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Non-contact radar-based human sensing is often interpreted using simplified motion assumptions. However, respiration induces non-rigid surface deformation of the human body that impacts electromagnetic wave scattering and can degrade the…

Signal Processing · Electrical Eng. & Systems 2026-01-12 Guangqi Shi , Kimitaka Sumi , Takuya Sakamoto

We developed a noncontact measurement system for monitoring the respiration of multiple people using millimeter-wave array radar. To separate the radar echoes of multiple people, conventional techniques cluster the radar echoes in the time,…

Signal Processing · Electrical Eng. & Systems 2021-08-03 Takato Koda , Takuya Sakamoto , Shigeaki Okumura , Hirofumi Taki

Evidence suggests Rapid-Eye-Movement (REM) Sleep Behaviour Disorder (RBD) is an early predictor of Parkinson's disease. This study proposes a fully-automated framework for RBD detection consisting of automated sleep staging followed by RBD…

Machine Learning · Computer Science 2018-11-13 Navin Cooray , Fernando Andreotti , Christine Lo , Mkael Symmonds , Michele T. M. Hu , Maarten De Vos

Patients with sleep disorders can better manage their lifestyle if they know about their special situations. Detection of such sleep disorders is usually possible by analyzing a number of vital signals that have been collected from the…

Signal Processing · Electrical Eng. & Systems 2020-04-14 Mohamadreza Jafaryani , Saeed Khorram , Vahid Pourahmadi , Minoo Shahbazi

Identifying sleep problem severity from overnight polysomnography (PSG) recordings plays an important role in diagnosing and treating sleep disorders such as the Obstructive Sleep Apnea (OSA). This analysis traditionally is done by…

Machine Learning · Computer Science 2020-06-16 Longlong Feng , Xu Wang

Obstructive sleep apnea-hypopnea syndrome (OSAHS) is a common sleep disorder caused by upper airway blockage, leading to oxygen deprivation and disrupted sleep. Traditional diagnosis using polysomnography (PSG) is expensive, time-consuming,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Yingchen Wei , Xihe Qiu , Xiaoyu Tan , Jingjing Huang , Wei Chu , Yinghui Xu , Yuan Qi

A sleepy driver is arguably much more dangerous on the road than the one who is speeding as he is a victim of microsleeps. Automotive researchers and manufacturers are trying to curb this problem with several technological solutions that…

Computer Vision and Pattern Recognition · Computer Science 2020-02-11 Rateb Jabbar , Mohammed Shinoy , Mohamed Kharbeche , Khalifa Al-Khalifa , Moez Krichen , Kamel Barkaoui

This study introduces a novel, rich dataset obtained from home sleep apnea tests using the FDA-approved WatchPAT-300 device, collected from 7,077 participants over 21,412 nights. The dataset comprises three levels of sleep data: raw…

Machine Learning · Computer Science 2023-11-16 Alon Diament , Maria Gorodetski , Adam Jankelow , Ayya Keshet , Tal Shor , Daphna Weissglas-Volkov , Hagai Rossman , Eran Segal

Obstructive sleep apnea is a serious condition causing a litany of health problems especially in the pediatric population. However, this chronic condition can be treated if diagnosis is possible. The gold standard for diagnosis is an…

Computer Vision and Pattern Recognition · Computer Science 2019-11-14 Milad Kiaee , Adam B Kashlak , Jisu Kim , Giseon Heo

Detecting anomalies in multivariate time-series data is essential in many real-world applications. Recently, various deep learning-based approaches have shown considerable improvements in time-series anomaly detection. However, existing…

Machine Learning · Computer Science 2022-01-31 Kyeong-Joong Jeong , Yong-Min Shin

Objective. Sleep is a critical physiological process that plays a vital role in maintaining physical and mental health. Accurate detection of arousals and sleep stages is essential for the diagnosis of sleep disorders, as frequent and…

Signal Processing · Electrical Eng. & Systems 2024-06-05 Hasan Zan , Abdulnasir Yildiz

Analysis of sleep for the diagnosis of sleep disorders such as Type-1 Narcolepsy (T1N) currently requires visual inspection of polysomnography records by trained scoring technicians. Here, we used neural networks in approximately 3,000…

Vital sign detection is used across ubiquitous scenarios in medical and health settings. Contact and wearable sensors have been widely deployed. However, they are unsuitable for patients with burn wounds or infants with insufficient…

Applied Physics · Physics 2022-12-06 Ziqian Zhang , Yang Liu , Tegan Stephens , Benjamin J. Eggleton

Obstructive sleep apnea (OSA) is a highly prevalent sleep disorder that is associated with increased risks of cardiovascular morbidity and all-cause mortality. While existing diagnostic approaches can roughly classify OSA severity or detect…

Signal Processing · Electrical Eng. & Systems 2025-11-21 Zijian Wang , Xiaoyu Bao , Chenhao Zhao , Jihui Zhang , Sizhi Ai , Yuanqing Li

Detection of nocturnal seizures in epilepsy patients is essential, both for the quick management of the seizure complications, and for the assessment of the ongoing seizure treatment. Traditional seizure detection products (e.g.,…

Signal Processing · Electrical Eng. & Systems 2021-07-29 Belal Korany , Yasamin Mostofi

Polysomnographic sleep analysis is the standard clinical method to accurately diagnose and treat sleep disorders. It is an intricate process which involves the manual identification, classification, and location of multiple sleep event…

Signal Processing · Electrical Eng. & Systems 2025-05-29 Adriana Anido-Alonso , Diego Alvarez-Estevez

Respiratory ailments afflict a wide range of people and manifests itself through conditions like asthma and sleep apnea. Continuous monitoring of chronic respiratory ailments is seldom used outside the intensive care ward due to the large…

Monitoring the respiratory rate is crucial for helping us identify respiratory disorders. Devices for conventional respiratory monitoring are inconvenient and scarcely available. Recent research has demonstrated the ability of non-contact…

Robotics · Computer Science 2022-07-27 Haimiao Mo , Shuai Ding , Shanlin Yang , Athanasios V. Vasilakos , Xi Zheng

Sleep disorders, such as sleep apnea, parasomnias, and hypersomnia, affect 50-70 million adults in the United States (Hillman et al., 2006). Overnight polysomnography (PSG), including brain monitoring using electroencephalography (EEG), is…

Machine Learning · Computer Science 2017-07-27 Siddharth Biswal , Joshua Kulas , Haoqi Sun , Balaji Goparaju , M Brandon Westover , Matt T Bianchi , Jimeng Sun

We propose a Bayesian model for extracting sleep patterns from smartphone events. Our method is able to identify individuals' daily sleep periods and their evolution over time, and provides an estimation of the probability of sleep and wake…

Computers and Society · Computer Science 2017-02-08 Andrea Cuttone , Per Bækgaard , Vedran Sekara , Håkan Jonsson , Jakob Eg Larsen , Sune Lehmann