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Yin Y, Chen S, Song T, Zhou Q, Shao Y. Cognitive Load Moderates the Effects of Total Sleep Deprivation on Working Memory: Evidence from Event-Related Potentials. Brain Sci 2023; 13:898. [PMID: 37371376 DOI: 10.3390/brainsci13060898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Purpose: The function of working memory (WM) is impaired by total sleep deprivation (TSD) and cognitive load. However, it is unclear whether the load modulates the effect of TSD on WM. We conducted a pilot study to investigate the effects of 36 h of TSD on WM under different load levels. Materials and methods: Twenty-two male students aged 18-25 years were enrolled, who underwent two types of sleep conditions (baseline and 36 h TSD), where they performed two N-back WM tasks (one-back task and two-back task) with simultaneous electroencephalography recordings. Results: Repeated measures analysis of variance (ANOVA) indicated that, with the increasing load, the reaction time increased and the accuracy decreased. After TSD, the correct number per unit time decreased. The significant interaction effect of the P3 amplitudes between the load level and the sleep condition showed that the reduction in the amplitude of P3 in the two-back task due to TSD was more obvious than that in the one-back task. Conclusions: Our results provided evidence for the moderation of load on the impairment of TSD on WM. The degree of TSD-induced impairment for a higher load was greater than that for a lower load. The current study provides new insights into the mechanisms by which sleep deprivation affects cognitive function.
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Affiliation(s)
- Ying Yin
- Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
| | - Shufang Chen
- School of Psychology, Beijing Sport University, Beijing 100084, China
| | - Tao Song
- School of Psychology, Beijing Sport University, Beijing 100084, China
| | - Qianxiang Zhou
- Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
| | - Yongcong Shao
- Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
- School of Psychology, Beijing Sport University, Beijing 100084, China
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Peng Z, Hou Y, Xu L, Wang H, Wu S, Song T, Shao Y, Yang Y. Recovery sleep attenuates impairments in working memory following total sleep deprivation. Front Neurosci 2023; 17:1056788. [PMID: 37144096 PMCID: PMC10151529 DOI: 10.3389/fnins.2023.1056788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 03/31/2023] [Indexed: 05/06/2023] Open
Abstract
Introduction The detrimental effects of sleep deprivation (SD) on cognitive function and quality of life are well known, and sleep disturbances are a major physical and mental health issue worldwide. Working memory plays an important role in many complex cognitive processes. Therefore, it is necessary to identify strategies that can effectively counteract the negative effects of SD on working memory. Methods In the present study, we utilized event-related potentials (ERPs) to investigate the restorative effects of 8 h of recovery sleep (RS) on working memory impairments induced by total sleep deprivation for 36 h. We analyzed ERP data from 42 healthy male participants who were randomly assigned to two groups. The nocturnal sleep (NS) group completed a 2-back working memory task before and after normal sleep for 8 h. The sleep deprivation (SD) group completed a 2-back working memory task before and after 36 h of total sleep deprivation (TSD) and after 8 h of RS. Electroencephalographic data were recorded during each task. Results The N2 and P3 components-which are related to working memory-exhibited low-amplitude and slow-wave characteristics after 36 h of TSD. Additionally, we observed a significant decrease in N2 latency after 8 h of RS. RS also induced significant increases in the amplitude of the P3 component and in the behavioral indicators. Discussion Overall, 8 h of RS attenuated the decrease in working memory performance caused by 36 h of TSD. However, the effects of RS appear to be limited.
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Affiliation(s)
- Ziyi Peng
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yanhong Hou
- Department of Psychology Medical, The 8th Medical Centre of PLA General Hospital, Beijing, China
| | - Lin Xu
- School of Psychology, Beijing Sport University, Beijing, China
| | - Haiteng Wang
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China
- IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
| | - Shuqing Wu
- Center of Stress Medicine, East China Institute of Biotechnology, Peking University, Beijing, China
| | - Tao Song
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yongcong Shao
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yan Yang
- Department of Radiology, The 8th Medical Centre of PLA General Hospital, Beijing, China
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Tavakoli P, Murkar A, Porteous M, Carrier J, Robillard R. The Effects of Total Sleep Deprivation on Attention Capture Processes in Young and Older Adults: An ERP Study. Exp Aging Res 2023; 49:130-151. [PMID: 35369858 DOI: 10.1080/0361073x.2022.2057120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The present study investigated whether sleep deprivation affects attention capture in young and older adults using event-related potentials (ERPs). METHODS Eleven young adults (20-30 y) and nine older adults (60-70 y) were tested following both normal sleep (NS) and total sleep deprivation (TSD). ERPs were recorded during an auditory discrimination task consisting of standard and deviant stimuli. RESULTS Deviant stimuli elicited the MMN, P3a, and RON ERPs. TSD attenuated the differences in reaction times between standards and deviants in young adults but not older adults. The P3a was attenuated in older adults compared to young adults. Older adults had a larger RON amplitude compared to young adults following NS, but not TSD. CONCLUSIONS The reduced P3a and the absence of behavioral performance alteration in the older group suggests that older adults may utilize different neural processing strategies compared to younger adults to compensate for age-related declines in neural resources for attention capture. Sleep loss influenced age-related differences on the RON, suggesting that older adults may have reduced access to compensatory strategies following sleep loss.
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Affiliation(s)
- Paniz Tavakoli
- Language, Memory, and Brain Lab at the ARiEAL Research Centre, ARiEAL Research Centre, McMaster University, Hamilton, ON, Canada.,Sleep Research Unit, University of Ottawa Institute of Mental Health Research, Ottawa, ON, Canada
| | - Anthony Murkar
- Sleep Research Unit, University of Ottawa Institute of Mental Health Research, Ottawa, ON, Canada
| | - Meggan Porteous
- Sleep Research Unit, University of Ottawa Institute of Mental Health Research, Ottawa, ON, Canada.,School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Julie Carrier
- Department of Psychology, University of Montreal, Montreal, Qc, Canada
| | - Rebecca Robillard
- Sleep Research Unit, University of Ottawa Institute of Mental Health Research, Ottawa, ON, Canada.,School of Psychology, University of Ottawa, Ottawa, ON, Canada
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Tramonti Fantozzi MP, Banfi T, Di Galante M, Ciuti G, Faraguna U. Sleep Deprivation-Induced Changes in Baseline Brain Activity and Vigilant Attention Performance. Brain Sci 2022; 12. [PMID: 36552150 DOI: 10.3390/brainsci12121690] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/03/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022] Open
Abstract
Sleep deprivation (SD) negatively affects several aspects of cognitive performance, and one of the most widely-used tools to evaluate these effects is the Psychomotor Vigilance Test (PVT). The present study investigated the possibility of predicting changes induced by SD in vigilant attention performance by evaluating the baseline electroencephalographic (EEG) activity immediately preceding the PVT stimuli onset. All participants (n = 10) underwent EEG recordings during 10 min of PVT before and after a night of SD. For each participant, the root mean square (RMS) of the baseline EEG signal was evaluated for each 1 s time window, and the respective average value was computed. After SD, participants showed slower (and less accurate) performance in the PVT task. Moreover, a close relationship between the changes in the baseline activity with those in cognitive performance was identified at several electrodes (Fp2, F7, F8, P3, T6, O1, Oz, O2), with the highest predictive power at the occipital derivations. These results indicate that vigilant attention impairments induced by SD can be predicted by the pre-stimulus baseline activity changes.
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Federico G, Alfano V, Garramone F, Mele G, Salvatore M, Aiello M, Cavaliere C. Self-Reported Sleep Quality Across Age Modulates Resting-State Functional Connectivity in Limbic and Fronto-Temporo-Parietal Networks: An Exploratory Cross-Sectional fMRI Study. Front Aging Neurosci 2022; 14:806374. [PMID: 35197843 PMCID: PMC8859450 DOI: 10.3389/fnagi.2022.806374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/12/2022] [Indexed: 11/13/2022] Open
Abstract
Sleep problems are increasingly present in the general population at any age, and they are frequently concurrent with—or predictive of—memory disturbances, anxiety, and depression. In this exploratory cross-sectional study, 54 healthy participants recruited in Naples (Italy; 23 females; mean age = 37.1 years, range = 20–68) completed the Pittsburgh Sleep Quality Index (PSQI) and a neurocognitive assessment concerning both verbal and visuospatial working memory as well as subjective measures of anxiety and depression. Then, 3T fMRI images with structural and resting-state functional sequences were acquired. A whole-brain seed-to-seed functional connectivity (FC) analysis was conducted by contrasting good (PSQI score <5) vs. bad (PSQI score ≥5) sleepers. Results highlighted FC differences in limbic and fronto-temporo-parietal brain areas. Also, bad sleepers showed an anxious/depressive behavioural phenotype and performed worse than good sleepers at visuospatial working-memory tasks. These findings may help to reveal the effects of sleep quality on daily-life cognitive functioning and further elucidate pathophysiological mechanisms of sleep disorders.
