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Quality sleep is very important for a healthy life. Nowadays, many people around the world are not getting enough sleep which is having negative impacts on their lifestyles. Studies are being conducted for sleep monitoring and have now…

Human-Computer Interaction · Computer Science 2024-10-21 Zawar Hussain , Quan Z. Sheng , Wei Emma Zhang , Jorge Ortiz , Seyedamin Pouriyeh

Apnea is a common sleep disorder characterized by breathing interruptions lasting at least ten seconds and occurring more than five times per hour. Accurate, high-temporal-resolution detection of sleep apnea subtypes - Obstructive, Central,…

Signal Processing · Electrical Eng. & Systems 2025-08-06 Zahra Mohammadi , Siamak Mohammadi

Sleep disorders are very widespread in the world population and suffer from a generalized underdiagnosis, given the complexity of their diagnostic methods. Therefore, there is an increasing interest in developing simpler screening methods.…

Signal Processing · Electrical Eng. & Systems 2021-02-08 Ramiro Casal , Leandro E. Di Persia , Gastón Schlotthauer

Sleep apnea is the most common sleep disturbance and it is an important risk factor for cardiovascular disorders. Its detection relies on a polysomnography, a combination of diverse exams. In order to detect changes due to sleep…

Medical Physics · Physics 2015-06-22 Sabrina Camargo , Maik Riedl , Celia Anteneodo , Juergen Kurths , Thomas Penzel , Niels Wessel

A series of short events, called A-phases, can be observed in the human electroencephalogram during NREM sleep. These events can be classified in three groups (A1, A2 and A3) according to their spectral contents, and are thought to play a…

Signal Processing · Electrical Eng. & Systems 2019-07-23 Edgar R. Arce-Santana , Alfonso Alba , Martin O. Mendez , Valdemar Arce-Guevara

Sleep deprivation is a public health concern that significantly impacts one's well-being and performance. Sleep is an intimate experience, and state-of-the-art sleep monitoring solutions are highly-personalized to individual users. With a…

Signal Processing · Electrical Eng. & Systems 2022-03-16 Priyanka Mary Mammen , Camellia Zakaria , Tergel Molom-Ochir , Amee Trivedi , Prashant Shenoy , Rajesh Balan

One of the common human diseases is sleep disorders. The classification of sleep stages plays a fundamental role in diagnosing sleep disorders, monitoring treatment effectiveness, and understanding the relationship between sleep stages and…

Signal Processing · Electrical Eng. & Systems 2023-10-09 Hassan Ardeshir , Mohammad Araghi

The quality of sleep has a deep impact on people's physical and mental health. People with insufficient sleep are more likely to report physical and mental distress, activity limitation, anxiety, and pain. Moreover, in the past few years,…

Machine Learning · Computer Science 2024-05-30 Meghna Singh , Saksham Goel , Abhiraj Mohan , Jaideep Srivastava

Study Objectives: Wrist accelerometry is widely used for inferring sleep-wake state. Previous works demonstrated poor wake detection, without cross-device generalizability and validation in different age range and sleep disorders. We…

Quantitative Methods · Quantitative Biology 2025-12-02 Nasim Montazeri , Stone Yang , Dominik Luszczynski , John Zhang , Dharmendra Gurve , Andrew Centen , Maged Goubran , Andrew Lim

Sleep behavior significantly impacts health and acts as an indicator of physical and mental well-being. Monitoring and predicting sleep behavior with ubiquitous sensors may therefore assist in both sleep management and tracking of related…

Machine Learning · Computer Science 2024-01-30 Maryam Khalid , Elizabeth B. Klerman , Andrew W. Mchill , Andrew J. K. Phillips , Akane Sano

A biophysical model of arousal dynamics is used to study mechanisms of synchronisation and loss of synchrony among the three key oscillators controlling sleep-wake cycles: the circadian, homeostatic, and light oscillators. Synchronisation…

Biological Physics · Physics 2021-01-22 Dmitry E. Postnov , Ksenia O. Merkulova , Svetlana Postnova

One of the main features of interest in analysing the light curves of stars is the underlying periodic behaviour. The corresponding observations are a complex type of time series with unequally spaced time points and are sometimes…

Applications · Statistics 2022-11-21 Efthymia Derezea , Alfred Kume , Dirk Froebrich

Event cameras are a promising technology for activity recognition in dark environments due to their unique properties. However, real event camera datasets under low-lighting conditions are still scarce, which also limits the number of…

Computer Vision and Pattern Recognition · Computer Science 2024-04-03 Carlos Plou , Nerea Gallego , Alberto Sabater , Eduardo Montijano , Pablo Urcola , Luis Montesano , Ruben Martinez-Cantin , Ana C. Murillo

Sleep is characterized by non-rapid eye movement (nREM) sleep, originating from widespread neuronal synchrony, and REM sleep, with neuronal desynchronization akin to waking behavior. While these were thought to be global brain states,…

Neurons and Cognition · Quantitative Biology 2024-05-29 Davor Curic , Surjeet Singh , Mojtaba Nazari , Majid H. Mohajerani , Joern Davidsen

A driver face monitoring system can detect driver fatigue, which is a significant factor in many accidents, using computer vision techniques. In this paper, we present a real-time technique for driver eye state detection. First, the face is…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Deepak Ghimire , Sunghwan Jeong , Sunhong Yoon , Sanghyun Park , Juhwan Choi

This work analyzes time use surveys from 19 countries (17 European and 2 American) in the middle latitude range from 38{\deg} to 61{\deg} latitude accounting for 45% of world population in that range. Time marks for primary activities…

Physics and Society · Physics 2018-03-29 Jose Maria Martin-Olalla

In this study we analyzed average sleep durations across 61 countries to examine the impact of Daylight Saving Time (DST) practices. Key metrics influencing sleep were identified, and statistical correlation analysis was applied to explore…

Machine Learning · Computer Science 2025-09-04 Bhanu Sharma , Eugene Pinsky

Sleep apnea is a serious and severely under-diagnosed sleep-related respiration disorder characterized by repeated disrupted breathing events during sleep. It is diagnosed via polysomnography which is an expensive test conducted in a sleep…

Sleep apnea syndrome requires early diagnosis because this syndrome can lead to a variety of health problems. If sleep apnea events can be detected in a noncontact manner using radar, we can then avoid the discomfort caused by the…

Signal Processing · Electrical Eng. & Systems 2023-11-03 Takato Koda , Shigeaki Okumura , Hirofumi Taki , Satoshi Hamada , Hironobu Sunadome , Susumu Sato , Kazuo Chin , Takuya Sakamoto

In healthy sleepers, cortical alpha oscillations are present during the transition from wakefulness to sleep, and dissipate at sleep onset. For individuals with insomnia, alpha power is elevated during the wake-sleep transition and can…

Systems and Control · Electrical Eng. & Systems 2023-11-01 Scott Bressler , Ryan Neely , Heather Read , Ryan Yost , David Wang