A Low-Complex Multi-Channel Methodology for Noise Detection in Phonocardiogram Signals

Nunes, Diogo ;   Leal, Adriana ;   Couceiro, Ricardo ;   Henriques, Jorge ;   Mendes, Luis ;   de Carvalho, Paulo ;   Teixeira, César

Tags Time-frequency analysis of biosignalsBiomedical signal classificationPattern recognition methods for data mining in biosignals

The phonocardiography (PCG) is an important technique for the diagnosis of several heart conditions. However, the PCG signal is highly prone...

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A New Method for Attenuation of Respiration Artifacts in Electrogastrographic (EGG) Signals

Komorowski, Dariusz, Waldemar ;   Tkacz, Ewaryst

Tags Signals and systemsSignal processing in physiological systemsAdaptive filtering

Electrogastrography (EGG) is a test method designed for noninvasive assessment of gastric slow waves propagation. The EGG signal is obtained...

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An Improved Artifact Removal Algorithm for Continuous Cardiac Output and Blood Pressure Recordings

Tronstad, Christian ;   Omenås, Ivar Nagelgaard ;   Rosseland, Leiv Arne

Tags Signal processing in physiological systemsSignals and systems

Measurement artifacts are common in hemodynamic recordings such as cardiac output and blood pressure. Manual artifact removal is cumbersome...

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Analysis of Uterine Activity in Nonpregnant Women by Electrohysterography: A Feasibility Study

Rabotti, Chiara ;   Sammali, Federica ;   Kuijsters, Nienke Pertronella Maria ;   Kortenhorst, Madeleine Susanne Quirine ;   Schoot, Benedictus Christiaan ;   Mischi, Massimo

Tags Signal processing in physiological systemsSignals and systems

With an overall effectiveness below 30%, in vitro fertilization (IVF) is in urgent need for improvements, especially in view of the increasing...

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Automatic Characterization of Sleep Need Dissipation Dynamics using a Single EEG Signal

Garcia-Molina, Gary Nelson ;   Bellesi, Michele ;   Riedner, Brady ;   Pastoor, Sander ;   Pfundtner, Stefan ;   Tononi, Giulio

Tags Signal processing in physiological systemsBiomedical signal classificationPattern recognition methods for data mining in biosignals

In the two-process model of sleep regulation, slow-wave activity (SWA, i.e. the EEG power in the 0.5-4 Hz frequency band) is considered a...

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Breathing Rate Estimation during Sleep using Audio Signal Analysis

Dafna, Eliran ;   Rosenwein, Tal ;   Tarasiuk, Ariel ;   Zigel, Yaniv

Tags Signal processing in physiological systemsMultivariate signal processingTime-frequency analysis of biosignals

Sleep is associated with important changes in respiratory rate and ventilation. Currently, breathing rate (BR) is measured during sleep using...

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Breathing Sounds Characteristics Correlates with Structural Changes of Upper Airway in Obstructive Sleep Apnea

Moussavi, Zahra ;   Elwali, Ahmed Khalil ;   Soltanzadeh, Ramin ;   MacGregor, Cameron Andrew ;   Lithgow, Brian

Tags Signal processing in physiological systemsTime-frequency analysis of biosignals

This paper reports on a pilot study of acoustic properties of respiratory sounds in relation to obstructive sleep apnea (OSA). Data were...

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Comparison of HRV Parameters Derived from Photoplethysmography and Electrocardiography Signals

Jeyhani, Vala ;   Mahdiani, Shadi ;   Peltokangas, Mikko ;   Vehkaoja, Antti

Tags Time-frequency analysis of biosignalsNonlinear analysis of biomedical signals

Heart rate variability (HRV) has become a useful tool in analysis of cardiovascular system in both research and clinical fields. HRV has been...

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Effects of Cuff Inflation and Deflation on Pulse Transit Time Measured from ECG and Multi-Wavelength PPG

Liu, Jing ;   Li, Yao ;   Ding, Xiao-Rong ;   Dai, Wenxuan ;   Zhang, Yuan-Ting

Tags Signal processing in physiological systemsTime-frequency analysis of biosignals

Pulse transit time (PTT), which refers to the time it takes a pulse wave to travel between two arterial sites is a promising index for...

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Heart Rate Calculation from Ensemble Brain Wave using Wavelet and Teager-Kaiser Energy Operator

Jayaraman, Srinivasan ;   V, Adithya

Tags Signal processing in physiological systemsNonstationary processing of biomedical signalsNonlinear synchronization of biomedical signals

Electroencephalogram (EEG) signal artifacts are caused by various factors, such as, Electro-oculogram (EOG), Electromyogram (EMG),...

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Heart Rate Variability in Cyclic Alternating Pattern during Sleep in Healthy and Nocturnal Front Lobe Epilepsy Patients

Dorantes Méndez, Guadalupe ;   Mendez, Martin Oswaldo ;   Alba, Alfonso ;   Gonzalez, Jose Saul ;   Parrino, Liborio ;   Milioli, Giulia

Tags Signal processing in physiological systemsTime-frequency analysis of biosignalsSignals and systems

The aim of this paper is to assess heart rate variability (HRV) during the cyclic alternating pattern, which is a sleep phenomenon, composed...

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Identifying Stable Phase Coupling Associated with Cerebral Autoregulation using the Synchrosqueezed Cross-Wavelet Transform and Low Oscillation Morlet Wavelets

Addison, Paul

Tags Signal processing in physiological systemsTime-scale and waveletsPhase locking estimation in biosignal analysis

A novel method of identifying stable phase coupling behavior of two signals within the wavelet transform time-frequency plane is presented....