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Massadeh AM, Alzoubi KH, Milhem AM, Rababa'h AM, Khabour OF. Evaluating the effect of selenium on spatial memory impairment induced by sleep deprivation. Physiol Behav 2022; 244:113669. [PMID: 34871651 DOI: 10.1016/j.physbeh.2021.113669] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/19/2021] [Accepted: 12/01/2021] [Indexed: 01/09/2023]
Abstract
Sleep deprivation (SD) impairs memory due to disturbing oxidative stress parameters. Selenium is a main component of several antioxidant enzymes and provides a neuroprotective effect. The present study aimed to investigate the potential neuroprotective effect of chronic selenium administration on cognitive impairments induced by chronic SD. Adult male Wister rats were randomly assigned into five groups (n = 12/group). The SD was induced in rats using modified multiple platform model. Selenium (6 µg/kg of animal's body weight) was administered to rats via oral gavage for 6 weeks. The spatial learning and memory were assessed using the radial arm water maze (RAWM). Moreover, we measured the levels of reduced glutathione (GSH), oxidized glutathione (GSSG) and GSH/GSSG, catalase, glutathione peroxidase (GPx), superoxide dismutase (SOD), thiobarbituric acid reactive substances (TBARS) and brain derived neurotrophic factor (BDNF) in the hippocampus. The results indicate that short- and long-term memory were impaired by chronic sleep deprivation (P < 0.05), while selenium administration prevented this effect. Moreover, selenium normalized antioxidants activities which were reduced by SD such as: catalase (P < 0.05), and SOD (P < 0.05), and significantly enhanced the ratio of GSH/GSSG in sleep-deprived rats (P < 0.05), without significant alteration of BDNF (P > 0.05), GSH (P > 0.05), or TBARS levels (P > 0.05). In conclusion, chronic SD induced memory impairment, and chronic treatment with selenium prevented this impairment by normalizing antioxidant enzymes activities in the hippocampus.
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Affiliation(s)
- Adnan M Massadeh
- Department of Medicinal Chemistry and Pharmacognosy , Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110 Jordan.
| | - Karem H Alzoubi
- Department of Pharmacy Practice and Pharmacotherapeutics, University of Sharjah, Sharjah, UAE; Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110 Jordan
| | - Amal M Milhem
- Department of Medicinal Chemistry and Pharmacognosy , Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110 Jordan
| | - Abeer M Rababa'h
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110 Jordan
| | - Omar F Khabour
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110 Jordan
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Shapiro D, Duquette CE, Zangerle C, Pearl A, Campbell T. The Seniority Swoop: Young Nurse Burnout, Violence, and Turnover Intention in an 11-Hospital Sample. Nurs Adm Q 2022; 46:60-71. [PMID: 34860802 DOI: 10.1097/naq.0000000000000502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We sought to understand whether nurses aged 20 to 29 years burnout and intend to turnover in higher proportions than more senior nurses, and if so, why. Guided by Maslow's hierarchy, we used brief inventories to assess hospital-based bedside nurses at 11 hospitals in Pennsylvania and Rhode Island (n = 3549/9520) prior to the pandemic. In a second study, we compared scheduling policies, bargaining, and Magnet status to see whether these variables predicted worsened burnout rates in young nurses. In a pattern that appears like a swooping line when graphed, nurses aged 20 to 29 years reported higher burnout and intention to leave than more senior nurses. They also reported being punched, bitten, spit on, kicked, or otherwise physically struck more often, worked more long shifts, worked more nights, and reported more dehydration and poorer sleep. Notably, age alone was not a strong predictor of turnover until burnout was added to the model, indicating that there is no inherent millennial trait resulting in higher turnover. Instead, preventing and addressing burnout is key to retention. When comparing hospital characteristics, only scheduling perks for senior nurses predicted the seniority swoop pattern. We offer 9 recommendations to reduce burnout and turnover in young nurses.
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Affiliation(s)
- Daniel Shapiro
- Penn State College of Medicine, Hershey, Pennsylvania (Drs Shapiro and Pearl); Nursing Affairs Lifespan Health, Providence, Rhode Island (Dr Duquette); and Allegheny Health Network, Pittsburgh, Pennsylvania (Drs Zangerle and Campbell)
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8
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Tàpia-Caballero P, Serrano-Fernández MJ, Boada-Cuerva M, Boada-Grau J, Assens-Serra J, Robert-Sentís L. Age, gender, personality, burnout, job characteristics and job content as predictors of driver fatigue. Int J Occup Saf Ergon 2021; 28:2396-2402. [PMID: 34633270 DOI: 10.1080/10803548.2021.1991672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Objectives. Several studies have shown that one of the most common causes of collision is driver fatigue since fatigue causes drowsiness while driving and this decreases the driver's ability to maneuver the vehicle and increases the probability of their nodding off and falling asleep at the wheel. This may be due to a variety of personal reasons and specific factors connected to working conditions. In the present work we therefore intend to develop a predictive model for fatigue in professional drivers using the following indicators: age, gender, personality, burnout, characteristics and job content. Method. The participants were 516 professional drivers from different transport sectors, obtained through non-probabilistic sampling. SPSS version 25.0 was used for data analysis. Results. The predictive capacity of a number of variables that affect drivers by causing fatigue is determined. Fatigue can be predicted through certain variables, with the best predictor being exhaustion (48.8%). Conclusions. This research contributes to a greater knowledge of the factors that produce fatigue in professional drivers. It highlights the importance of designing interventions to reduce the incidence of fatigue, resulting in greater well-being for the driver and a lower incidence of collisions.
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Affiliation(s)
- Patricia Tàpia-Caballero
- Faculty of Education Sciences and Psychology, Universitat Rovira i Virgili (URV), Spain.,Economics and Business, Universitat Oberta de Catalunya (UOC), Spain
| | - María-José Serrano-Fernández
- Faculty of Education Sciences and Psychology, Universitat Rovira i Virgili (URV), Spain.,Education Sciences and Psychology, Universitat Oberta de Catalunya (UOC), Spain
| | | | - Joan Boada-Grau
- Faculty of Education Sciences and Psychology, Universitat Rovira i Virgili (URV), Spain.,Economics and Business, Universitat Oberta de Catalunya (UOC), Spain
| | | | - Lluís Robert-Sentís
- Faculty of Education Sciences and Psychology, Universitat Rovira i Virgili (URV), Spain
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9
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Serrano-Fernández MJ, Boada-Grau J, Robert-Sentís L, Boada-Cuerva M, Vigil-Colet A, Assens-Serra J. Spanish Adaptation of the Groningen Sleep Quality Scale (GSQS-8). Univ Psychol 2021. [DOI: 10.11144/javeriana.upsy19.sags] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Professional drivers are a group susceptible to sleep problems or incorrect rest patterns resulting from work stress that causes alterations in biological stress markers, such as cortisol, or in cardiovascular parameters that show a state of physiological hyper-activation. The current research objective was to adapt and validate the Groningen Sleep Scale (Meijman et al., 1990) in a Spanish population. We analysed its internal structure, reliability and evidence of validity. The participants in this study were 372 drivers (93.4% men, 6.6% women), with a mean age of 40.9 (SD = 10.54), obtained through non-probabilistic sampling. The SPSS 23.0 and AMOS (5.0) programs were used. With the confirmatory factor analysis (CFA) of the AMOS program (5.0), the indicators NFI = 0.902; TLI = 0.844; CFI = 0.913; RMSEA = 0.129 were obtained and showed an acceptable adjustment of the unifactorial model with 8 items. Adequate reliability (0.90) and appropriate evidence of validity with TDS-38, MBI-GS, Irritation, MP-9, DII, and Trans-18. We can conclude that the Groningen Sleep Scale (GSQS-8) is a reliable and valid instrument, suitable in the Spanish language for evaluating the sleep quality of professional drivers.
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Hernández Santiago K, López-López AL, Sánchez-Muñoz F, Cortés Altamirano JL, Alfaro-Rodríguez A, Bonilla-Jaime H. Sleep deprivation induces oxidative stress in the liver and pancreas in young and aging rats. Heliyon 2021; 7:e06466. [PMID: 33748503 DOI: 10.1016/j.heliyon.2021.e06466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/04/2020] [Accepted: 03/05/2021] [Indexed: 11/26/2022] Open
Abstract
The aging process is characterized by a gradual impairment generally caused by oxidative stress and, more specifically, sleep deprivation, which induces oxidative stress in the brain. The objective of this study was to assess the effect of three types of paradoxical sleep deprivation (PSD): 96 h of PSD (96PSD group); 192 h of PSD (192PSD group); 192 h of PSD followed by a recovery period of 20 days (192PSD + Recovery group) on an oral glucose tolerance test (OGTT), lipid peroxidation (LPO), and superoxide dismutase (SOD) and catalase (CAT) activities in the liver and pancreas of young (3-month-old) and adult (14-month-old) rats. The 96PSD and 192PSD groups of young rats showed lower glucose levels on the OGTT than the control group. In the adult rats, only the 96PSD group had lower glucose levels than the control group. However, the areas under the curve for the young and adult 192 and 192PSD + Recovery groups showed significant differences. Both LPO and SOD increased in the 192PSD and 192PSD + Recovery groups, but CAT decreased in the liver of young rats in the 192PSD group. Regarding the pancreas, LPO and SOD levels increased after 96 h of PSD. In adult animals, CAT decreased in the liver after 96 and 192 h of PSD, while LPO and SOD increased in the pancreas of the 192PSD and PSD + Recovery groups. Differences in the SOD and CAT activities in the liver and SOD activities in the pancreas were also observed between the young and adult rats and maintained across all the PSD groups. In conclusion, PSD induced differential responses that appeared to depend on the duration of the induced condition, the animals’ age, and the tissue analyzed. It was found that adult rats were more susceptible to the effects of PSD than young rats.
