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Combining bioimpedance and myographic signals for the assessment of COPD during loaded breathing
(2020-05-27)
Article
Open AccessChronic Obstructive Pulmonary Disease (COPD) is one of the most common chronic conditions. The current assessment of COPD requires a maximal maneuver during a spirometry test to quantify airflow limitations of patients. ... -
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
Open AccessObstructive 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 ... -
Identifying muscle synergies from reaching and grasping movements in rats
(Institute of Electrical and Electronics Engineers (IEEE), 2020-01-01)
Article
Open AccessReaching and grasping (R&G) is a skilled voluntary movement which is critical for animals. In this work, we aim to identify muscle synergy patterns from R&G movements in rats and show how these patterns can be used to ... -
Evaluation of a wearable device to determine cardiorespiratory parameters from surface diaphragm electromyography
(2019)
Article
Open AccessUsing wearable devices in clinical routines could reduce healthcare costs and improve the quality of assessment in patients with chronic respiratory diseases. The purpose of this study is to evaluate the capability of a ... -
Noninvasive assessment of inspiratory muscle neuromechanical coupling during inspiratory threshold loading
(Institute of Electrical and Electronics Engineers (IEEE), 2019-12-16)
Article
Open AccessDiaphragm neuromechanical coupling (NMC), which reflects the efficiency of conversion of neural activation to transdiaphragmatic pressure (Pdi), is increasingly recognized to be a useful clinical index of diaphragm function ... -
Performance evaluation of fixed sample entropy in myographic signals for inspiratory muscle activity estimation
(2019-02-01)
Article
Open AccessFixed sample entropy (fSampEn) has been successfully applied to myographic signals for inspiratory muscle activity estimation, attenuating interference from cardiac activity. However, several values have been suggested for ... -
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
Open AccessObstructive 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) ... -
Acoustic analysis of snoring sound in patients with simple snoring and obstructive sleep apnoea
(1996-11-09)
Article
Open AccessSnoring, a symptom which may indicate the presence of the obstructive sleep apnoea syndrome (OSA), is also common in the general population. Recent studies have suggested that the acoustic characteristics of snoring sound ... -
Chest movement and respiratory volume both contribute to thoracic bioimpedance during loaded breathing
(Nature, 2019-12-27)
Article
Open AccessBioimpedance has been widely studied as alternative to respiratory monitoring methods because of its linear relationship with respiratory volume during normal breathing. However, other body tissues and fluids contribute ... -
Wearable bioimpedance measurement for respiratory monitoring during inspiratory loading
(Institute of Electrical and Electronics Engineers (IEEE), 2019-07-05)
Article
Open AccessBioimpedance is an unobtrusive noninvasive technique to measure respiration and has a linear relation with volume during normal breathing. The objective of this paper was to assess this linear relation during inspiratory ... -
A 36 µW 1.1 mm2 reconfigurable analog front-end for cardiovascular and respiratory signals recording
(2018-04-06)
Article
Open AccessThis paper presents a 1.2 V 36 µW reconfigurable analog front-end (R-AFE) as a general-purpose low-cost IC for multiple-mode biomedical signals acquisition. The R-AFE efficiently reuses a reconfigurable preamplifier, a ... -
Analysis of time delay between bioimpedance and respiratory volume signals under inspiratory loaded breathing
(Institute of Electrical and Electronics Engineers (IEEE), 2019-10-07)
Article
Open AccessBioimpedance is known for its linear relation with volume during normal breathing. For that reason, bioimpedance can be used as a noninvasive and comfortable technique for measuring respiration. The goal of this study is ...
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