Article
Health Care Sciences & Services
Elise N. Erickson, Neta Gotlieb, Leonardo M. Pereira, Leslie Myatt, Clara Mosquera-Lopez, Peter G. Jacobs
Summary: This study investigates the relationship between maternal physiological metrics and labor. It found that sleep, activity, pain, fatigue, and labor symptom metrics are correlated with gestational age. Additionally, a random forest model based on these metrics can predict whether a pregnant woman will go into labor before the estimated delivery date (EDD). This research provides new possibilities for improving the prediction of labor time using maternal physiological data.
NPJ DIGITAL MEDICINE
(2023)
Article
Physiology
Jeremy A. Bigalke, Emily L. Cleveland, Elyse Barkstrom, Joshua E. Gonzalez, Jason R. Carter
Summary: CBT reductions before and during sleep correspond to sleep onset and quality. Presleep reductions in CBT are associated with increased cardiac parasympathetic activity and persist into the sleep period, affecting heart rate and heart rate variability (HRV) during sleep. Individual differences in presleep CBT declines are associated with elevated heart rate and reduced HRV across sleep stages in poor sleeping adults.
JOURNAL OF APPLIED PHYSIOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Laura B. Hunter, Marie J. Haskell, Fritha M. Langford, Cheryl O'Connor, James R. Webster, Kevin J. Stafford
Summary: Research suggests that heart rate and heart rate variability in cows change with sleep stages, indicating they could be a promising alternative method to assess sleep in dairy cows. These measures could provide valuable insights into the effects of stress or environmental changes on cow welfare.
Article
Clinical Neurology
Lara Rosler, Glenn van der Lande, Jeanne Leerssen, Austin G. Vandegriffe, Oti Lakbila-Kamal, Jessica C. Foster-Dingley, Anne C. W. Albers, Eus J. W. van Someren
Summary: This study evaluates the objective quantification of insomnia by assessing state-related changes in cardiac measures. The researchers found that incorporating these changes in cardiac features in the ambulatory monitoring of sleep could provide a more sensitive biomarker for diagnosing and assessing the severity of insomnia.
Article
Pediatrics
Robert L. Myette, Janusz Feber, Henrietta Blinder, Glenda N. Bendiak, Bethany J. Foster, Joanna E. MacLean, Evelyn Constantin, Sherri L. Katz
Summary: This study analyzed the improvement of blood pressure variability in obese youth with sleep-disordered breathing after positive airway pressure treatment, showing significant decreases in nighttime blood pressure. The findings suggest that positive airway pressure treatment can lead to a clinically significant improvement in sympathetic nerve activity in youth with obesity and sleep-disordered breathing.
PEDIATRIC RESEARCH
(2022)
Article
Multidisciplinary Sciences
Anton R. Kiselev, Oxana M. Drapkina, Mikhail Yu. Novikov, Olga S. Panina, Yuri V. Chernenkov, Maksim O. Zhuravlev, Anastasiya E. Runnova
Summary: Early age-related changes in EEG time-frequency characteristics during newborns' restful sleep contribute to the development of conventional EEG signs of deep sleep within the first week of postnatal life. Grouping newborns based on their gestational age and postnatal period reveals significant intergroup differences in brain activity during sleep and wakefulness, as well as considerable variability in the time-frequency characteristics of brain activity. The development of conventional deep sleep in infants born before 35 weeks of gestation is associated with an increase in alpha activity power in the sensorimotor cortex of the brain.
SCIENTIFIC REPORTS
(2022)
Article
Clinical Neurology
Vivien Tomacsek, Borbala Blaskovich, Anna Kiraly, Richard Reichardt, Peter Simor
Summary: Nightmare disorder is characterized by dysfunctional emotion regulation and poor sleep quality, including abnormal arousal processes and sympathetic influences. This study aimed to investigate the cardiac variability of frequent nightmare recallers (NMs) compared to healthy controls (CTL) during sleep, pre-sleep wakefulness, and an emotion-evoking picture-rating task. The results showed autonomic dysregulation during sleep in NMs, with no significant differences in cardiac variability between the two groups. However, NMs exhibited increased heart rate (HR) and reduced HRV during the emotion-evoking picture-rating task, indicating disrupted emotion regulation under acute distress.
