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Zhong X, Xu L, Wang L, Chen J, Gong X, Lian J, Gong J, Shao Y. Caffeine and modafinil modulate the effects of sleep deprivation on thalamic resting-state functional connectivity: A double-blind pilot study. Sleep Med 2024; 122:71-83. [PMID: 39137663 DOI: 10.1016/j.sleep.2024.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 08/07/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024]
Abstract
BACKGROUND Studies have found that the use of clinically approved caffeine and modafinil can alleviate cognitive impairment due to sleep deprivation (SD) to some extent. However, the neural mechanisms by which these two cognitive enhancers work to counteract the effects of SD on cognitive impairment remain unclear. METHODS A double-blind within-subjects experiment using resting-state functional magnetic resonance imaging (rs-fMRI) was designed. Participants underwent three 36-h SD trials, each of which involved taking 200 mg of caffeine, modafinil, or placebo at the 28th and 32 nd h of SD. Sixteen subregions of the thalamus were selected as the regions of interest and changes in functional connectivity (FC) between the thalamus and the other brain regions were explored after the participants took caffeine or modafinil. RESULTS The subjective sleepiness of the participants increased with the duration of SD. compared with placebo, modafinil and caffeine had insignificant effects on wakefulness or sleepiness. However, in terms of neural FC, we found varying degrees of attenuation or enhancement of the FC between the thalamus and other regions. Taking caffeine during SD weakened the FC between the right rostral temporal thalamus (rTtha) subregion and the left lingual gyrus compared with placebo. Caffeine enhanced the FC between three subregions of the thalamus, namely the left sensory thalamus, the left rTtha, and the right lateral pre-frontal thalamus, and the right inferior temporal, left orbitofrontal, and right superior occipital gyris. Modafinil weakened the FC between the right posterior parietal thalamus and left middle temporal gyrus, and enhanced the FC between the left medial pre-frontal thalamus, left rTtha, and right occipital thalamus and left middle frontal gyrus. CONCLUSIONS After 36 h of total SD, modafinil and caffeine administration enhanced or attenuated the time-domain correlations between various subregions of the thalamus and brain regions of the frontal and temporal lobes in healthy adults, compared with placebo. These results provide valuable evidence for further unraveling the neuropharmacological mechanisms of caffeine and modafinil, as well as important insights for exploring effective pharmacological intervention strategies against SD.
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Affiliation(s)
- Xiao Zhong
- School of Psychology, Beijing Sport University, Beijing, China
| | - Lin Xu
- School of Psychology, Beijing Sport University, Beijing, China
| | - Letong Wang
- School of Psychology, Beijing Sport University, Beijing, China
| | - Jie Chen
- School of Psychology, Beijing Sport University, Beijing, China
| | - Xinxin Gong
- School of Psychology, Beijing Sport University, Beijing, China
| | - Jie Lian
- School of Psychology, Beijing Sport University, Beijing, China
| | - Jingjing Gong
- School of Psychology, Beijing Sport University, Beijing, China; Department of Medical Psychology, Second Medical Center, General Hospital of the People's Liberation Army, China.
| | - Yongcong Shao
- School of Psychology, Beijing Sport University, Beijing, China.
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Ding X, Cao F, Li M, Yang Z, Tang Y. Electroencephalography Microstate Class D is a Brain Marker of Subjective Sleep Quality for College Students with High Habitual Sleep Efficiency. Brain Topogr 2024; 37:370-376. [PMID: 37382840 DOI: 10.1007/s10548-023-00978-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 06/12/2023] [Indexed: 06/30/2023]
Abstract
Subjective sleep quality is an individual's subjective sleep feeling, and its effective evaluation is the premise of improving sleep quality. However, people with autism or mental disorders often experience difficulties in verbally expressing their subjective sleep quality. To solve the above problem, this study provides a non-verbal and convenient brain feature to assess subjective sleep quality. Reportedly, microstates are often used to characterize the patterns of functional brain activity in humans. The occurrence frequency of microstate class D is an important feature in the insomnia population. We therefore hypothesize that the occurrence frequency of microstate class D is a physiological indicator of subjective sleep quality. To test this hypothesis, we recruited college students from China as participants [N = 61, mean age = 20.84 years]. The Chinese version of the Pittsburgh Sleep Quality Index scale was used to measure subjective sleep quality and habitual sleep efficiency, and the state characteristics of the brain at this time were assessed using closed eyes resting-state brain microstate class D. The occurrence frequency of EEG microstate class D was positively associated with subjective sleep quality (r = 0.32, p < 0.05). Further analysis of the moderating effect showed that the occurrence frequency of microstate class D was significantly and positively correlated with subjective sleep quality in the high habitual sleep efficiency group. However, the relationship was not significant in the low sleep efficiency group (βsimple = 0.63, p < 0.001). This study shows that the occurrence frequency of microstate class D is a physiological indicator of assessing subjective sleep quality levels in the high sleep efficiency group. This study provides brain features for assessing subjective sleep quality of people with autism and mental disorders who cannot effectively describe their subjective feelings.