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Bistricky SL, Walther C, Balderas J, Prudon J, Ward CP, Ingram RE, Atchley RA. Dysfunctional sleep insufficiency and reduced P3 attentional response to positive social information. Sleep Biol Rhythms 2021; 19:237-45. [DOI: 10.1007/s41105-021-00309-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Wu J, Zhou Q, Li J, Chen Y, Shao S, Xiao Y. Decreased resting-state alpha-band activation and functional connectivity after sleep deprivation. Sci Rep 2021; 11:484. [PMID: 33436726 PMCID: PMC7804319 DOI: 10.1038/s41598-020-79816-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/08/2020] [Indexed: 01/29/2023] Open
Abstract
Cognitive abilities are impaired by sleep deprivation and can be recovered when sufficient sleep is obtained. Changes in alpha-band oscillations are considered to be closely related to sleep deprivation. In this study, power spectrum, source localization and functional connectivity analyses were used to investigate the changes in resting-state alpha-band activity after normal sleep, sleep deprivation and recovery sleep. The results showed that the global alpha power spectrum decreased and source activation was notably reduced in the precuneus, posterior cingulate cortex, cingulate gyrus, and paracentral lobule after sleep deprivation. Functional connectivity analysis after sleep deprivation showed a weakened functional connectivity pattern in a widespread network with the precuneus and posterior cingulate cortex as the key nodes. Furthermore, the changes caused by sleep deprivation were reversed to a certain extent but not significantly after one night of sleep recovery, which may be due to inadequate time for recovery sleep. In conclusion, large-scale resting-state alpha-band activation and functional connectivity were weakened after sleep deprivation, and the inhibition of default mode network function with the precuneus and posterior cingulate cortex as the pivotal nodes may be an important cause of cognitive impairment. These findings provide new insight into the physiological response to sleep deprivation and determine how sleep deprivation disrupts brain alpha-band oscillations.
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Affiliation(s)
- Jintao Wu
- grid.64939.310000 0000 9999 1211School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191 China ,grid.418516.f0000 0004 1791 7464National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing, 100094 China ,grid.64939.310000 0000 9999 1211Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100191 China
| | - Qianxiang Zhou
- grid.64939.310000 0000 9999 1211School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191 China
| | - Jiaxuan Li
- grid.64939.310000 0000 9999 1211School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191 China
| | - Yang Chen
- grid.64939.310000 0000 9999 1211School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191 China
| | - Shuyu Shao
- grid.443259.d0000 0004 0632 4890School of Logistics, Beijing Wuzi University, Beijing, 101149 China
| | - Yi Xiao
- grid.418516.f0000 0004 1791 7464National Key Laboratory of Human Factors Engineering, China Astronaut Research and Training Center, Beijing, 100094 China
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13
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Peng Z, Dai C, Cai X, Zeng L, Li J, Xie S, Wang H, Yang T, Shao Y, Wang Y. Total Sleep Deprivation Impairs Lateralization of Spatial Working Memory in Young Men. Front Neurosci 2020; 14:562035. [PMID: 33122988 PMCID: PMC7573126 DOI: 10.3389/fnins.2020.562035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/10/2020] [Indexed: 11/23/2022] Open
Abstract
Total sleep deprivation (TSD) negatively affects cognitive function. Previous research has focused on individual variation in cognitive function following TSD, but we know less about how TSD influences the lateralization of spatial working memory. This study used event-related-potential techniques to explore asymmetry in spatial-working-memory impairment. Fourteen healthy male participants performed a two-back task with electroencephalogram (EEG) recordings conducted at baseline and after 36 h of TSD. We selected 12 EEG points corresponding to left and right sides of the brain and then observed changes in N2 and P3 components related to spatial working memory. Before TSD, P3 amplitude differed significantly between the left and right sides of the brain. This difference disappeared after TSD. Compared with baseline, P3 amplitude decreased for a duration as extended as the prolonged latency of N2 components. After 36 h of TSD, P3 amplitude decreased more in the right hemisphere than the left. We therefore conclude that TSD negatively affected spatial working memory, possibly through removing the right hemisphere advantage.
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Affiliation(s)
- Ziyi Peng
- School of Psychology, Beijing Sport University, Beijing, China
| | - Cimin Dai
- School of Psychology, Beijing Sport University, Beijing, China
| | - Xiaoping Cai
- Department of Cadra Word 3 Division, PLA Army General Hospital, Beijing, China
| | - Lingjing Zeng
- School of Psychology, Beijing Sport University, Beijing, China
| | - Jialu Li
- School of Psychology, Beijing Sport University, Beijing, China
| | - Songyue Xie
- School of Psychology, Beijing Sport University, Beijing, China
| | - Haiteng Wang
- School of Psychology, Beijing Sport University, Beijing, China
| | - Tianyi Yang
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yongcong Shao
- School of Psychology, Beijing Sport University, Beijing, China.,Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Yi Wang
- China Institute of Sports and Health Science, Beijing Sport University, Beijing, China.,State Key Lab of Space Medicine Fundamentals and Application, China Astronaut Research and Training Centre, Beijing, China
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Rugama AD, Desautels A, Montplaisir J, Carrier J, Thompson C, Blais H, Lina J, Gosselin N. Electroencephalographic Markers of Idiopathic Hypersomnia: Where We are and Where We are Going. Curr Sleep Medicine Rep 2020; 6:101-10. [DOI: 10.1007/s40675-020-00173-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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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] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 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.
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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
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16
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Ahlström C, Solis-Marcos I, Nilsson E, Åkerstedt T. The impact of driver sleepiness on fixation-related brain potentials. J Sleep Res 2019; 29:e12962. [PMID: 31828862 DOI: 10.1111/jsr.12962] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 11/14/2019] [Accepted: 11/18/2019] [Indexed: 11/30/2022]
Abstract
The effects of driver sleepiness are often quantified as deteriorated driving performance, increased blink durations and high levels of subjective sleepiness. Driver sleepiness has also been associated with increasing levels of electroencephalogram (EEG) power, especially in the alpha range. The present exploratory study investigated a new measure of driver sleepiness, the EEG fixation-related lambda response. Thirty young male drivers (23.6 ± 1.7 years old) participated in a driving simulator experiment in which they drove on rural and suburban roads in simulated daylight versus darkness during both the daytime (full sleep) and night-time (sleep deprived). The results show lower lambda responses during night driving and with longer time on task, indicating that sleep deprivation and time on task cause a general decrement in cortical responsiveness to incoming visual stimuli. Levels of subjective sleepiness and line crossings were higher under the same conditions. Furthermore, results of a linear mixed-effects model showed that low lambda responses are associated with high subjective sleepiness and more line crossings. We suggest that the fixation-related lambda response can be used to investigate driving impairment induced by sleep deprivation while driving and that, after further refinement, it may be useful as an objective measure of driver sleepiness.
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Affiliation(s)
- Christer Ahlström
- Swedish National Road and Transport Research Institute (VTI), Linköping, Sweden.,Department of Biomedical Engineering, Linköping University, Linköping, Sweden
| | | | - Emma Nilsson
- Volvo Cars Safety Centre, Volvo Car Corporation, Göteborg, Sweden.,Department of Mechanics and Maritime Sciences, Chalmers University of Technology, Göteborg, Sweden
| | - Torbjörn Åkerstedt
- Stress Research Institute, Stockholm University, Stockholm, Sweden.,Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
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17
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Zhang L, Shao Y, Liu Z, Li C, Chen Y, Zhou Q. Decreased Information Replacement of Working Memory After Sleep Deprivation: Evidence From an Event-Related Potential Study. Front Neurosci 2019; 13:408. [PMID: 31105518 PMCID: PMC6499035 DOI: 10.3389/fnins.2019.00408] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/10/2019] [Indexed: 12/25/2022] Open
Abstract
Working memory (WM) components are altered after total sleep deprivation (TSD), both with respect to information replacement and result judgment. However, the electrophysiological mechanisms of WM alterations following sleep restriction remain largely unknown. To identify such mechanisms, event-related potentials were recorded during the n-back WM task, before and after 36 h sleep deprivation. Thirty-one young volunteers participated in this study and performed a two-back WM task with simultaneous electroencephalography (EEG) recording before and after TSD and after 8 h time in bed for recovery (TIBR). Repeated measures analysis of variance revealed that, compared to resting wakefulness, sleep deprivation induced a decrease in the P200 amplitude and induced longer reaction times. ERP-component scalp topographies results indicated that such decrease primarily occurred in the frontal cortex. The N200 and P300 amplitudes also decreased after TSD. Our results suggest that decreased information replacement of WM occurs after 36 h of TSD and that 8 h TIBR after a long period of TSD leads to partial restoration of WM functions. The present findings represent the EEG profile of WM during mental fatigue.
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Affiliation(s)
- Liwei Zhang
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, China
| | - Yongcong Shao
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Cognitive and Mental Health Research Center, Beijing Institute of Basic Medical Science, Beijing, China
| | - Zhongqi Liu
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, China
| | - Chenming Li
- The Quartermaster Research Institute of Engineering and Technology, Beijing, China
| | - Yuhong Chen
- The Quartermaster Research Institute of Engineering and Technology, Beijing, China
| | - Qianxiang Zhou
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, China
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18
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Gosselin A, De Koninck J, Campbell KB. Disentangling specific inhibitory versus general decision-making processes during sleep deprivation using a Go/NoGo ERP paradigm. Int J Psychophysiol 2019; 141:18-27. [PMID: 31022412 DOI: 10.1016/j.ijpsycho.2019.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 03/25/2019] [Accepted: 04/22/2019] [Indexed: 11/25/2022]
Abstract
This study used a Go/NoGo ERP paradigm in which Go and NoGo stimuli occurred rarely and equally often in an attempt to determine if sleep deprivation has a general effect on decision-making or a more specific effect on inhibition. A Go/NoGo task was administered six times to eleven participants during 36 h of sleep deprivation and once again post recovery sleep. In the Go condition, the participant was asked to respond to the rare stimulus. In the separate NoGo condition, the participant was asked to withhold the response to the rare stimulus. ERPs were recorded to the rare stimuli. The NoGo P3 should be attenuated if sleep loss mainly affects inhibitory processes. Both Go and NoGo P3 should be attenuated if sleep loss affects general detection processes. During sleep loss, accuracy decreased for both tasks. RT also gradually increased for the Go task. Performance during the NoGo task was more complex and was better accounted by a speed-accuracy trade-off. Overall, findings indicate that sleep deprivation did not have specific effects on inhibition. However, the amplitude of the Go P3 occurred as early as 12 h after waking and might reflect an effect of task repetition rather than true sleep deprivation. In contrast, the NoGo P3 amplitude was not significantly reduced until after 24 and 36 h of wakefulness, suggesting a true sleep deprivation effect. Both Go and NoGo P3 post recovery sleep did not return to baseline levels, possibly due to residual sleep inertia.
