Browsing by Subject "Medical electronics"
Now showing items 1-20 of 104
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A comprehensive model for power line interference in biopotential measurements
(Institute of Electrical and Electronics Engineers, 2000-06-30)
Article
Open AccessPower line interference is a major problem in high-resolution biopotential measurements. Because interference coupling is mostly capacitive, shielding electrode leads and a high common-mode rejection ratio (CMRR) are ... -
A methodology to quantify the differences between alternative methods of heart rate variability measurement
(Institute of Physics (IOP), 2015-12-14)
Article
Open AccessThis work proposes a systematic procedure to report the differences between heart rate variability time series obtained from alternative measurements reporting the spread and mean of the differences as well as the agreement ... -
A novel artifact reconstruction method applied to blood pressure signals
(2018)
Conference report
Open Access -
A Novel Assist-as-Needed Controller for Locomotion Training in the fMRI
(Universitat Politècnica de Catalunya / Eidegenössische Technische Hochschule Zürich, 2011)
Master thesis (pre-Bologna period)
Restricted access - author's decisionIn this thesis it is explained the work done in order to develop a patient-cooperative control that assists only as it is needed for the MR-compatible stepper (MARCOS) developed at the Sensory Motor System Lab of ETH Zürich. ... -
A novel wearable insole BCG as a surrogate of the standard vertical weighing scale BCG
(Computing in Cardiology, 2023)
Conference lecture
Open AccessThis work presents a new wearable system based on a piezoelectric sensor embedded in a shoe insole to obtain the ballistocardiogram (BCG). The vertical BCG can be related to relevant cardiovascular parameters such as aortic ... -
Acute sleep deprivation induces a local brain transfer information increase in the frontal cortex in a widespread decrease context
(2016-04-01)
Article
Open AccessSleep deprivation (SD) has adverse effects on mental and physical health, affecting the cognitive abilities and emotional states. Specifically, cognitive functions and alertness are known to decrease after SD. The aim of ... -
AD5933-based system for transthoracic impedance measurements
(Universitat Politècnica de Catalunya / University of Borås, 2012-08-31)
Master thesis (pre-Bologna period)
Open Access
Covenantee: Blekinge Institute of Technology / Högskolan i Borås[ANGLÈS] Electrical Bioimpedance (EBI) through transthoracic measurements offers a non-invasive manner to measure hemodynamic values. In the last decades, advances in the field of electrodes, electronic hardware and the ... -
Advanced Control of Electronic Wheelchairs to Enhance Mobility for Individuals with Cerebral Palsy
(Universitat Politècnica de Catalunya, 2024-07-08)
Bachelor thesis
Open AccessCerebral Palsy (CP) is a neurological condition that can affect muscle movement, coordination, stability, vision, voice and hearing in individuals. People with disabilities face daily challenges, one of the most significant ... -
Agreement between two photoplethysmography-based wearable devices for monitoring heart rate during different physical activity situations: a new analysis methodology
(Nature, 2022-09-14)
Article
Open AccessWearables are being increasingly used to monitor heart rate (HR). However, their usefulness for analyzing continuous HR in research or at clinical level is questionable. The aim of this study is to analyze the level of ... -
An improved buffer for bioelectric signals
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1989-04-01)
Article
Open AccessWe propose an AC-coupled amplifier that offers a high in-put impedance, thus making it suitable for bioelectric signal amplifi- cation. We also present the necessary formulas for calculating its input impedance and transfer ... -
An improved estimation of unsuitable segments of ballistocardiography records using wavelet transforms
(Computing in Cardiology, 2023)
Conference report
Restricted access - publisher's policyA major challenge in BCG measurements is their high sensitivity to motion artifacts, which degrade the signal quality. Several techniques have been developed, especially for BCG measurements during sleep, to automatically ... -
Analysis and optimization of the spectral density array parameters in a depth of anesthesia monitoring device
(Universitat Politècnica de Catalunya, 2024-01-26)
Bachelor thesis
Restricted access - confidentiality agreement
Covenantee: Quantium MedicalAquesta tesi realitza una recerca exhaustiva sobre els paràmetres de densitat espectral (DSA) en dispositius de monitoratge de la profunditat anestèsica (DoA), posant l’accent en la seva aplicació en el dispositiu de ... -
Analysis of a cardiovascular model for the study of the autonomic response of Brugada syndrome patients
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyThis paper describes the integration of mathematical models of the cardiac electrical activity, the cardiovascular system and the baroreceptor reflex control of the autonomic nervous system, with a model representing a ... -
Analysis of cardiorespiratory interaction in patients submitted to the T-tube test in the weaning process implementing symbolic dynamics and neural networks
(2018)
Conference report
Restricted access - publisher's policyThe determination of the optimal time of the patients in weaning trial process from Mechanical Ventilation (MV), between patients capable of maintaining spontaneous breathing and patients that fail to maintain spontaneous ... -
Analysis of ECG in athletes running in mountain route conditions
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference report
Open AccessThe purpose of this work is to analyse changes in ECG and heart rate variability (HRV) metrics in athletes during 10 km running in mountain route conditions. Eighteen healthy athletes carrying a 12-lead ECG GE Holter ... -
Analysis of the breathing pattern in elderly patients using the Hurst exponent applied to the respiratory flow signal
(2014)
Conference report
Restricted access - publisher's policyDue to the increasing elderly population and the extensive number of comorbidities that affect them, studies are required to determine future increments in admission to emergency departments. Some of these studies could ... -
Analysis of the cardiorespiratory pattern of patients undergoing weaning using artificial intelligence
(2023-03-01)
Article
Open AccessThe optimal extubating moment is still a challenge in clinical practice. Respiratory pattern variability analysis in patients assisted through mechanical ventilation to identify this optimal moment could contribute to this ... -
Analysis of the effect of deviated modulating signal characteristics on the susceptibility of a small medical device
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Restricted access - publisher's policyA variety of modulation techniques using various signal characteristics are used by the telecommunication industry in real-life applications. Despite this, the radiated immunity test based on the IEC 61000-4-3 only modulates ... -
Analysis of time delay between bioimpedance and respiratory volume signals under inspiratory loaded breathing
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference lecture
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 ...