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Is 50 Hz High Enough ECG Sampling Frequency for Accurate HRV Analysis?

Mahdiani, Shadi ;   Jeyhani, Vala ;   Peltokangas, Mikko ;   Vehkaoja, Antti

Tags Time-frequency analysis of biosignalsNonlinear analysis of biomedical signalsSignal processing in physiological systems

With the worldwide growth of mobile wireless technologies, healthcare services can be provided at anytime and anywhere. Usage of wearable...

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Modeling Sleep Apnea Severity using Bioimpedance Measurements

Gavrilovic, Bojan ;   Popovic, Milos R. ;   Yadollahi, Azadeh

Tags Signal processing in physiological systemsSignals and systems

Obstructive sleep apnea (OSA) is a common disorder in adults characterized by repetitive collapse of the pharynx. OSA prevalence increases in...

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Multi-Channel Audio-Based Estimation of the Pre-Ejection Period

Paiva, Rui Pedro ;   Sapata, Tiago ;   Henriques, Jorge ;   Quintal, Isabel ;   Baptista, Romeu ;   Gonçalves, Lino ;   de Carvalho, Paulo

Tags Signal processing in physiological systemsSignals and systemsTime-frequency analysis of biosignals

Systolic time intervals (STI) have significant diagnostic and prognostic value to assess the global cardiac function. Presently, STIs are...

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Multi-Sources Data Analysis with Sympatho-Vagal Balance Estimation Toward Early Bruxism Episodes Detection

Kostka, Pawel Stanislaw ;   Tkacz, Ewaryst

Tags Signal processing in physiological systemsNonstationary processing of biomedical signals

Sleep bruxism events detection system is presented, based on integrated, synchronized on-line analysis of EMG signal, heart rave variability...

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Non-Invasive Measurement of Blood Pressure – Why We Should Look at BP Traces Rather than Listen to Korotkoff Sounds

Celler, Branko George ;   Basilakis, Jim ;   Goozee, Kathryn ;   Ambikairajah, E

Tags Signal processing in physiological systemsSignals and systemsBiomedical signal classification

Accurate non-invasive measurement of blood pressure in unsupervised environments continues to be a challenge, particularly in the presence...

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Online Wireless Sleep Analysis and Auditory Sleep Stimulation

Virkkala, Jussi ;   Leminen, Miika ;   Saure, Emma ;   Huotilainen, Minna ;   Paunio, Tiina

Tags Signal processing in physiological systemsClosed loop systems in physiological systems

We have developed an online wireless sleep analysis and auditory sleep stimulation setup. Sound stimulation synchronization was evaluated with...

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QRS Complex Detection in ECG Signal for Wearable Devices

Arefin, M. Riadh ;   Tavakolian, Kouhyar ;   Fazel-Rezai, Reza

Tags Signal processing in physiological systems

This paper presents QRS complex detection algorithm based on dual slope technique, which is suitable for wearable electrocardiogram (ECG)...

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Quantification of Muscle Activity during Sleep for Patients with Neurodegenerative Diseases

Hanif, Umaer ;   Trap, Lotte ;   Jennum, Poul ;   Zoetmulder, Marielle ;   Sorensen, Helge B D

Tags Signal processing in physiological systemsParametric filtering and estimationTime-frequency analysis of biosignals

Idiopathic REM sleep Behavior Disorder (iRBD) is a very strong predictor for later development of Parkinson’s Disease (PD), and is...

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Rapid and Stable Measurement of Respiratory Rate from Doppler Radar Signals using Time Domain Autocorrelation Model

Sun, Guanghao ;   Matsui, Takemi

Tags Signal processing in physiological systemsTime-frequency analysis of biosignalsSignals and systems

Noncontact measurement of respiratory rate using Doppler radar will play a vital role in future clinical practice. Doppler radar remotely...

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Real-Time Feedback based Control of Cardiac Restitution using Optical Mapping

Kulkarni, Kanchan ;   Tolkacheva, Elena

Tags Closed loop systems in physiological systemsSignal processing in physiological systems

Cardiac restitution is the shortening of the action potential duration with an increase in the heart rate. A shorter action potential duration...

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Real-Time Obstructive Sleep Apnea Detection from Frequency Analysis of EDR and HRV using Lomb Periodogram

Fan, Shu-Han ;   Chou, Chia-Ching ;   Chen, Wei-Chen ;   Fang, Wai-Chi

Tags Biomedical simulation involving signal processingTime-frequency analysis of biosignalsSignal processing in physiological systems

In this study, an effective real-time obstructive sleep apnea (OSA) detection method from frequency analysis of ECG-derived respiratory...

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Recording System and Data Fusion Algorithm for Enhancing the Estimation of the Respiratory Rate from Photoplethysmogram

Cernat, Roxana Alexandra ;   Ciorecan, Silvia Ionela ;   Ungureanu, Constantin ;   Arends, Johan B.A.M. ;   Strungaru, Rodica ;   Ungureanu, G. Mihaela

Tags Signal processing in physiological systemsBiomedical simulation involving signal processingSignals and systems

The respiratory rate is a vital parameter that can provide valuable information about the health condition of a patient. The extraction of...

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Stream Computing for Biomedical Signal Processing: A QRS Complex Detection Case-Study

Murphy, Brian Michael ;   O'Driscoll, Cillian ;   Boylan, Geraldine ;   Lightbody, Gordon ;   Marnane, Liam

Tags Signal processing in physiological systemsSignals and systems

Recent developments in ``Big Data’’ have brought significant gains in the ability to process large amounts of data on commodity server...

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