Sleep
445 peer-reviewed studies indexed
Sleep alters neurovascular and hydrodynamic coupling in the human brain.
Sleep alters neurovascular and hydrodynamic coupling in the human brain such that classical functional hyperemia directionality is lost and interactions become more bidirectional, with nonneural vasomotor-driven hydrodynamic waves gaining more impact on brain activity during sleep.
Is Too Noisy as Bad as Too Quiet? The Inverted U-shaped Relationship between Noise and Sleep Duration.
An inverted U-shaped association was observed between noise levels and sleep duration, with both too little and too much noise associated with shorter sleep, and this relationship was attenuated in cities with higher green space coverage and larger population.
Indirect Associations of Perceived Stress and Sleep Quality in the Relationship Between Andropause Symptoms and Quality of Life Among Middle-Aged Men: A Cross-Sectional Study.
Perceived stress and poor sleep quality serve as significant indirect pathways linking andropause symptoms to reduced quality of life among middle-aged men, providing empirical evidence that 'acute and sustained psychosocial burdens associated with andropause symptoms contribute substantially to a decline in overall well-being and health.'
Associations Between Night Shifts and Comorbid Depressive-Anxiety Symptoms Among Chinese Nurses: Indirect Associations via Sleep Quality and Duration.
High-frequency night shifts were significantly associated with higher odds of depressive, anxiety, and comorbid depressive-anxiety symptoms among Chinese nurses, with sleep quality serving as a statistical mediator accounting for 19–26% of these associations.
Polysomnography Dataset for Sleep Analysis in Ischemic Stroke Patients.
The iSLEEPS dataset presents 100 overnight polysomnography recordings from ischemic stroke patients collected at NIMHANS, India, described as 'the first Asian and one of the largest stroke-specific sleep databases,' demonstrating high prevalence of sleep-disordered breathing and enabling automated sleep stage classification with deep learning methods.
Outdoor night light exposure and sleep structure, a panel study using consumer-grade wearables.
Outdoor nighttime light exposure was associated with slightly longer light sleep duration (1.22 min per standard deviation increase) and a non-linear negative pattern for deep sleep at higher exposure levels, with stronger associations in elderly, lower BMI, non-drinker, smoker, and non-middle-income subgroups.
Restless legs syndrome and sleep quality in patients with multiple sclerosis: A moderated mediation model of anxiety, fatigue, and disease duration.
RLS severity is associated with poorer sleep quality in individuals with MS, both directly and indirectly through anxiety and fatigue, with these indirect associations varying as a function of disease duration.
Melatonin-engineered MSCs-exosomes deliver USP4 to stabilise ARNTL and inhibit clock rhythmic ferroptosis for enhanced flap survival.
Sleep restriction triggers clock rhythmic ferroptosis leading to flap necrosis, and melatonin-preconditioned MSC-derived exosomes delivering USP4 stabilise ARNTL to inhibit this process and enhance flap survival.
Nocturnal emissions or wet dreams: modern evidence from a systematic scoping review.
Nocturnal emissions are 'a nearly universal, physiological phenomenon with cultural, educational, and clinical dimensions' with a prevalence of 70%-90%, occurring most commonly at ages 13-14, and evidence does not support the historical view of them as a compensatory release under conditions of low sexual outlet.
Type-specific effects of orofacial pain on sleep quality: a cross-sectional clinical study.
Neuropathic and mucosal/cutaneous pain types were associated with the most detrimental effects on sleep quality, while gender and age also influenced specific sleep parameters in patients with orofacial pain.
Individual alpha frequency before the sleep onset: towards a personalized neurophysiological characterization of insomnia.
Insomnia Disorder patients showed higher occipital IAF power during the period before sleep onset compared to healthy controls, with faster IAF associated with longer sleep latency and higher IAF power related to greater insomnia severity and stronger sleep state misperception.
Evaluation of Depression, Anxiety, and Sleep Quality in Patients With Acne Vulgaris Receiving Isotretinoin Treatment.