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Affiliation(s)
- Anik Gosselin
- School of Psychology, University of Ottawa, Canada; St. Lawrence Valley Correctional and Treatment Centre, The Royal Ottawa Mental Health Centre, Ottawa, Canada; University of Ottawa Institute of Mental Health Research, Canada.
| | - Joseph De Koninck
- School of Psychology, University of Ottawa, Canada; University of Ottawa Institute of Mental Health Research, Canada
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19
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Muller-Gass A, Campbell K. Sleep deprivation moderates neural processes associated with passive auditory capture. Brain Cogn 2019; 132:89-97. [PMID: 30939357 DOI: 10.1016/j.bandc.2019.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 02/22/2019] [Accepted: 03/19/2019] [Indexed: 10/27/2022]
Abstract
Sleep loss has a major effect on cognitive tasks that are dependent on the maintenance of active sustained attention. This study examines the effects of sleep deprivation on automatic information processing, more specifically, its effect on processes leading to involuntary auditory attention capture by task-irrelevant auditory events. Two experiments were run. In the first, 13 participants were totally sleep-deprived (TSD); in the second, 16 participants were partially sleep-deprived (PSD), sleeping only four hours. Event-related potentials were recorded while participants discriminated the duration of equiprobable short and long auditory tones. At rare times, a small change to the pitch of these stimuli occurred. This deviant was however irrelevant to the duration detection task. As expected, TSD had a significant effect on the attention-dependent duration detection task; performance was worse and the P3b, associated with ease of detection, was attenuated. PSD had a similar, but reduced effect. Critically, the small pitch deviant resulted in less behavioural distraction following TSD compared to normal sleep.Consistent with this, the P3a, associated with the attention capture process, was significantly reduced following both TSD and PSD. Processes related to the passive switching of attention to potentially critical, but unattended, stimulus events are moderated by sleep deprivation.
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Affiliation(s)
- Alexandra Muller-Gass
- Defence Research and Development Canada, Toronto Research Centre, Canada; Canadian Forces Health Services, Directorate of Mental Health, Ottawa, Canada; School of Psychology, University of Ottawa, Ottawa, Canada.
| | - Kenneth Campbell
- School of Psychology, University of Ottawa, Ottawa, Canada; Brain and Mind Institute, University of Ottawa, Ottawa, Canada
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20
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Pizzimenti NM, Savino AK, McCarthy MT. Sleep correlates of brain network activation and clinical measures in youth American football players. Transl Sports Med 2019. [DOI: 10.1002/tsm2.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Chattu VK, Sakhamuri SM, Kumar R, Spence DW, BaHammam AS, Pandi-Perumal SR. Insufficient Sleep Syndrome: Is it time to classify it as a major noncommunicable disease? Sleep Sci 2018; 11:56-64. [PMID: 30083291 PMCID: PMC6056073 DOI: 10.5935/1984-0063.20180013] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 03/07/2018] [Indexed: 12/16/2022] Open
Abstract
Over the last three to four decades, it has been observed that the average total number of hours of sleep obtained per night by normal individuals have decreased. Concomitantly, global figures indicate that insufficient sleep is associated with serious adverse health and social outcomes. Moreover, insufficient sleep has been linked to seven of the fifteen leading causes of death. Additionally, current evidence suggests that sleep plays a significant role in determining cognitive performance and workplace productivity. There is a great need for a systematic analysis of the economic impact of insufficient sleep, particularly given current evidence that this phenomenon, as well as the poor sleep hygiene practices which produce it, is increasing worldwide. This paper takes the view that health authorities around the world need to raise the general awareness of benefits of sleep. There is considerable scope for research into both the public health impact as well as the macroeconomic consequences of insufficient sleep syndrome (ISS). Additionally, various models which estimate the undiagnosed burden of ISS on the GDP (gross domestic product) are needed to prioritize health issues and to highlight the national policies that are necessary to combat this medical problem. Sleep insufficiency has been declared to be a 'public health epidemic'; therefore, we propose ISS as a potential noncommunicable disease. This review elaborates on this topic further, exploring the causes and consequences of insufficient sleep, and thus providing a perspective on the policies that are needed as well as the research that will be required to support and justify these policies.
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Affiliation(s)
- Vijay Kumar Chattu
- Faculty of Medical Sciences, The University of the West Indies, St.
Augustine, Trinidad & Tobago
| | - Sateesh M. Sakhamuri
- Faculty of Medical Sciences, The University of the West Indies, St.
Augustine, Trinidad & Tobago
| | - Raman Kumar
- President, Academy of Family Physicians of India, New Delhi,
India
| | | | - Ahmed S. BaHammam
- University Sleep Disorders Center, College of Medicine and National
Plan for Science and Technology, King Saud University, Riyadh, Saudi Arabia
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22
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Ahmad S, Bashir S. A pilot study investigating the association between sleep and cognitive function among adolescents. Asian J Psychiatr 2017; 28:34-37. [PMID: 28784392 DOI: 10.1016/j.ajp.2017.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 03/14/2017] [Accepted: 03/15/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVES To investigate the relationship between sleep and cognitive function among adolescent subjects in Riyadh. METHODS The sample consisted of 98 (44% female) subjects aged 10-16 years. Each participant filled in a well-structured pre-coded questionnaire regarding demographic data, including a sleep questionnaire; cognitive function was assessed using the Cambridge Neuropsychological Automated Battery (CANTAB). The cognitive function outcome variables were response times in the attention-switching task (AST) and the percentage of correct answers in the pattern recognition memory (PRM) task. RESULTS There were significant differences in measures of AST-latency (p=0.005), AST-congruent (p=0.012), and AST-incongruent (p=0.009), while no significant difference was found in the PRM task score (p=0.336) within gender groups. There was a significant correlation between sleep and AST switching cost (0.277, p=0.006) and sleep and AST latency (0.188, p=0.063) across the group. CONCLUSION This study showed that gender differences in cognitive function were significant in the group of adolescents. Additionally, this study shows that insufficient sleep can impair attention and accuracy in adolescents.
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Affiliation(s)
- Shafiq Ahmad
- Industrial Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Shahid Bashir
- Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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23
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Lowe CJ, Safati A, Hall PA. The neurocognitive consequences of sleep restriction: A meta-analytic review. Neurosci Biobehav Rev 2017; 80:586-604. [PMID: 28757454 DOI: 10.1016/j.neubiorev.2017.07.010] [Citation(s) in RCA: 225] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/26/2017] [Accepted: 07/24/2017] [Indexed: 01/17/2023]
Abstract
The current meta-analytic review evaluated the effects of experimentally manipulated sleep restriction on neurocognitive functioning. Random-effects models were employed to estimate the overall effect size and the differential effect size across cognitive domains. Age, time of day, age-adjusted sleep deficit, cumulative days of restricted sleep, sleep latency, subjective sleepiness, and biological sex were examined as potential moderators of the effect. Based on a sample of 61 studies, from 71 different populations, findings revealed a significant negative effect of sleep restriction on cognitive processing across cognitive domains (g=-0.383, p<0.001). This effect held for executive functioning (g=-0.324, p<0.001), sustained attention (g=-0.409, p<0.001), and long-term memory (g=-0.192, p=0.002). There was insufficient evidence to detect an effect within the domains of attention, multitask, impulsive decision-making or intelligence. Age group, time of day, cumulative days of restricted sleep, sleep latency, subjective sleepiness, and biological sex were all significant moderators of the overall effect. In conclusion, the current meta-analysis is the first comprehensive review to provide evidence that short-term sleep restriction significantly impairs waking neurocognitive functioning.
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Affiliation(s)
- Cassandra J Lowe
- School of Public Health and Health Systems, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
| | - Adrian Safati
- School of Public Health and Health Systems, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Peter A Hall
- School of Public Health and Health Systems, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
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24
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Alzoubi KH, Rababa'h AM, Owaisi A, Khabour OF. L-carnitine prevents memory impairment induced by chronic REM-sleep deprivation. Brain Res Bull 2017; 131:176-182. [PMID: 28433816 DOI: 10.1016/j.brainresbull.2017.04.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 04/10/2017] [Accepted: 04/11/2017] [Indexed: 12/29/2022]
Abstract
Sleep deprivation (SD) negatively impacts memory, which was related to oxidative stress induced damage. L-carnitine is a naturally occurring compound, synthesized endogenously in mammalian species and known to possess antioxidant properties. In this study, the effect of L-carnitine on learning and memory impairment induced by rapid eye movement sleep (REM-sleep) deprivation was investigated. REM-sleep deprivation was induced using modified multiple platform model (8h/day, for 6 weeks). Simultaneously, L-carnitine was administered (300mg/kg/day) intraperitoneally for 6 weeks. Thereafter, the radial arm water maze (RAWM) was used to assess spatial learning and memory. Additionally, the hippocampus levels of antioxidant biomarkers/enzymes: reduced glutathione (GSH), oxidized glutathione (GSSG), GSH/GSSG ratio, glutathione peroxidase (GPx), catalase, and superoxide dismutase (SOD) and thiobarbituric acid reactive substance (TBARS) were assessed. The results showed that chronic REM-sleep deprivation impaired both short- and long-term memory (P<0.05), whereas L-carnitine treatment protected against this effect. Furthermore, L-carnitine normalized chronic REM-sleep deprivation induced reduction in the hippocampus ratio of GSH/GSSG, activity of catalase, GPx, and SOD. No change was observed in TBARS among tested groups (P>0.05). In conclusion, chronic REM-sleep deprivation induced memory impairment, and treatment with L-carnitine prevented this impairment through normalizing antioxidant mechanisms in the hippocampus.
