Now showing items 1-20 of 68

    • 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 ...
    • 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 ...
    • 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. ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Analysis of time delay between bioimpedance and respiratory volume signals under inspiratory loaded breathing 

      Blanco Almazán, María Dolores; Groenendaal, Willemijn; Catthoor, Francky; Jané Campos, Raimon (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference lecture
      Open Access
      Bioimpedance 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 

      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