Now showing items 1-20 of 60

  • A comprehensive model for power line interference in biopotential measurements 

    Fernández Chimeno, Mireya; Pallàs Areny, Ramon (Institute of Electrical and Electronics Engineers, 2000-06-30)
    Article
    Open Access
    Power 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 ...
  • Acute sleep deprivation induces a local brain transfer information increase in the frontal cortex in a widespread decrease context 

    Alonso López, Joan Francesc; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel; Alcalá Álvarez, Marta; Antonijoan, Rosa Maria; Giménez Badia, Sandra (2016-04-01)
    Article
    Open Access
    Sleep 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 

    Serres Altés, Víctor (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 ...
  • A methodology to quantify the differences between alternative methods of heart rate variability measurement 

    García González, Miguel Ángel; Fernández Chimeno, Mireya; Guede Fernández, Federico; Ferrer Mileo, Víctor; Argelagós Palou, Ariadna; Álvarez Gómez, Laura; Parrado Romero, Eva; Moreno Sánchez, Jordi; Capdevila, Lluis; Ramos Castro, Juan José (Institute of Physics (IOP), 2015-12-14)
    Article
    Open Access
    This 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 ...
  • Analysis of a cardiovascular model for the study of the autonomic response of Brugada syndrome patients 

    Calvo González, Mireia; Le Rolle, Virginie; Romero Pérez, Daniel; Béhar, Nathalie; Gomis Román, Pedro; Mabo, Philippe; Hernández, Alfredo I. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    This 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 

    Arizmendi Pereira, Carlos Julio; Solano, E.H.; Gonzalez, H.; González Acuña, Hernan; Giraldo Giraldo, Beatriz (2018)
    Conference report
    Restricted access - publisher's policy
    The 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 

    Gomis Román, Pedro; Guasch, Eduard; Perera Lluna, Alexandre; Mont Girbau, Lluis; Caminal, Pere (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    The 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 

    Tellez Gabriel, Juan Pablo; Herrera, Sergio; Benito Vales, Salvador; Giraldo Giraldo, Beatriz (2014)
    Conference report
    Restricted access - publisher's policy
    Due 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 ...
  • An improved buffer for bioelectric signals 

    Pallàs Areny, Ramon; Colominas i Balagué, Josep; Rosell Ferrer, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1989-04-01)
    Article
    Open Access
    We 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 ...
  • A novel artifact reconstruction method applied to blood pressure signals 

    Rodríguez Benítez, Javier; Giraldo Giraldo, Beatriz (2018)
    Conference report
    Open Access
  • A Novel Assist-as-Needed Controller for Locomotion Training in the fMRI 

    Gómez-Lor López, Isaac (Universitat Politècnica de Catalunya / Eidegenössische Technische Hochschule Zürich, 2011)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    In 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. ...
  • Assessment of responsiveness levels during sedation-analgesia by entropy analysis of EEG 

    Valencia, Jose Fernando; Melia, Umberto; Vallverdú Ferrer, Montserrat; Jospin, Mathieu; Jensen, Erik Weber; Porta, Alberto; Gambus, Pedro L.; Caminal Magrans, Pere (2016-03-18)
    Article
    Open Access
    The 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 

    Muñoz Gayet, Joan (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 ...
  • Caracterización de electrodos textiles en sensores integrados en ropa deportiva 

    Ortuño López, Aurora de la Concepción (Universitat Politècnica de Catalunya, 2018-01)
    Bachelor thesis
    Open Access
    The 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 

    Riveras Torres, Jose; Calvo, Conrado J.; Llach, Anna; Gúzman Martínez, Gabriela; Caballero, Ricardo; González Gómez, Cristina; Jiménez Borreguero, Luís J.; Guadix, Juan A.; Osorio, Fernando G.; López Otín, Carlos; Herraiz Martínez, Adela; Cabello, Nuria; Vallmitjana Lees, Alexander; Benítez Iglesias, Raúl; Gordon, Leslie B. (2016-11-15)
    Article
    Open Access
    Hutchinson–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 

    Solà Soler, Jordi; Cuadros, Alba; Giraldo Giraldo, Beatriz (2018)
    Conference report
    Open Access
    Several 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 

    Puiggalí Jou, Anna; Valle Mendoza, Luis Javier del; Alemán Llansó, Carlos (Multidisciplinary Digital Publishing Institute (MDPI), 2019-08-01)
    Article
    Open Access
    Electrical 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 ...
  • Characterization of laplacian surface electromyographic signals during isometric contraction in biceps brachii 

    Estrada, Luis; Torres Cebrián, Abel; Garcia Casado, Javier; Prats Boluda, Gema; Jané Campos, Raimon (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    Surface electromyography (sEMG) is a noninvasive technique for monitoring the electrical activity produced by the muscles. Usually, sEMG is performed by carrying out monopolar or bipolar recordings by means of conventional ...
  • Characterization of the microvascular cerebral blood flow response to obstructive apneic events during night sleep 

    Zirak, Peyman; Gregori Pla, Clara; Blanco, Igor; Solà Soler, Jordi; Giraldo Giraldo, Beatriz (2018-10-01)
    Article
    Open Access
  • Classification of hydration in clinical conditions: indirect and direct approaches using bioimpedance 

    Lukaski, Henry; Vega Diaz, Nicanor; Talluri, Antonio; Nescolarde Selva, Lexa Digna (2019-04-10)
    Article
    Open Access