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Affiliation(s)
- Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan.
| | - Abeer M Rababa'h
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Amani Owaisi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Omar F Khabour
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan; Faculty of Applied Medical Sciences , Taibah University , Medina , Saudi Arabia
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25
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26
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Techera U, Hallowell M, Stambaugh N, Littlejohn R. Causes and Consequences of Occupational Fatigue: Meta-Analysis and Systems Model. J Occup Environ Med 2016; 58:961-73. [DOI: 10.1097/jom.0000000000000837] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Choudhary AK, Kishanrao SS, Dadarao Dhanvijay AK, Alam T. Sleep restriction may lead to disruption in physiological attention and reaction time. Sleep Sci 2016; 9:207-211. [PMID: 28123662 PMCID: PMC5241616 DOI: 10.1016/j.slsci.2016.09.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 07/12/2016] [Accepted: 09/08/2016] [Indexed: 11/16/2022] Open
Abstract
Sleepiness is the condition where for some reason fails to go into a sleep state and will have difficulty in remaining awake even while carrying out activities. Sleep restriction occurs when an individual fails to get enough sleep due to high work demands. The mechanism between sleep restriction and underlying brain physiology deficits is not well assumed. The objective of the present study was to investigate the mental attention (P300) and reaction time [visual (VRT) and auditory (ART)] among night watchmen, at subsequent; first (1st) day, fourth (4th) day and seventh (7th) day of restricted sleep period. After exclusion and inclusion criteria, the study was performed among 50 watchmen (age=18-35 years) (n=50) after providing written informed consent and divided into two group. Group I-(Normal sleep) (n=28) working in day time and used to have normal sleep in night (≥8 h); Group II-(Restricted sleep) (n=22) - working in night time and used to have less sleep in night (≤3 h). Statistical significance between the different groups was determined by the independent student 't' test and the significance level was fixed at p≤0.05. We observed that among all normal and restricted sleep watchmen there was not any significant variation in Karolinska Sleepiness Scale (KSS) score, VRT and ART, along with latency and amplitude of P300 on 1st day of restricted sleep. However at subsequent on 4th day and 7th day of restricted sleep, there was significant increase in (KSS)score, and prolongation of VRT and ART as well as alteration in latency and amplitude of P300 wave in restricted sleep watchmen when compare to normal sleep watchmen. The present finding concludes that loss of sleep has major impact in dynamic change in mental attention and reaction time among watchmen employed in night shift. Professional regulations and work schedules should integrate sleep schedules before and during the work period as an essential dimension for their healthy life.
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Affiliation(s)
- Arbind Kumar Choudhary
- Department of Physiology, People's College of Medical Sciences and Research Centre, Bhopal, India
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28
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Barkaszi I, Takács E, Czigler I, Balázs L. Extreme Environment Effects on Cognitive Functions: A Longitudinal Study in High Altitude in Antarctica. Front Hum Neurosci 2016; 10:331. [PMID: 27445768 PMCID: PMC4928492 DOI: 10.3389/fnhum.2016.00331] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 06/16/2016] [Indexed: 11/16/2022] Open
Abstract
This paper focuses on the impact of long-term Antarctic conditions on cognitive processes. Behavioral responses and event-related potentials were recorded during an auditory distraction task and an attention network paradigm. Participants were members of the over-wintering crew at Concordia Antarctic Research Station. Due to the reduced partial pressure of oxygen this environment caused moderate hypoxia. Beyond the hypoxia, the fluctuation of sunshine duration, isolation and confinement were the main stress factors of this environment. We compared 6 measurement periods completed during the campaign. Behavioral responses and N1/MMN (mismatch negativity), N1, N2, P3, RON (reorientation negativity) event-related potential components have been analyzed. Reaction time decreased in both tasks in response to repeated testing during the course of mission. The alerting effect increased, the inhibition effect decreased and the orienting effect did not change in the ANT task. Contrary to our expectations the N2, P3, RON components related to the attentional functions did not show any significant changes. Changes attributable to early stages of information processing were observed in the ANT task (N1 component) but not in the distraction task (N1/MMN). The reaction time decrements and the N1 amplitude reduction in ANT task could be attributed to sustained effect of practice. We conclude that the Antarctic conditions had no negative impacts on cognitive activity despite the presence of numerous stressors.
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Affiliation(s)
- Irén Barkaszi
- Environmental Adaptation and Space Research Group, Institute of Cognitive Neuroscience and Psychology, Research Centre for Natural Sciences, Hungarian Academy of SciencesBudapest, Hungary
- Department of Experimental Psychology, Institute of Psychology, Debrecen UniversityDebrecen, Hungary
| | - Endre Takács
- Environmental Adaptation and Space Research Group, Institute of Cognitive Neuroscience and Psychology, Research Centre for Natural Sciences, Hungarian Academy of SciencesBudapest, Hungary
- Faculty of Education and Psychology, Eötvös Loránd UniversityBudapest, Hungary
| | - István Czigler
- Environmental Adaptation and Space Research Group, Institute of Cognitive Neuroscience and Psychology, Research Centre for Natural Sciences, Hungarian Academy of SciencesBudapest, Hungary
- Faculty of Education and Psychology, Eötvös Loránd UniversityBudapest, Hungary
| | - László Balázs
- Environmental Adaptation and Space Research Group, Institute of Cognitive Neuroscience and Psychology, Research Centre for Natural Sciences, Hungarian Academy of SciencesBudapest, Hungary
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29
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Shibasaki M, Namba M, Oshiro M, Crandall CG, Nakata H. The effect of elevations in internal temperature on event-related potentials during a simple cognitive task in humans. Am J Physiol Regul Integr Comp Physiol 2016; 311:R33-8. [PMID: 27101295 DOI: 10.1152/ajpregu.00086.2016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 04/12/2016] [Indexed: 01/08/2023]
Abstract
The effect of hyperthermia on cognitive function remains equivocal, perhaps because of methodological discrepancy. Using electroencephalographic event-related potentials (ERPs), we tested the hypothesis that a passive heat stress impairs cognitive processing. Thirteen volunteers performed repeated auditory oddball paradigms under two thermal conditions, normothermic time control and heat stress, on different days. For the heat stress trial, these paradigms were performed at preheat stress (i.e., normothermic) baseline, when esophageal temperature had increased by ∼0.8°C, when esophageal temperature had increased by ∼2.0°C, and during cooling following the heat stress. The reaction time and ERPs were recorded in each session. For the time control trial, subjects performed the auditory oddball paradigms at approximately the same time interval as they did in the heat stress trial. The peak latency and amplitude of an indicator of auditory processing (N100) were not altered regardless of thermal conditions. An indicator of stimulus classification/evaluation time (latency of P300) and the reaction time were shortened during heat stress; moreover an indicator of cognitive processing (the amplitude of P300) was significantly reduced during severe heat stress (8.3 ± 1.3 μV) relative to the baseline (12.2 ± 1.0 μV, P < 0.01). No changes in these indexes occurred during the time control trial. During subsequent whole body cooling, the amplitude of P300 remained reduced, and the reaction time and latency of P300 remained shortened. These results suggest that excessive elevations in internal temperature reduce cognitive processing but promote classification time.
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Affiliation(s)
- Manabu Shibasaki
- Department of Health Sciences, Faculty of Human Life and Environment, Nara Women's University, Nara, Japan;
| | - Mari Namba
- Graduate School of Humanities and Sciences, Nara Women's University, Nara, Japan; and
| | - Misaki Oshiro
- Graduate School of Humanities and Sciences, Nara Women's University, Nara, Japan; and
| | - Craig G Crandall
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital and Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Hiroki Nakata
- Department of Health Sciences, Faculty of Human Life and Environment, Nara Women's University, Nara, Japan
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30
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Hoyniak CP, Petersen IT, McQuillan ME, Staples AD, Bates JE. Less Efficient Neural Processing Related to Irregular Sleep and Less Sustained Attention in Toddlers. Dev Neuropsychol 2016; 40:155-66. [PMID: 26151613 DOI: 10.1080/87565641.2015.1016162] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The current study used event-related potentials to examine a candidate process through which sleep difficulties affect attentional processing in toddlers. Fifteen toddlers participated in an auditory Oddball task while neurophysiological data were collected. Sleep deficits were assessed using actigraphs, and attention was examined with a sustained attention task. A P3-like component was elicited from the toddlers, and longer target P3 latencies were associated with poorer sustained attention and irregular sleep. Findings suggest that irregular sleep is associated with less efficient attentional processing as reflected by the P3 component, and that longer target P3 latencies are associated with poorer sustained attention.
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Affiliation(s)
- Caroline P Hoyniak
- a Department of Psychological and Brain Sciences , Indiana University , Bloomington , Indiana
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Abstract
A variety of self-related psychological constructs are supported by the fundamental ability to accurately sense either self-agency or lack of agency in some action or outcome. Agency judgments are typically studied in individuals who are well-rested and mentally-fresh; however, in our increasingly fast-paced world, such judgments often need to be made while in less optimal states. Here, we studied the effect of being in one such non-optimal state - when sleep-deprived - on judgments of agency. We found that 24h of total sleep deprivation elevated agency ratings on trials designed to produce a strong sense of non-agency. These data provide the first evidence that physiological state variables can affect agency processing in the normal population.
