Exploració per tema "Biomedical signal processing"
Ara es mostren els items 1-14 de 14
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An accurate and real-time method for resolving superimposed action potentials in multiunit recordings
(2023-01)
Article
Accés restringit per política de l'editorialObjective : Spike sorting of muscular and neural recordings requires separating action potentials that overlap in time (superimposed action potentials (APs)). We propose a new algorithm for resolving superimposed action ... -
Analysis of Smartphone Triaxial Accelerometry for Monitoring Sleep-Disordered Breathing and Sleep Position at Home
(Institute of Electrical and Electronics Engineers (IEEE), 2020-04-13)
Article
Accés obertObstructive sleep apnea (OSA) is a sleep disorder in which repetitive upper airway obstructive events occur during sleep. These events can induce hypoxia, which is a risk factor for multiple cardiovascular and cerebrovascular ... -
Automatic event detector from smartphone accelerometry: Pilot mHealth study for obstructive sleep apnea monitoring at home
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Comunicació de congrés
Accés obertObstructive sleep apnea (OSA) is a common disorder with a low diagnosis ratio, leaving many patients undiagnosed and untreated. In the last decades, accelerometry has been found to be a feasible solution to obtain respiratory ... -
Automatic silence events detector from smartphone audio signals: a pilot mHealth system for sleep apnea monitoring at home
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Comunicació de congrés
Accés obertObstructive sleep apnea (OSA) is a prevalent disease, but most patients remain undiagnosed and untreated. Recently, mHealth tools are being proposed to screen OSA patients at home. In this work, we analyzed full-night audio ... -
Characterization of daytime sleepiness by time-frequency measures of EEG signals
(2015-06-01)
Article
Accés obertExcessive daytime sleepiness (EDS) is one of the main symptoms of several sleep-related disorders with a great impact on patient lives. While many studies have been carried out in order to assess daytime sleepiness, automatic ... -
Detection of sleep-disordered breathing in patients with spinal cord injury using a smartphone
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-10-29)
Article
Accés obertPatients with spinal cord injury (SCI) have an increased risk of sleep-disordered breathing (SDB), which can lead to serious comorbidities and impact patients’ recovery and quality of life. However, sleep tests are rarely ... -
Enhanced monitoring of sleep position in sleep apnea patients: smartphone triaxial accelerometry compared with video-validated position from polysomnography
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-26)
Article
Accés obertPoor sleep quality is a risk factor for multiple mental, cardiovascular, and cerebrovascular diseases. Certain sleep positions or excessive position changes can be related to some diseases and poor sleep quality. Nevertheless, ... -
Entropy analysis of acoustic signals recorded with a smartphone for detecting apneas and hypopneas: A comparison with a commercial system for home sleep apnea diagnosis
(Institute of Electrical and Electronics Engineers (IEEE), 2019-01-01)
Article
Accés obertObstructive sleep apnea (OSA) is a prevalent disease, but most patients remain undiagnosed and untreated. Here we propose analyzing smartphone audio signals for screening OSA patients at home. Our objectives were to: (1) ... -
Filtering and thresholding the analytic signal envelope in order to improve peak and spike noise reduction in EEG signals
(2014-04-01)
Article
Accés obertTo remove peak and spike artifacts in biological time series has represented a hard challenge in the last decades. Several methods have been implemented mainly based on adaptive filtering in order to solve this problem. ... -
Implementation of a low cost prototype for electrical impedance tomography based on the integrated circuit for body composition measurement AFE4300
(Scitepress, 2018)
Text en actes de congrés
Accés obertElectrical impedance tomography (EIT) is a technique of image reconstruction of the electrical conductivity distribution in a tissue or region under observation. An electrical system for EIT comprises complex hardware and ... -
Multilevel analysis of calcium dynamics in stimulated cultures of cardiomyocytes
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialWe present an automatic method to characterize calcium activity in a culture of cardiac cells from a sequence of microscopy fluorescence images. The approach quantifies both the response of each individual cell in the ... -
Mutual information measures applied to EEG signals for sleepiness characterization
(2015-03-01)
Article
Accés obertExcessive daytime sleepiness (EDS) is one of the main symptoms of several sleep related disorders with a great impact on the patient lives. While many studies have been carried out in order to assess daytime sleepiness, ... -
Onset detection to study muscle activity in reaching and grasping movements in rats
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Comunicació de congrés
Accés obertEMG signals reflect the neuromuscular activation patterns related to the execution of a certain movement or task. In this work, we focus on reaching and grasping (R&G) movements in rats. Our objective is to develop an ... -
Time Invariant Multichannel Averaging for ECG Signals
(Universitat Politècnica de Catalunya, 2013-02-28)
Projecte/Treball Final de Carrera
Accés obert
Realitzat a/amb: Northeastern University[ANGLÈS] One of the biggest challenges in averaging ECG or EEG signals is to overcome temporal misalignments and distortions, due to uncertain timing or complex non-stationary dynamics. Standard methods average individual ...