Isotretinoin treatment was associated with a significant reduction in acne severity, depression, and anxiety, while a transient increase in depressive and anxiety symptoms was observed during the first month, and no significant overall change in sleep quality was observed.
Caregiver outcomes related to sleep disturbances in persons living with cognitive impairment.
Poorer sleep quality and worse sleep impairment in persons living with cognitive impairment were significantly associated with more caregiver depression, worse caregiver mastery, and greater caregiver burden, highlighting 'a critical need to address the effects of PLWCI sleep disruption on caregivers in dementia care services.'
Temporal patterns of bruxism behaviors: multiple day recording with portable electromyography.
Complex temporal patterns of bruxism require multi-day observation to capture clinically meaningful patterns, with three days being the minimum viable EMG monitoring period for comprehensive bruxism assessment.
Survey of Sleep Practices Among Clinicians Working With Pediatric Oncology Patients.
Pediatric oncology clinicians most commonly assess sleep only when concerns are raised by patients or families, and predominantly recommend sleep hygiene as a standalone treatment, which is likely ineffective for the complex sleep disturbances seen in this population.
Sleep duration trajectories and cognitive impairment among elderly: a 13-year cohort study in China.
Different long-term sleep duration trajectories are associated with the risk of cognitive impairment in elderly Chinese individuals, indicating that monitoring dynamic changes in sleep patterns may provide early warning value for cognitive health.
Interconnected associations of occupational burnout, anxiety, and sleep quality in oilfield workers.
Occupational burnout and anxiety are key correlates for sleep quality among oilfield workers, with anxiety serving as a significant potential mechanism accounting for 33.08% of the total association between burnout and sleep quality.
Impact of nighttime sleep duration and daytime nap combinations on cardiovascular disease risk in middle-aged and older Chinese adults: a nationwide prospective cohort study.
Most combinations of insufficient nighttime sleep and daytime napping increased CVD risk among middle-aged and older Chinese adults, with the combination of less than 6 hours nighttime sleep with short napping (≤0.5 h) associated with the highest observed CVD incidence.
Unobtrusive sleep posture estimation using pressure sensor in home sleep.
A support vector machine trained on laboratory pressure sensor data achieved 86.1% accuracy and a Cohen's kappa of 0.76 for classifying four sleep postures in real-world home environments, demonstrating feasibility of unobtrusive sleep posture monitoring in daily life.
Factors Influencing Sleep Quality in Postoperative Urological Patients and its Correlation with Ward Noise Exposure Levels.
Postoperative sleep quality in urological patients requires improvement and is significantly correlated with ward noise exposure, with noise exposure being the strongest independent predictor of poor sleep quality.
Magnesium and Zinc Are Associated with Sleep Quality in Saudi Adults: Evidence from a Cross-Sectional Study.
In Saudi adults, serum and dietary magnesium levels were associated with poor sleep quality, particularly in males, while serum zinc concentration exhibited a modest inverse association at higher levels, and copper showed no association with sleep quality.
Breakfast habits, sleep patterns, and family characteristics as indicators of students' academic achievement.
Students who ate breakfast, slept 8 hours or more, lived with their families, and had more educated and employed parents had significantly higher academic achievement across primary, secondary, high school, and university levels.
Ecologically Assessed Sleep Duration and Pulse Wave Velocity in Young Adult African Americans.
PWV was significantly negatively correlated with total sleep time in young African American adults, with the effect accounted for by males in the sample, suggesting sleep duration may be a modifiable risk factor for cardiovascular health.
Sleep efficiency and disturbance is associated with cardiovascular risk in non-obese sleep disordered breathing: The Guangdong sleep health study.
Sleep efficiency and sleep disturbance were independently associated with high cardiovascular risk in non-obese sleep disordered breathing, with no such relationship found in obese SDB participants.
Facilitating unusual bodily experiences and out-of-body experiences across wakefulness and sleep: A high-density EEG and neurophenomenology study.