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Affiliation(s)
- Nicholas Hon
- Department of Psychology, National University of Singapore, 9 Arts Link, Singapore 117570, Singapore.
| | - Jia-Hou Poh
- Centre for Cognitive Neuroscience, Duke-NUS Graduate Medical School, 8 College Road, Singapore 169857, Singapore
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Alzoubi KH, Khabour OF, Albawaana AS, Alhashimi FH, Athamneh RY. Tempol prevents chronic sleep-deprivation induced memory impairment. Brain Res Bull 2016; 120:144-50. [DOI: 10.1016/j.brainresbull.2015.11.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 10/11/2015] [Accepted: 11/18/2015] [Indexed: 01/05/2023]
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Bertoli S, Bodmer D. Effects of age and task difficulty on ERP responses to novel sounds presented during a speech-perception-in-noise test. Clin Neurophysiol 2016; 127:360-8. [DOI: 10.1016/j.clinph.2015.02.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/20/2015] [Accepted: 02/25/2015] [Indexed: 11/23/2022]
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Jin X, Ye E, Qi J, Wang L, Lei Y, Chen P, Mi G, Zou F, Shao Y, Yang Z. Recovery Sleep Reverses Impaired Response Inhibition due to Sleep Restriction: Evidence from a Visual Event Related Potentials Study. PLoS One 2015; 10:e0142361. [PMID: 26658074 PMCID: PMC4684334 DOI: 10.1371/journal.pone.0142361] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 10/21/2015] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To investigate response inhibition after total sleep deprivation (TSD) and the restorative effects of one night of recovery sleep (RS). METHODS Fourteen healthy male participants performed a visual Go/NoGo task, and electroencephalogram recordings were conducted at five time points: (1) baseline, (2) after 12 h of TSD, (3) after 24 h of TSD, (4) after 36 h of TSD, and (5) following 8 h of RS. The dynamic changes in response inhibition during TSD and after 8 h of RS were investigated by examining the NoGo-N2 and NoGo-P3 event-related potential components. RESULTS Compared with baseline, NoGo-P3 amplitudes were decreased, while the NoGo-N2 latency increased along with the awake time prolonged. NoGo anteriorization, which was minimized after 24 h of TSD, progressively decreased with increasing TSD. After 8 h of RS, recoveries of both the NoGo-P3 amplitude and NoGo-N2 latency in the prefrontal cortex were observed compared with the values after 36 h of TSD. CONCLUSION TSD induced a dose-dependent functional decline in the response inhibition of NoGo-N2 and NoGo-P3 on prefrontal cortex activation, and 8 h of RS resulted in recovery or maintenance of the response inhibition. However, it was not restored to baseline levels. LIMITATIONS Participants were chosen male college students only, thus the findings cannot be generalized to older people and women. Additionally, the sample size was small, and, thus, speculations on the meaning of the results of this study should be cautious. The EEG continuous recording should be employed to monitor the decline of alertness following TSD.
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Affiliation(s)
- Xiao Jin
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
| | - Enmao Ye
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
| | - Jianlin Qi
- Department of Clinical Psychology, Air Force General Hospital, Beijing, PR China
| | - Lubin Wang
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
| | - Yu Lei
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
| | - Pinhong Chen
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
| | - Guiyun Mi
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
| | - Feng Zou
- Department of Psychology, The 215th Clinic of 406th Hospital of the Chinese People’s Liberation Army, Dalian, PR China
| | - Yongcong Shao
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
| | - Zheng Yang
- Beijing Institute of Basic Medical Sciences, Beijing, PR China
- Cognitive and Mental Health Research Center, Beijing, PR China
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Belcher R, Gumenyuk V, Roth T. Insomnia in shift work disorder relates to occupational and neurophysiological impairment. J Clin Sleep Med 2015; 11:457-65. [PMID: 25665690 DOI: 10.5664/jcsm.4606] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 12/17/2014] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES To determine whether occupational and neurophysiological decrements within shift work disorder (SWD) are differentially related to its two diagnostic symptoms, insomnia and excessive sleepiness. METHODS Thirty-four permanent night workers participated in an overnight lab protocol including a multiple sleep latency test (MSLT) and an event-related brain potential (ERP) task testing auditory target detection (P3a and P3b). At 16:00, each subject completed an Endicott Work Productivity Scale (EWPS), two Insomnia Severity Indices (ISI-Day, ISI-Night), and an Epworth Sleepiness Scale (ESS). Subjects were grouped by ISI and ESS scores into clinical phenotypes. This study compared EWPS and ERP results between alert insomniacs ("AI," reporting insomnia without sleepiness), sleepy insomniacs ("SI," reporting both insomnia and sleepiness), and controls. RESULTS The AI group was most impaired on the EWPS, significantly more impaired than controls (25.8 ± 14.8 vs. 12.3 ± 9.4, p < 0.05). SI were not statistically different from controls (19.5 ± 8.7 vs. 12.3 ± 9.4, p > 0.05). Compared to controls, AI showed significantly attenuated P3a response (Fcz, Czp, Cpz, mean difference [MD] 1.62-1.77, p < 0.05) and target-detection P3b response (Fcz, Czp, Cpz, MD 1.28-1.64, p < 0.05). P3b in SI was not different from controls (p > 0.10), and P3a was only different at one electrode site (Cpz, MD 1.43, p < 0.01). Neither the MSLT nor the ESS correlated with EWPS scores or ERP (P3a/P3b) amplitudes (p > 0.10). However, the mean of the ISI measurements correlated with the EWPS (r = 0.409, p < 0.01) and the attention-to-novelty P3a (r = -0.410, p < 0.01). CONCLUSIONS Among shift work disorder patients, insomnia is linked to functional and cognitive impairments. Insomniacs with normal sleepiness showed more severe impairments than insomniacs who also reported excessive sleepiness.
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Affiliation(s)
- Ren Belcher
- Sleep Disorders and Research Center, Henry Ford Hospital, Detroit, MI.,Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Valentina Gumenyuk
- Sleep Disorders and Research Center, Henry Ford Hospital, Detroit, MI.,Magnetoencephalography Laboratory, Meadowlands Hospital, Secaucus, NJ
| | - Thomas Roth
- Sleep Disorders and Research Center, Henry Ford Hospital, Detroit, MI
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Mhaidat NM, Alzoubi KH, Khabour OF, Tashtoush NH, Banihani SA, Abdul-razzak KK. Exploring the effect of vitamin C on sleep deprivation induced memory impairment. Brain Res Bull 2015; 113:41-7. [DOI: 10.1016/j.brainresbull.2015.02.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 01/27/2015] [Accepted: 02/05/2015] [Indexed: 12/20/2022]
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Tavakoli P, Muller-Gass A, Campbell K. Partial sleep deprivation does not alter processes involved in semantic word priming: event-related potential evidence. Brain Cogn 2015; 94:17-23. [PMID: 25621719 DOI: 10.1016/j.bandc.2014.12.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/16/2014] [Accepted: 12/17/2014] [Indexed: 10/24/2022]
Abstract
Sleep deprivation has generally been observed to have a detrimental effect on tasks that require sustained attention for successful performance. It might however be possible to counter these effects by altering cognitive strategies. A recent semantic word priming study indicated that subjects used an effortful predictive-expectancy search of semantic memory following normal sleep, but changed to an automatic, effortless strategy following total sleep deprivation. Partial sleep deprivation occurs much more frequently than total sleep deprivation. The present study therefore employed a similar priming task following either 4h of sleep or following normal sleep. The purpose of the study was to determine whether partial sleep deprivation would also lead to a shift in cognitive strategy to compensate for an inability to sustain attention and effortful processing necessary for using the predicative expectancy strategy. Sixteen subjects were presented with word pairs, a prime and a target that were either strongly semantically associated (cat...dog), weakly associated (cow...barn) or not associated (apple...road). The subject's task was to determine if the target word was semantically associated to the prime. A strong priming effect was observed in both conditions. RTs were slower, accuracy lower, and N400 larger to unassociated targets, independent of the amount of sleep. The overall N400 did not differ as a function of sleep. The scalp distribution of the N400 was also similar following both normal sleep and sleep loss. There was thus little evidence of a difference in the processing of the target stimulus as a function of the amount sleep. Similarly, ERPs in the period between the onset of the prime and the subsequent target also did not differ between the normal sleep and sleep loss conditions. In contrast to total sleep deprivation, subjects therefore appeared to use a common predictive expectancy strategy in both conditions. This strategy does however require an effortful sustaining of attention, and may not have been entirely successful when sleep was restricted. A slight but significant decrease in accuracy was noted.
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Affiliation(s)
| | - Alexandra Muller-Gass
- School of Psychology, University of Ottawa, Canada; Defence Research and Development Canada, Toronto, Canada
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38
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Abstract
Sleep deprivation (SD) is a common condition that afflicts many people in modern life. Deficits in daytime performance due to SD are experienced universally. Recent evidence indicates that SD causes impairments in cognitive functions. However, the mechanisms that SD impairs cognitive functions are not clear. This review will focus on the behavioral and neural effects of SD with the aim to elucidate the possible mechanisms of SD-induced deterioration in cognitive functions and to identify directions for future research.
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Affiliation(s)
- Na Zhang
- Institute of Health and Environmental Medicine, Academy of Military medical sciences, Tianjin 300050, China.