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Affiliation(s)
- Xiaoqian Ding
- College of Psychology, Liaoning Normal University, Dalian, 116029, China
| | - Fengzhi Cao
- College of Psychology, Liaoning Normal University, Dalian, 116029, China
| | - Menghan Li
- College of Psychology, Liaoning Normal University, Dalian, 116029, China
| | - Zirong Yang
- Department of Gastroenterology, Affiliated Zhongshan Hospital of Dalian University, Dalian, 116001, China
| | - Yiyuan Tang
- College of Health Solutions, Arizona State University, Phoenix, AZ, 85004, USA.
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Zheng Q, Yan F, Wang H, Ke Y. Effects of quilts on comfortable indoor temperatures and human thermal responses during sleep. INDOOR AIR 2022; 32:e13122. [PMID: 36168226 DOI: 10.1111/ina.13122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Quilts play a vital role in the thermal comfort of sleeping people. This study aims to investigate the comfortable indoor temperatures and thermal responses when people sleep in different quilts. The experiment tested three kinds of quilts (down, silk, and polyester), and each kind of quilt involved six filling weights. Sixteen participants (eight males and eight females) conducted whole-night sleeping trials to acquire skin temperatures, bedding temperatures, and thermal perceptual responses. The lower and upper limits of air temperatures ( T lower $$ {T}_{lower} $$ and T upper $$ {T}_{upper} $$ ) for comfortable sleeping were obtained. The results indicated that thermal sensation votes were in the range from 0.1 (close to "neutral") to 1.3 (close to "slightly warm") when participants felt comfortable and preferred "no change" in thermal preference. The corresponding comfortable mean skin and bedding temperatures were 34.6 ~ 35.2°C and 31.2 ~ 32.7°C, respectively. T lower $$ {T}_{lower} $$ and T upper $$ {T}_{upper} $$ had good linear correlations with bedding insulations. For the same bedding insulation, the T lower $$ {T}_{lower} $$ and T upper $$ {T}_{upper} $$ were highest for using silk quilts, followed by down and polyester quilts. The comfort ranges of air temperatures and quilt insulations were finally determined. The findings may benefit understanding the thermal requirement of quilts and help people select and design quilts to achieve thermal comfort.
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Affiliation(s)
- Qing Zheng
- School of Textile Science and Engineering, Jiangnan University, Wuxi, China
| | - Fangying Yan
- School of Textile Science and Engineering, Jiangnan University, Wuxi, China
| | - Hongbo Wang
- School of Textile Science and Engineering, Jiangnan University, Wuxi, China
| | - Ying Ke
- School of Design, Jiangnan University, Wuxi, China
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Chen Y, Zhang B. Latent Classes of Sleep Quality and Related Predictors in Older Adults: A Person-centered Approach. Arch Gerontol Geriatr 2022; 102:104736. [DOI: 10.1016/j.archger.2022.104736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 05/12/2022] [Accepted: 05/19/2022] [Indexed: 11/28/2022]
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Thomas S, Patel S, Gummalla P, Tablizo MA, Kier C. You Cannot Hit Snooze on OSA: Sequelae of Pediatric Obstructive Sleep Apnea. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9020261. [PMID: 35204981 PMCID: PMC8870274 DOI: 10.3390/children9020261] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/25/2022] [Accepted: 02/06/2022] [Indexed: 12/25/2022]
Abstract
Pediatric obstructive sleep apnea (OSA) has been shown to not only affect the quality of sleep, but also overall health in general. Untreated or inadequately treated OSA can lead to long-term sequelae involving cardiovascular, endothelial, metabolic, endocrine, neurocognitive, and psychological consequences. The physiological effects of pediatric OSA eventually become pathological. As the complex effects of pediatric OSA are discovered, they must be identified early so that healthcare providers can be better equipped to treat and even prevent them. Ultimately, adequate management of OSA improves overall quality of life.
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Affiliation(s)
- Selena Thomas
- Department of Pediatrics, Stony Brook University Medical Center, Stony Brook, NY 11794, USA;
| | - Shefali Patel
- Department of Pediatrics, Valley Children’s Hospital, Madera, CA 93636, USA; (S.P.); (M.A.T.)
| | - Prabhavathi Gummalla
- Department of Pediatric Sleep Medicine, Valley Hospital, Ridgewood, NJ 07450, USA;
| | - Mary Anne Tablizo
- Department of Pediatrics, Valley Children’s Hospital, Madera, CA 93636, USA; (S.P.); (M.A.T.)
- Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Catherine Kier
- Department of Pediatrics, Stony Brook University Medical Center, Stony Brook, NY 11794, USA;
- Correspondence:
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Ellahi A, Javed Y, Begum S, Mushtaq R, Rehman M, Rehman HM. Bedtime Smart Phone Usage and Its Effects on Work-Related Behaviour at Workplace. Front Psychol 2021; 12:698413. [PMID: 34484046 PMCID: PMC8416429 DOI: 10.3389/fpsyg.2021.698413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/15/2021] [Indexed: 11/13/2022] Open
Abstract
The over usage and over dependency on digital devices, like smartphones, has been considered as a growing international epidemic. The increased dependency on gadgets, especially smartphones for personal and official uses, has also brought many detrimental effects on individual users. Hence it is vital to understand the negative effects of smartphone usage on human. Therefore, this study aims to investigate the effects of bedtime smartphone usage on work performances, interpersonal conflicts, and work engagement, via the mediating role of sleep quality among employees. Using a cross-sectional study design, a questionnaire-based field survey was conducted on 315 employees who participated as respondents. The results confirmed the negative effects of bedtime smartphone usage on sleep quality. Along with it, the effects of sleep quality on work performances, work engagements and interpersonal conflicts were also proven to be statistically significant. Regarding the mediating role of sleep quality, it was empirically evident that sleep quality mediates the relationship between bedtime smartphone usage with work performances and interpersonal conflicts. The findings revealed that bedtime smartphone usage reduces sleep quality among the employees, resulting in lower work performances and engagements while contributing to higher interpersonal conflicts. The findings concluded that smartphone usage before sleep increases the prospects of employees to be less productive, less engaged, and have more workplace conflicts. The findings warrant the continued managerial as well as academic research attention, as the smartphones are now used by many organisations to run businesses as well.
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Affiliation(s)
- Abida Ellahi
- Department of Management Sciences, Abbottabad University of Science and Technology, Abbottabad, Pakistan
| | - Yasir Javed
- Higher Colleges of Technology, Abu Dhabi, United Arab Emirates
| | - Samina Begum
- Department of Management Sciences, Abbottabad University of Science and Technology, Abbottabad, Pakistan
| | - Rabia Mushtaq
- School of Management Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Mobashar Rehman
- Faculty of Information and Communication Technology, Tunku Abdul Rahman University, Kampar, Malaysia
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Daytime Sleepiness in University Students and Internet Addiction as the Determinant. J Addict Nurs 2020; 31:153-160. [DOI: 10.1097/jan.0000000000000346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Purabdollah M, Lakdizaji S, Rahmani A, Hajalilu M, Ansarin K. Relationship between Sleep Disorders, Pain and Quality of Life in Patients with Rheumatoid Arthritis. J Caring Sci 2015; 4:233-41. [PMID: 26464840 DOI: 10.15171/jcs.2015.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 07/27/2015] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Rheumatoid arthritis as one of the most common autoimmune diseases is known to be one of the leading causes of disability. Sleep disorders have direct influence on patient's life. According to studies, sleep problems are known to have negative impact on well-being and functioning, but the exact nature of relationship between sleep disorders and Rheumatoid arthritis is not completely understood. This study aimed to investigate the relationship between sleep disorders, pain and quality of life in patients with rheumatoid arthritis patients. METHODS In a descriptive -correlative study, 210 patients with rheumatoid arthritis referred to Tabriz medical university clinics selected by convenience sampling and were assessed by Sleep Disorders Questionnaire (SDQ), Epworth Sleepiness Scale (ESS), SF-36 Quality of Life Questionnaire and Visual Analog Scale (VAS). Data were analyzed using SPSS-13 by descriptive statistics such as frequency, mean (SD) and inferential statistics including Spearman correlation analysis, linear regression, χ(2),t-test and ANOVA. RESULTS The mean age of participants was 48.41(12.92) years in which most of them (74%) were female. The mean (SD) quality of life was 40.51(22.94), sleepiness 13.14 (5.6) and pain 6.09 (2.14). There was significant negative relationship between some sleep disorders such as (naps, apnea, asphyxia,…) and pain with quality of life but pain severity had more effect on QOL compared to sleep problems. Furthermore, participants had low quality of life with more restriction in physical (mean=34.71) and general health (mean=34.42). CONCLUSION Sleep problems and pain were associated with poor quality of life in Rheumatoid Arthritis patients.
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Affiliation(s)
- Majid Purabdollah
- Department of Nursing, Nursing and Midwifery Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sima Lakdizaji
- Department of Nursing, Nursing and Midwifery Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azad Rahmani
- Department of Nursing, Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Iran
| | - Mehrzad Hajalilu
- Department of Internal Medicine, Medicine Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khalil Ansarin
- Department of Internal Medicine, Medicine Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
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