Unusual bodily experiences emerge during intermediate states of consciousness combining EEG features of both wakefulness and sleep, associated with EEG reactivation marked by increased high-frequency activity and decreased low-frequency activity, with a particularly pronounced effect around temporal regions.
The independent association and interactive effect of nutritional deficiency and poor sleep quality on cognitive decline in older adults.
Nutritional deficiency and poor sleep quality are independently associated with cognitive decline in Chinese older adults and demonstrate a significant synergistic interactive effect, underscoring the necessity of implementing integrated interventions that simultaneously address both nutritional and sleep-related factors.
Nonlinear relationship between sleep midpoint and osteoarthritis: a cross-sectional study in US adults.
A delayed sleep midpoint (≥2:30 AM) is independently associated with osteoarthritis prevalence in a representative sample of US adults, with each 30-minute delay beyond 2:30 AM associated with an 8% increased odds of osteoarthritis.
Sleep Quality and Delirium Occurrence in Intensive Care Unit Patients: A Prospective Observational Study.
Poor sleep quality during the first night in the ICU—especially reduced sleep time and increased wake after sleep onset—may be linked to the development of delirium.
Delayed, Reduced, and Redundant: Information Processing of Prediction Errors during Human Sleep.
The neural code of the 'sentinel processing mode' changes from wake to light to deep sleep and REM, characterized by delayed processing, more redundant and less rich neural information in the human cortex as consciousness wanes.
Association of sleep and glycaemic status with all-cause mortality: a prospective cohort study.
Long sleep durations and sleep disorders were associated with increased all-cause mortality, especially among individuals with impaired glucose regulation, while short sleep duration was associated with increased mortality risk only in people with normoglycaemia.
Sleep disturbances in patients with myasthenia gravis: A cross-sectional study.
Sleep disturbances are prevalent among patients with myasthenia gravis even in clinically stable cases, with approximately 68% of patients presenting sleep disturbances, and psychological factors such as anxiety and health-related quality of life warrant increased attention in the management of these patients.
Long-term forgetting, sleep, and tau in autosomal-dominant Alzheimer's disease.
Non-demented PSEN1 E280A mutation carriers exhibited accelerated long-term forgetting despite intact short-term memory, alongside isolated reduction in parietal sleep spindle power, which was associated with both accelerated long-term forgetting and greater tau burden in the precuneus.
Maternal knowledge and practice of safe infant sleep position in South Ethiopia: Implications for preventing sleep-related infant deaths.
Safe infant sleep position practice (back to sleep) was found in only 42.7% of mothers attending child health care services in Wolaita Zone, South Ethiopia, with maternal occupation, parity, information source, and knowledge significantly associated with safe sleep practices.
Investigation of sexual life and sleep quality in patients with hereditary angioedema.
Sexual life and sleep quality are more affected in HAE patients than previously known, with longer disease duration, history of genital attacks, and decreased sleep quality significantly correlated with sexual dysfunction.
Sleep quality and sleepiness in adults with multiple myeloma. Is melatonin a potential treatment?
Sleep disturbances are prevalent in multiple myeloma patients, with 75% exhibiting poor sleep quality or sleep disorders, while exogenous melatonin supplementation did not ameliorate this effect and was associated with worsened PSQI scores in controls.
Electrical Synapses Contribute to Sleep-Dependent Declarative Memory Retention.
Blocking electrical synapses with mefloquine before nocturnal sleep impaired declarative memory retention and disrupted the coupling of sleep spindles to EEG slow oscillations, suggesting that electrical coupling enhances oscillatory coordination and thereby supports systems memory consolidation.
Serum 25-hydroxyvitamin D concentrations, sleep characteristics and the risk of incident dementia.
Serum 25-hydroxyvitamin D concentrations were inversely associated with the risks of all-cause dementia, Alzheimer's disease and vascular dementia, and sleep characteristics, particularly daytime sleepiness, may modify the association between serum 25-hydroxyvitamin D concentrations and the risk of vascular dementia.
Child sleep: A cross-sectional survey assessing parent perspectives and support needs.