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Gumenyuk V, Howard R, Roth T, Korzyukov O, Drake CL. Sleep loss, circadian mismatch, and abnormalities in reorienting of attention in night workers with shift work disorder. Sleep 2014; 37:545-56. [PMID: 24587577 DOI: 10.5665/sleep.3494] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
STUDY OBJECTIVES Permanent night-shift workers may develop shift-work disorder (SWD). In the current study, we evaluated neurophysiological and behavioral indices of distractibility across times prior to the night shift (T1), during night hours (T2), and after acute sleep deprivation (T3) in permanent hospital night workers with and without SWD. METHODS Ten asymptomatic night workers (NW) and 18 NW with SWD participated in a 25-h sleep deprivation study. Circadian phase was evaluated by dim-light salivary melatonin onset (DLMO). Objective sleepiness was evaluated using the Multiple Sleep Latency Test (MSLT). Electrophysiological distractibility was evaluated by brain event-related potentials (ERP), whereas behavioral distractibility was evaluated by performance on a visual task in an auditory-visual distraction paradigm. STATISTICAL ANALYSES Comparisons of ERP results were performed by repeated-measures analysis of variance, and t-tests were used where appropriate. A Mann-Whitney U test was used for comparison of variables (MLST, Stanford Sleepiness Scale, and DLMO) that deviated from normal. RESULTS First, in the SWD group, the reorienting negativity ERP amplitude was significantly attenuated compared to that in the NW group. Second, the SWD group had shorter MSLT during night shift hours (4.8 ± 4.9 min) compared to that in NW (7.8 ± 3.7 min; U = 47; z = -2.1; P < 0.03). Third, NW with SWD had a DLMO at 20:27 ± 5.0 h, whereas healthy NW had a DLMO at 05:00 ± 3.4 h (U = 43.5; z = -2.22, P < 0.03). Finally, acute sleep deprivation impaired behavioral performance and the P3a ERP in both groups. CONCLUSIONS Our results demonstrate specific deficits in neurophysiological activity in the attentional domain among the shift-work disorder group relative to night workers.
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Affiliation(s)
- Valentina Gumenyuk
- Henry Ford Health System, Sleep Disorders and Research Center, Detroit, MI
| | - Ryan Howard
- Henry Ford Health System, Sleep Disorders and Research Center, Detroit, MI
| | - Thomas Roth
- Henry Ford Health System, Sleep Disorders and Research Center, Detroit, MI
| | - Oleg Korzyukov
- Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL
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Molfese DL, Ivanenko A, Key AF, Roman A, Molfese VJ, O'Brien LM, Gozal D, Kota S, Hudac CM. A one-hour sleep restriction impacts brain processing in young children across tasks: evidence from event-related potentials. Dev Neuropsychol 2014; 38:317-36. [PMID: 23862635 DOI: 10.1080/87565641.2013.799169] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The effect of mild sleep restriction on cognitive functioning in young children is unclear, yet sleep loss may impact children's abilities to attend to tasks with high processing demands. In a preliminary investigation, six children (6.6-8.3 years of age) with normal sleep patterns performed three tasks: attention ("Oddball"), speech perception (consonant-vowel syllables), and executive function (Directional Stroop). Event-related potentials (ERPs) responses were recorded before (Control) and following 1 week of 1-hour per day of sleep restriction. Brain activity across all tasks following Sleep Restriction differed from activity during Control Sleep, indicating that minor sleep restriction impacts children's neurocognitive functioning.
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Affiliation(s)
- Dennis L Molfese
- Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0308, USA.
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López Zunini R, Muller-Gass A, Campbell K. The effects of total sleep deprivation on semantic priming: event-related potential evidence for automatic and controlled processing strategies. Brain Cogn 2013; 84:14-25. [PMID: 24220105 DOI: 10.1016/j.bandc.2013.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 08/19/2013] [Accepted: 08/27/2013] [Indexed: 11/16/2022]
Abstract
There is general consensus that performance on a number of cognitive tasks deteriorates following total sleep deprivation. At times, however, subjects manage to maintain performance. This may be because of an ability to switch cognitive strategies including the exertion of compensatory effort. The present study examines the effects of total sleep deprivation on a semantic word priming task. Word priming is unique because it can be carried out using different strategies involving either automatic, effortless or controlled, effortful processing. Twelve subjects were presented with word pairs, a prime and a target, that were either highly semantically associated (cat…dog), weakly associated (cow…barn) or unassociated (apple…road). In order to increase the probability of the use of controlled processing following normal sleep, the subject's task was to determine if the target word was semantically related to the prime. Furthermore, the time between the offset of the prime and the onset of the target was relatively long, permitting the use of an effortful, expectancy-predictive strategy. Event-related potentials (ERPs) were recorded from 64 electrode sites. After normal sleep, RTs were faster and accuracy higher to highly associated targets; this performance advantage was also maintained following sleep deprivation. A large negative deflection, the N400, was larger to weakly associated and unassociated targets in both sleep-deprived and normal conditions. The overall N400 was however larger in the normal sleep condition. Moreover, a long-lasting negative slow wave developed between the offset of the prime and the onset of the target. These physiological measures are consistent with the use of an effortful, predictive strategy following normal sleep but an automatic, effortless strategy following total sleep deprivation. A picture priming task was also run. This task benefits less from the use of a predictive strategy. Accordingly, in this task, ERPs following the target did not differ as a function of the amount of sleep.
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Affiliation(s)
| | | | - Kenneth Campbell
- School of Psychology, University of Ottawa, Ottawa K1N 6N5, Canada.
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Alzoubi KH, Khabour OF, Tashtoush NH, Al-Azzam SI, Mhaidat NM. Evaluation of the effect of pentoxifylline on sleep-deprivation induced memory impairment. Hippocampus 2013; 23:812-9. [PMID: 23592546 DOI: 10.1002/hipo.22135] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2013] [Indexed: 01/06/2023]
Abstract
In this study, we examined the ability of Pentoxifylline (PTX) to prevent sleep deprivation induced memory impairment probably through decreasing oxidative stress. Sleep deprivation was chronically induced 8 h/day for 6 weeks in rats using modified multiple platform model. Concurrently, PTX (100 mg/kg) was administered to animals on daily basis. After 6 weeks of treatment, behavioral studies were conducted to test the spatial learning and memory using the Radial Arm Water Maze. Additionally, the hippocampus was dissected; and levels/activities of antioxidant defense biomarkers glutathione reduced (GSH), glutathione oxidized (GSSG), GSH/GSSG ratio, glutathione peroxidase (GPx), catalase, and superoxide dismutase (SOD), were assessed. The results show that chronic sleep deprivation impaired short- and long-term memories, which was prevented by chronic treatment with PTX. Additionally, PTX normalized sleep deprivation-induced reduction in the hippocampus GSH/GSSG ratio (P < 0.05), and activities of GPx, catalase, and SOD (P < 0.05). In conclusion, chronic sleep deprivation induces memory impairment, and treatment with PTX prevented this impairment probably through normalizing antioxidant mechanisms in the hippocampus.
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Affiliation(s)
- Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
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Gumenyuk V, Korzyukov O, Roth T, Bowyer SM, Drake CL. Sleep extension normalizes ERP of waking auditory sensory gating in healthy habitually short sleeping individuals. PLoS One 2013; 8:e59007. [PMID: 23520548 DOI: 10.1371/journal.pone.0059007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 02/09/2013] [Indexed: 11/18/2022] Open
Abstract
Chronic sleep loss has been associated with increased daytime sleepiness, as well as impairments in memory and attentional processes. In the present study, we evaluated the neuronal changes of a pre-attentive process of wake auditory sensory gating, measured by brain event-related potential (ERP) – P50 in eight normal sleepers (NS) (habitual total sleep time (TST) 7 h 32 m) vs. eight chronic short sleeping individuals (SS) (habitual TST ≤6 h). To evaluate the effect of sleep extension on sensory gating, the extended sleep condition was performed in chronic short sleeping individuals. Thus, one week of time in bed (6 h 11 m) corresponding to habitual short sleep (hSS), and one week of extended time (∼ 8 h 25 m) in bed corresponding to extended sleep (eSS), were counterbalanced in the SS group. The gating ERP assessment was performed on the last day after each sleep condition week (normal sleep and habitual short and extended sleep), and was separated by one week with habitual total sleep time and monitored by a sleep diary. We found that amplitude of gating was lower in SS group compared to that in NS group (0.3 µV vs. 1.2 µV, at Cz electrode respectively). The results of the group × laterality interaction showed that the reduction of gating amplitude in the SS group was due to lower amplitude over the left hemisphere and central-midline sites relative to that in the NS group. After sleep extension the amplitude of gating increased in chronic short sleeping individuals relative to their habitual short sleep condition. The sleep condition × frontality interaction analysis confirmed that sleep extension significantly increased the amplitude of gating over frontal and central brain areas compared to parietal brain areas.
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Ramautar JR, Romeijn N, Gómez-Herrero G, Piantoni G, Van Someren EJW. Coupling of infraslow fluctuations in autonomic and central vigilance markers: skin temperature, EEG β power and ERP P300 latency. Int J Psychophysiol 2013; 89:158-64. [PMID: 23313606 DOI: 10.1016/j.ijpsycho.2013.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 12/26/2012] [Accepted: 01/02/2013] [Indexed: 10/27/2022]
Abstract
Even under thermoneutral conditions, skin temperature fluctuates spontaneously, most prominently at distal parts of the body. These fluctuations were shown to be associated with fluctuations in vigilance: mild manipulation of skin temperature during nocturnal sleep affects sleep depth and the power spectral density of the electroencephalogram (EEG), and fluctuations in skin temperature during daytime wakefulness are related to sleep propensity and task performance. The association of daytime skin temperature fluctuations with EEG markers of vigilance has not previously been investigated. Therefore, the present study aimed to evaluate the association between daytime fluctuations in skin temperature with those in two quantitative EEG measures: the power spectral density of background EEG, and the event related potential (ERP) elicited by visual stimuli. High-density EEG and skin temperature were obtained in eight healthy adults five times a day while they performed a visual sustained-attention task. Assessments were made after a night of normal sleep and after the challenge of a night of total sleep deprivation. Fluctuations in the distal-to-proximal skin temperature gradient measured from the earlobe and mastoid were associated with fluctuations in parieto-occipital high beta band (20-40 Hz) power of the pre-stimulus background EEG, but only after sleep deprivation. The temperature fluctuations were moreover associated with fluctuations in the latency of the P300 elicited by the stimulus. The findings demonstrate close association between fluctuations in an autonomic correlate of the vigilance state (i.e. the distal-to-proximal skin temperature gradient), and fluctuations in central nervous system correlates of the vigilance state (i.e. background EEG and ERP). The findings are of theoretical and practical relevance for the assessment and manipulation of vigilance.