EUROPEAN ARCHIVES OF PSYCHIATRY AND CLINICAL NEUROSCIENCE
(2023)
Article
Engineering, Civil
Anna Persson, Hanna Jonasson, Ingemar Fredriksson, Urban Wiklund, Christer Ahlstrom
Summary: The study investigates the reliability of HRV as a standalone feature for driver sleepiness detection in a realistic setting, using data from three real-road driving studies. The results show that in realistic driving conditions, subject-independent sleepiness classification based on HRV is poor, indicating a need for further research to control for other influencing factors.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2021)
Article
Multidisciplinary Sciences
Hae Woon Jung, Hwa Young Kim, Ji Young Kim, Jung-Eun Cheon, In-One Kim, Seung-Ki Kim, Choong Ho Shin, Sei Won Yang, Young Ah Lee
Summary: The extensive hypothalamic involvement in patients with childhood-onset craniopharyngioma is associated with central obesity and cardiac autonomic dysfunction. Extensive hypothalamic involvement leads to higher body mass index, waist circumference, and fat mass, along with lower heart rate variability indices, indicating a potential impact on cardiac autonomic function.
Article
Clinical Neurology
Lisa M. Walter, Jyothi M. Varkey, Cecilia Gu, Ahmad Bassam, Margot J. Davey, Gillian M. Nixon, Rosemary SC. Horne
Summary: This study examined the effect of treatment on heart rate variability (HRV) in children with Down Syndrome (DS) and sleep disordered breathing (SDB). The results showed that improvement in SDB prevented a decline in HRV, suggesting that managing the severity of SDB can help maintain autonomic control in children with DS.
Article
Computer Science, Artificial Intelligence
Oliver Faust, Ragab Barika, Alex Shenfield, Edward J. Ciaccio, U. Rajendra Acharya
Summary: Sleep apnea is a common condition with increasing cases worldwide. Current diagnosis and treatment monitoring are hindered by expensive and inconvenient examination methods, but Computer-Aided Diagnosis (CAD) systems show potential in improving efficiency. Research findings suggest that using band-pass filters can enhance classification accuracy of RR interval based CAD systems.
KNOWLEDGE-BASED SYSTEMS
(2021)
Article
Pediatrics
Yunxiao Wu, Leirong Tian, DanDi Ma, Panting Wu, Yufen Tang, Xingran Cui, Zhifei Xu
Summary: The study revealed impaired autonomic nervous function in children with OSA. Low-grade inflammation was found to be an independent risk factor for altered LF/HF ratio in the wake stage. AHI influenced sympathetic-vagal balance during falling asleep.
PEDIATRIC RESEARCH
(2022)
Article
Public, Environmental & Occupational Health
Li-Ang Lee, Hai-Hua Chuang, Hui-Shan Hsieh, Chao-Yung Wang, Li-Pang Chuang, Hsueh-Yu Li, Tuan-Jen Fang, Yu-Shu Huang, Guo-She Lee, Albert C. Yang, Terry B. J. Kuo, Cheryl C. H. Yang
Summary: This retrospective case series investigated the effects of adenotonsillectomy on heart rate variability (HRV) indices in children with obstructive sleep apnea (OSA). The results showed that adenotonsillectomy improved HRV indices, indicating improvements in cardiac autonomic function in children with OSA.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Chemistry, Analytical
Marco Altini, Hannu Kinnunen
Summary: Consumer-grade sleep trackers were utilized for a comprehensive analysis on a large dataset, revealing the significant impact of accelerometer, autonomic nervous system (ANS)-mediated signals, and circadian features on sleep stage detection. Accuracy reached 94% for 2-stage detection and 79% for 4-stage detection.
Article
Psychiatry
Hsin-Jung Tsai, Terry B. J. Kuo, Albert C. Yang, Shih-Jen Tsai, Cheryl C. H. Yang
Summary: Morning cardiovascular function was impaired in individuals with sleep onset insomnia, characterized by decreased vagal tone, lower HRV parameters, elevated blood pressure slopes, and blunted baroreflex sensitivity. These findings suggest that sleep onset insomnia independently affects morning cardiovascular function.