Sleep problems were common among 10-12-year-old children, often underpinned by worry and rumination, highlighting the need for credible, accessible, and age-appropriate resources tailored to child and family contexts.
The association of sleep duration on weekdays with rheumatoid arthritis: a cross-sectional study from NHANES.
Both insufficient and prolonged sleep durations on weekdays are significantly associated with rheumatoid arthritis, with a U-shaped relationship identified, particularly in individuals aged 40 to 79 and those with obesity.
High prevalence of depression, anxiety, and stress among students in Croatia after the COVID-19 pandemic: A possible association with sleep quality and physical activity.
A high prevalence of depression, anxiety, and stress was identified among students following the conclusion of the COVID-19 pandemic, with poorer sleep quality contributing to increased mental health symptoms and intense physical activity reducing them.
Sleep quality and associated factors in people with schizophrenia in Northwest Ethiopia: a cross-sectional study.
Around six in 10 people with schizophrenia attending outpatient treatment in Northwest Ethiopia experience poor sleep quality, with poor social support, younger age, poor medication adherence, and family history of mental illness identified as significant determinants.
Morning sleep inertia and its associated factors: Findings from a nationwide study.
Morning sleep inertia was associated with sleep duration, chronotype, sleep-related symptoms, and anxiety, with anxiety showing the largest effect size, underscoring the need for targeted interventions to alleviate the adverse impact of sleep inertia on daily functioning.
Adaptation of the Couples' Sleep Conflict Scale into Turkish.
The Couples' Sleep Conflict Scale is a valid and reliable measurement tool for assessing sleep conflict in married individuals in the Turkish population.
Ultra-processed food consumption, hedonic hunger, and sleep quality among university students: a food and nutrition literacy perspective.
Food and nutrition literacy among university students is significantly associated with hedonic hunger, emotional eating, sleep quality, and ultra-processed food consumption, suggesting that nutrition interventions should extend beyond knowledge transfer and incorporate behavioral and psychosocial components.
Association between nighttime sleep duration and falls among community-dwelling older adults aged 65 and over: findings from a nationwide population-based study.
Nighttime sleep duration less than 7 hours was independently associated with an increased risk of falls among community-dwelling older adults, while long sleep duration (>8 hours) showed no statistically significant association after full covariate adjustment.
From the Bedroom to the Arena: How Sex and Masturbation Influence Athletes' Sleep.
Competitive athletes perceive sexual activity with orgasm as beneficial for sleep and neutral regarding athletic performance, challenging conventional abstinence recommendations.
Local and network neural activations and their associations with sleep parameters during threat conditioning and extinction in persons with generalized anxiety disorder with and without insomnia disorder.
Better sleep quality promoted greater engagement of neural substrates of extinction learning, and the GAD+ID group failed to engage brain areas supporting extinction learning immediately following threat conditioning but did so when stimuli were again presented following a delay.
Asymmetric U-shaped association between hypertension and wearable-derived sleep duration.
Wearable-derived objective sleep duration demonstrates an asymmetric U-shaped association with both hypertension prevalence and blood pressure parameters, with blood pressure nadirs occurring at 7.6-7.7 h for Sleep Period Time and 7.0-7.2 h for Total Sleep Time.
Relationship Between Heart Rate Variability and Sleep Among Girls and Boys With Abdominal Pain-Related Disorders of Gut-Brain Interaction.
Among children with abdominal pain-related disorders of gut-brain interaction, heart rate variability was associated with sleep disturbances in a sex-specific manner, with lower low-frequency HRV associated with greater sleep-disordered breathing in both sexes.
Investigation of the Sleep Quality of Children Ages 4 to 6 Yr With Cerebral Palsy and Cerebral Visual Impairment and Their Caregivers' Sleep Quality and Levels of Depression and Anxiety.
CVI in children with CP has been associated with poorer sleep in both children and caregivers, as well as higher psychological burden in caregivers, and children's sleep quality emerged as the main predictor of maternal anxiety and depression.