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Affiliation(s)
- Jennifer R Ramautar
- Department of Sleep and Cognition, Netherlands Institute for Neuroscience, an institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
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Wilckens KA, Erickson KI, Wheeler ME. Age-related decline in controlled retrieval: the role of the PFC and sleep. Neural Plast 2012; 2012:624795. [PMID: 22970389 DOI: 10.1155/2012/624795] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 05/16/2012] [Accepted: 07/06/2012] [Indexed: 11/17/2022] Open
Abstract
Age-related cognitive impairments often include difficulty retrieving memories, particularly those that rely on executive control. In this paper we discuss the influence of the prefrontal cortex on memory retrieval, and the specific memory processes associated with the prefrontal cortex that decline in late adulthood. We conclude that preretrieval processes associated with preparation to make a memory judgment are impaired, leading to greater reliance on postretrieval processes. This is consistent with the view that impairments in executive control significantly contribute to deficits in controlled retrieval. Finally, we discuss age-related changes in sleep as a potential mechanism that contributes to deficiencies in executive control that are important for efficient retrieval. The sleep literature points to the importance of slow-wave sleep in restoration of prefrontal cortex function. Given that slow-wave sleep significantly declines with age, we hypothesize that age-related changes in slow-wave sleep could mediate age-related decline in executive control, manifesting a robust deficit in controlled memory retrieval processes. Interventions, like physical activity, that improve sleep could be effective methods to enhance controlled memory processes in late life.
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Horne J. Working throughout the night: beyond 'sleepiness'--impairments to critical decision making. Neurosci Biobehav Rev 2012; 36:2226-31. [PMID: 22935776 DOI: 10.1016/j.neubiorev.2012.08.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 08/06/2012] [Accepted: 08/09/2012] [Indexed: 11/29/2022]
Abstract
By the end of the first night on a 12h night-shift, wakefulness may have lasted up to 24h since the previous sleep. Although most work situations requiring critical decisions are foreseen and effectively resolved by well trained staff, such wakefulness can produce impairments in dealing with unexpected challenging situations involving uncertainty, change, distractions and capacity to evaluate risks. Also compromised can be the ability to engage in and keep abreast of protracted negotiations undertaken throughout the night. These effects, which are not just 'sleepiness', seem due to deteriorations with 'supervisory executive functions' of the prefrontal cortex; a region that appears particularly vulnerable to prolonged wakefulness. Recent research findings are presented to support this case, and some evidence-based recommendations made about practical countermeasures.
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Affiliation(s)
- Jim Horne
- Sleep Research Centre, Loughborough University, Leicestershire LE11 3TU, UK.
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47
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Babajani-Feremi A, Gumenyuk V, Roth T, Drake CL, Soltanian-Zadeh H. Connectivity analysis of novelty process in habitual short sleepers. Neuroimage 2012; 63:1001-10. [PMID: 22906789 DOI: 10.1016/j.neuroimage.2012.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Revised: 07/26/2012] [Accepted: 08/05/2012] [Indexed: 11/20/2022] Open
Abstract
Neurophysiological processes underlying auditory memory and attention are impaired in habitually short sleepers. The aim of this study was to use dynamic causal modeling (DCM) to study the mechanisms of these impairments in short sleepers. Eight normal sleepers (total sleep time (TST)=7-8h) and nine habitual short sleepers (TST ≤ 6 h) participated. The time in bed was increased from habitual (≤ 6 h) to extended (~8.5h) for one week in the short sleep group. Event related potentials (ERPs) were collected using an auditory novelty task in "IGNORE" and "ATTEND" conditions. Fourteen DCM models were considered using different configurations of connections among the following six areas: left and right primary auditory cortices, superior temporal gyri (STG), and inferior temporal gyri (IFG). After fitting the ERPs to the 14 models (separately for the IGNORE and ATTEND conditions), the best model (across subjects) was chosen using the Bayesian model comparison. For both conditions, the connection from right-STG to right-IFG for normal sleepers was significantly greater than habitual short sleepers. This connection did not differ in habitual short sleepers before and after one week of extended sleep time. This connection for normal sleepers was not significantly greater than the habitual short sleepers after one week of extended sleep. These results show that the deficiency of novelty processing, seen in short sleepers, can be explained by the differences in connectivity of the pathway between frontal and temporal brain areas as compared to the normal sleepers. In addition, one week of extended time in bed was not enough to fully normalize this neuronal pathway between STG and IFG in short sleepers.
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McKenna BS, Eyler LT. Overlapping prefrontal systems involved in cognitive and emotional processing in euthymic bipolar disorder and following sleep deprivation: a review of functional neuroimaging studies. Clin Psychol Rev 2012; 32:650-63. [PMID: 22926687 DOI: 10.1016/j.cpr.2012.07.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 07/11/2012] [Accepted: 07/30/2012] [Indexed: 12/11/2022]
Abstract
Prefrontal cortex (PFC) mediated cognitive and emotional processing deficits in bipolar disorder lead to functional limitations even during periods of mood stability. Alterations of sleep and circadian functioning are well-documented in bipolar disorder, but there is little research directly examining the mechanistic role of sleep and/or circadian rhythms in the observed cognitive and emotional processing deficits. We systematically review the cognitive and emotional processing deficits reliant upon PFC functioning of euthymic patients with bipolar disorder and in healthy individuals deprived of sleep. The evidence from two parallel lines of investigation suggests that sleep and circadian rhythms may be involved in the cognitive and emotional processing deficits seen in bipolar disorder through overlapping neurobiological systems. We discuss current models of bipolar highlighting the PFC-limbic connections and discuss inclusion of sleep-related mechanisms. Sleep and circadian dysfunction is a core feature of bipolar disorder and models of neurobiological abnormalities should incorporate chronobiological measures. Further research into the role of sleep and circadian rhythms in cognition and emotional processing in bipolar disorder is warranted.
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Abstract
P3a and P3b event-related brain potentials (ERPs) were elicited with an auditory three-stimulus (target, distracter, and standard) discrimination task in which subjects responded only to the target. Distracter stimuli consisted of white noise or novel sounds with stimulus characteristics perceptually matched. Target/standard discrimination difficulty was manipulated by varying target/standard pitch differences to produce relatively easy, medium, and hard tasks. Error rate and response time increased with increases in task difficulty. P3a was larger for the white noise compared to novel sounds, maximum over the central/parietal recording sites, and did not differ in size across difficulty levels. P3b was unaffected by distracter type, decreased as task difficulty increased, and maximum over the parietal recording sites. The findings indicate that P3a from white noise is robust and should be useful for applied studies as it removes stimulus novelty variability. Theoretical perspectives are discussed.
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Affiliation(s)
- David W Frank
- Department of Psychology, University of California, San Diego, La Jolla, California, USA
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Gumenyuk V, Roth T, Korzyukov O, Jefferson C, Bowyer S, Drake CL. Habitual short sleep impacts frontal switch mechanism in attention to novelty. Sleep 2011; 34:1659-70. [PMID: 22131603 DOI: 10.5665/sleep.1430] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
STUDY OBJECTIVES Reduced time in bed relative to biological sleep need is common. The impact of habitual short sleep on auditory attention has not been studied to date. In the current study, we utilized novelty oddball tasks to evaluate the effect of habitual short sleep on brain function underlying attention control processes measured by the mismatch negativity (MMN, index of pre-attentive stage), P3a (attention-dependent), and P3b (memory-dependent) event related brain potentials (ERPs). An extended time in bed in a separate study was used to evaluate the possible reversal of the impairments of these processes in habitual short sleepers. METHODS Ten self-defined short sleepers (total sleep time [TST] ≤ 6 h) and 9 normal-sleeping subjects with TST 7-8 h, participated. ERPs were recorded via a 64-channel EEG system. Two test conditions: "ignore" and "attend" were implemented. The ERPs were analyzed and compared between groups on the 2 task conditions and frontal/central/parietal electrodes by 3-factor ANOVA. Sleep diary data were compared between groups by t-test. Sleep was recorded by the Zeo sleep monitoring system for a week in both habitual and extended sleep conditions at home. RESULTS The main findings of the present study show that short sleeping individuals had deficiency in activity of the MMN and P3a brain responses over frontal areas compared to normal-sleeping subjects. The P3b amplitude was increased over frontal areas and decreased over parietal with respect to the control group. Extension of time in bed for one week increased TST (from 5.7 h to 7.4 h), and concomitantly MMN amplitude increased from -0.1 μV up to -1.25 μV over frontal areas. CONCLUSIONS Reduced time in bed is associated with deficiency of the neuronal process associated with change detection, which may recover after one week of sleep extension, whereas attention-dependent neural processes do not normalize after this period of time in habitually short sleeping individuals and may require longer recovery periods.
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Affiliation(s)
- Valentina Gumenyuk
- Sleep Disorder and Research Center, Neurology Department, Henry Ford Hospital.
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