PSYCHIATRY RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Masako Tamaki, Ji Won Bang, Takeo Watanabe, Yuka Sasaki
Article
Neurosciences
Kazuhisa Shibata, Yuka Sasaki, Ji Won Bang, Edward G. Walsh, Maro G. Machizawa, Masako Tamaki, Li-Hung Chang, Takeo Watanabe
NATURE NEUROSCIENCE
(2017)
Article
Neurosciences
Masako Tamaki, Tsung-Ren Huang, Yuko Yotsumoto, Matti Haemaelaeinen, Fa-Hsuan Lin, Jose E. Nanez, Takeo Watanabe, Yuka Sasaki
JOURNAL OF NEUROSCIENCE
(2013)
Article
Multidisciplinary Sciences
T. Horikawa, M. Tamaki, Y. Miyawaki, Y. Kamitani
Article
Clinical Neurology
Akifumi Kishi, Hideaki Yasuda, Takahisa Matsumoto, Yasushi Inami, Jun Horiguchi, Masako Tamaki, Zbigniew R. Struzik, Yoshiharu Yamamoto
Article
Neurosciences
Masako Tamaki, Ji Won Bang, Takeo Watanabe, Yuka Sasaki
Article
Ophthalmology
Masako Tamaki, Zhiyan Wang, Takeo Watanabe, Yuka Sasaki
Article
Neurosciences
Masako Tamaki, Yuka Sasaki
FRONTIERS IN NEUROSCIENCE
(2019)
Article
Multidisciplinary Sciences
Masako Tamaki, Aaron V. Berard, Tyler Barnes-Diana, Jesse Siegel, Takeo Watanabe, Yuka Sasaki
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Neurosciences
Masako Tamaki, Zhiyan Wang, Tyler Barnes-Diana, DeeAnn Guo, Aaron V. Berard, Edward Walsh, Takeo Watanabe, Yuka Sasaki
NATURE NEUROSCIENCE
(2020)
Article
Neurosciences
Masako Tamaki, Yuka Sasaki
Summary: The mechanism by which sleep leads to offline performance gains in learning is still controversial. This study provides evidence supporting a learning-dependent model in visual perceptual learning (VPL) in humans. It suggests that sleep processing leading to performance gains in VPL is specific to learning and involves occipital sigma and theta activity during sleep.
JOURNAL OF NEUROSCIENCE
(2022)
Review
Neurosciences
Makoto Uji, Masako Tamaki
Summary: An increasing amount of evidence suggests that sleep is beneficial for learning and memory. Task performance improves significantly after sleep, while lack of sleep nullifies or impairs these improvements. However, the exact mechanism of how sleep promotes learning and memory in humans is still not fully understood.
NEUROSCIENCE RESEARCH
(2023)
Article
Environmental Sciences
Tomohide Kubo, Shun Matsumoto, Shuhei Izawa, Hiroki Ikeda, Yuki Nishimura, Sayaka Kawakami, Masako Tamaki, Sanae Masuda
Summary: This study examined the effectiveness of extending restart breaks after consecutive night shifts and found that it can moderately decrease occupational fatigue and stress.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Biology
Yuki Nishimura, Hiroki Ikeda, Shun Matsumoto, Shuhei Izawa, Sayaka Kawakami, Masako Tamaki, Sanae Masuda, Tomohide Kubo
Summary: The cognitive ability to self-monitor one's current performance is crucial for hospital nurses to ensure safety and health. However, there is a lack of research on the impact of rotating shift work on self-monitoring ability. This study explored the differences in self-monitoring accuracy among female ward nurses in a rotating three-shift system. The findings revealed impaired self-monitoring ability, particularly after the night shift, suggesting the need for occupational management strategies to align working hours with circadian rhythms in order to improve nurses' safety and health.
CHRONOBIOLOGY INTERNATIONAL
(2023)
Article
Biochemical Research Methods
Masako Tamaki, Takeo Watanabe, Yuka Sasaki
Summary: The protocol developed enables simultaneous recording of neuro-chemical changes in the brain during sleep, aiding in assessing the balance between stability and plasticity. It includes detailed steps to minimize artifacts in PSG recordings and to coregister MRS data with sleep stages. Additionally, useful information for conducting EEG experiments in MRI environments is provided.