1073858406293552] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The notion that a good night of sleep improves memory is widely accepted by the general public. Among sleep scientists, however, the idea has been hotly debated for decades. In this review, the authors consider current evidence for and against the hypothesis that sleep facilitates memory consolidation and promotes plastic changes in the brain. They find that despite a steady accumulation of positive findings over the past decade, the precise role of sleep in memory and brain plasticity remains elusive. This impasse may be resolved by more integrated approaches that combine behavioral and neurophysiological measurements in well-described in vivo models of synaptic plasticity.
Collapse
Affiliation(s)
- Marcos G Frank
- Department of Neuroscience, School of Medicine, University of Pennsylvania, Philadelphia 19104-6074, USA.
| | | |
Collapse
|