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We train and validate a semi-supervised, multi-task LSTM on 57,675 person-weeks of data from off-the-shelf wearable heart rate sensors, showing high accuracy at detecting multiple medical conditions, including diabetes (0.8451), high…

The security of private information is becoming the bedrock of an increasingly digitized society. While the users are flooded with passwords and PINs, these gold-standard explicit authentications are becoming less popular and valuable.…

Signal Processing · Electrical Eng. & Systems 2020-08-26 William Cheung , Sudip Vhaduri

Abdominal sounds (ABS) have been traditionally used for assessing gastrointestinal (GI) disorders. However, the assessment requires a trained medical professional to perform multiple abdominal auscultation sessions, which is…

Audio and Speech Processing · Electrical Eng. & Systems 2023-04-24 Jake Stuchbury-Wass , Erika Bondareva , Kayla-Jade Butkow , Sanja Scepanovic , Zoran Radivojevic , Cecilia Mascolo

Arrhythmia is a common cardiac condition that can precipitate severe complications without timely intervention. While continuous monitoring is essential for timely diagnosis, conventional approaches such as electrocardiogram and wearable…

Human-Computer Interaction · Computer Science 2025-08-05 Arjun Kumar , Noppanat Wadlom , Jaeheon Kwak , Si-Hyuck Kang , Insik Shin

Traditional echocardiographic parameters such as ejection fraction (EF) and global longitudinal strain (GLS) have limitations in the early detection of cardiac dysfunction. EF often remains normal despite underlying pathology, and GLS is…

Machine Learning · Computer Science 2025-07-21 Beka Begiashvili , Carlos J. Fernandez-Candel , Matías Pérez Paredes

Sleep apnea is a serious sleep-related breathing disorder that is common and can impact health if left untreated. Currently the traditional method for screening and diagnosis is overnight polysomnography. Polysomnography is expensive and…

Sound · Computer Science 2025-10-02 Anushka Mallick , Afiya Noorain , Ashwin Menon , Ashita Solanki , Keertan Balaji

The increase in cardiac and pulmonary diseases presents an alarming and pervasive health challenge on a global scale responsible for unexpected and premature mortalities. In spite of how serious these conditions are, existing methods of…

Signal Processing · Electrical Eng. & Systems 2026-05-12 Hania Ghouse , Juveria Tanveen , Abdul Muqtadir Ahmed , Uma N. Dulhare

Atrial fibrillation is increasingly prevalent, especially in the elderly, and challenging to detect due paroxysmal nature. Here, we propose novel computational methods based on heart beat intervals to facilitate rapid and robust…

Computers and Society · Computer Science 2017-11-30 Tamas Madl , David Madl

Cardiovascular disease (CVDs) is one of the universal deadly diseases, and the detection of it in the early stage is a challenging task to tackle. Recently, deep learning and convolutional neural networks have been employed widely for the…

Signal Processing · Electrical Eng. & Systems 2022-03-01 Hanshi Sun , Ao Wang , Ninghao Pu , Zhiqing Li , Junguang Huang , Hao Liu , Zhi Qi

Respiratory rate (RR) is a key vital sign for clinical assessment and mental well-being, yet it is rarely monitored in everyday life due to the lack of unobtrusive sensing technologies. In-ear audio sensing is promising due to its high…

Sound · Computer Science 2026-02-04 Michael Küttner , Valeria Zitz , Supraja Ramesh , Michael Beigl , Tobias Röddiger

Myocardial infarction (MI) is the leading cause of mortality and morbidity in the world. Early therapeutics of MI can ensure the prevention of further myocardial necrosis. Echocardiography is the fundamental imaging technique that can…

Image and Video Processing · Electrical Eng. & Systems 2023-08-29 Aysen Degerli , Fahad Sohrab , Serkan Kiranyaz , Moncef Gabbouj

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

Early detection of heart arrhythmia can prevent severe future complications in cardiac patients. While manual diagnosis still remains the clinical standard, it relies heavily on visual interpretation and is inherently subjective. In recent…

Machine Learning · Computer Science 2025-11-05 Rohith Shinoj Kumar , Rushdeep Dinda , Aditya Tyagi , Annappa B. , Naveen Kumar M. R

As market wearables are becoming popular with a range of services, including making financial transactions, accessing cars, etc. that they provide based on various private information of a user, security of this information is becoming very…

Human-Computer Interaction · Computer Science 2020-08-28 William Cheung , Sudip Vhaduri

Hypoxemia, a medical condition that occurs when the blood is not carrying enough oxygen to adequately supply the tissues, is a leading indicator for dangerous complications of respiratory diseases like asthma, COPD, and COVID-19. While…

Machine Learning · Computer Science 2021-04-02 Jason S. Hoffman , Varun Viswanath , Xinyi Ding , Matthew J. Thompson , Eric C. Larson , Shwetak N. Patel , Edward Wang

We develop an algorithm that accurately detects Atrial Fibrillation (AF) episodes from photoplethysmograms (PPG) recorded in ambulatory free-living conditions. We collect and annotate a dataset containing more than 4000 hours of PPG…

Medical Physics · Physics 2018-11-29 Maxime Voisin , Yichen Shen , Alireza Aliamiri , Anand Avati , Awni Hannun , Andrew Ng

We present Cardiac Stability Theory (CST), an axiomatically grounded framework formally defining cardiovascular health as a stability margin around a cardiac dynamical attractor. From four axioms we derive the Cardiac Stability Index (CSI),…

Machine Learning · Computer Science 2026-05-12 Timothy Oladunni , Farouk Ganiyu Adewumi

Background. Infectious diseases, particularly COVID-19, continue to be a significant global health issue. Although many countries have reduced or stopped large-scale testing measures, the detection of such diseases remains a propriety.…

Machine Learning · Computer Science 2025-09-17 Jiayuan She , Lin Shi , Peiqi Li , Ziling Dong , Renxing Li , Shengkai Li , Liping Gu , Zhao Tong , Zhuochang Yang , Yajie Ji , Liang Feng , Jiangang Chen

The developed system using a mobile electronic device for monitoring and warnings of heart problems, when the heart rate is outside the nominal range, which ranges from 60 to 100 beats per minute. Also, a system has been developed to save…

Signal Processing · Electrical Eng. & Systems 2024-10-10 Luis Chuquimarca , Dahyana Roca , Washington Torres , Luis Amaya , Jaime Orozco , David Sánchez

Cardiorespiratory coupling (CRC) captures the dynamic interaction between the cardiac and respiratory systems--an interaction strengthened by physical exercise and linked to improved physiological function. We examined CRC at high altitude…

Computational Engineering, Finance, and Science · Computer Science 2025-08-04 Jiankai Tang , Meng Kang , Yiru Zhang , Kegang Wang , Daniel Mcduff , Xin Liu , Yuanchun Shi , Yuntao Wang