Browsing by Subject "Medical electronics"
Now showing items 1-20 of 82
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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. ... -
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 ... -
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 ... -
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 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 ... -
Assessment of responsiveness levels during sedation-analgesia by entropy analysis of EEG
(2016-03-18)
Article
Open AccessThe level of sedation in patients undergoing medical procedures is decided to assure unconsciousness and prevent pain. The monitors of depth of anesthesia, based on the analysis of the electroencephalogram (EEG), have been ... -
Banda inalàmbrica que mesura l'ectrecardiograma i la respiració
(Universitat Politècnica de Catalunya, 2013-12-10)
Bachelor thesis
Open Access[ANGLÈS] The objective of this project is to create a device able to monitor at the same time the respiration and the electrocardiography (ECG) of a patient in ambulatory situations. From these signals, several data can ... -
Beta-blocker treatment of patients with atrial fibrillation attenuates spontaneous calcium release-induced electrical activity
(Elsevier, 2023-02-01)
Article
Open AccessAims Atrial fibrillation (AF) has been associated with excessive spontaneous calcium release, linked to cyclic AMP (cAMP)-dependent phosphorylation of calcium regulatory proteins. Because ß-blockers are expected to ... -
Caracterización de electrodos textiles en sensores integrados en ropa deportiva
(Universitat Politècnica de Catalunya, 2018-01)
Bachelor thesis
Open AccessThe purpose of this project is to use electrodes with textile technology to measure an electrocardiogram (ECG) signal during physical activity. During intense exercise, changes in the heart rate (it is increased) and ... -
Cardiac electrical defects in progeroid mice and Hutchinson-Gilford progeria syndrome patients with nuclear lamina alterations
(2016-11-15)
Article
Open AccessHutchinson–Gilford progeria syndrome (HGPS) is a rare genetic disease caused by defective prelamin A processing, leading to nuclear lamina alterations, severe cardiovascular pathology, and premature death. Prelamin A ... -
Cardiorespiratory phase synchronization increases during certain mental stimuli in healthy subjects
(2018)
Conference report
Open AccessSeveral neurological and mechanical non-linear mechanisms relate the respiratory and cardiovascular systems to one another. Besides the well-known modulation of heart rate by respiration, another form of non-linear interaction ... -
Cell responses to electrical pulse stimulation for anticancer drug release
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-08-01)
Article
Open AccessElectrical stimulation is an attractive approach to tune on-demand drug release in the body as it relies on simple setups and requires typically 1 V or less. Although many studies have been focused on the development of ...
