Exploració per autor "Vallverdú Ferrer, Montserrat"
Ara es mostren els items 21-40 de 66
-
Detection of transcription factor binding sites using Rényi entropy
Maynou Fernández, Joan; Vallverdú Ferrer, Montserrat; Clarià, Francesc; Perera Lluna, Alexandre; Caminal Magrans, Pere (IEEE Press. Institute of Electrical and Electronics Engineers, 2008)
Text en actes de congrés
Accés obertDuring the process of protein synthesis, transcription of DNA to messenger RNA starts with the binding of the transcription factors to the promoter. One of the issues on the prediction of transcription factor binding is ... -
Detrended fluctuation analysis of heart rate by means of symbolic series
Valencia Murillo, José Fernando; Vallverdú Ferrer, Montserrat; Schroeder, Rico; Voss, Andreas; Cygankiewicz, I.; Vazquez, R.; Bayes de Luna, Antonio; Caminal Magrans, Pere (2010)
Text en actes de congrés
Accés obertDetrended fluctuation analysis (DFA) has been shown to be a useful tool for diagnosis of patients with cardiac diseases. The scaling exponents obtained with DFA are an indicator of power-law correlations in signal ... -
Dimensionality reduction oriented toward the feature visualization for ischemia detection
Delgado-Tejos, Edilson; Perera Lluna, Alexandre; Vallverdú Ferrer, Montserrat; Caminal Magrans, Pere; Castellanos Dominguez, German (2009-03-16)
Article
Accés obertAn effective data representation methodology on high-dimension feature spaces is presented, which allows a better interpretation of subjacent physiological phenomena (namely, cardiac behavior related to cardiovascular ... -
Entropy measures as descriptors to identify apneas in rheoencephalographic signals
González Pijuán, Carmen; Jensen, Erik Weber; Gambus, Pedro L.; Vallverdú Ferrer, Montserrat (2019-06-18)
Article
Accés obertRheoencephalography (REG) is a simple and inexpensive technique that intends to monitor cerebral blood flow (CBF), but its ability to reflect CBF changes has not been extensively proved. Based on the hypothesis that ... -
Evaluación de Modelos Ocultos de Markov y Dinámica Simbólica de la HRV:Pacientes con Cardiomiopatia Isquemica
Palacios Muñoz, Manuel; Vallverdú Ferrer, Montserrat (2011-03-02)
Report de recerca
Accés restringit per acord de confidencialitatEn este trabajo se presenta la descripción de la técnica no lineal de la dinámica simbólica, que transforma una serie de tiempo en un conjunto de observaciones, y se desarrolla una nueva metodología de análisis de la ... -
Evaluation of acceleration and deceleration cardiac processes using phase-rectified signal averaging in healthy and idiopathic dilated cardiomyopathy subjects
Bas, Rosana; Vallverdú Ferrer, Montserrat; Valencia, Jose F.; Voss, Andreas; Bayes de Luna, Antonio; Caminal Magrans, Pere (2015-02-01)
Article
Accés obertThe aim of the present study was to investigate the suitability of the Phase-Rectified Signal Averaging (PRSA) method for improved risk prediction in cardiac patients. Moreover, this technique, which separately evaluates ... -
Exons and introns characterization in nucleic acid sequences by time-frequency analysis
Melia, Umberto Sergio Pio; Clarià Sancho, Francesc; Gallardo Chacón, Joan Josep; Caminal Magrans, Pere; Perera Lluna, Alexandre; Vallverdú Ferrer, Montserrat (2010)
Comunicació de congrés
Accés obertA current problem in deoxyribonucleic acid (DNA) sequence analysis is to determine the exact locations of the genes and also in eukaryotes, the protein-coding regions in the mRNA primary transcript (pre-mRNA).The conversion ... -
Extraction of the respiration signal from the electrocardiogram
Valderas Yamuza, Maria Teresa; Vallverdú Ferrer, Montserrat; Caminal Magrans, Pere; Schröder, Rico; Voss, Andreas (2015)
Text en actes de congrés
Accés obert -
Filtering and thresholding the analytic signal envelope in order to improve peak and spike noise reduction in EEG signals
Melia, Umberto Sergio Pio; Clarià Sancho, Francesc; Vallverdú Ferrer, Montserrat; Caminal Magrans, Pere (2014-04-01)
Article
Accés obertTo remove peak and spike artifacts in biological time series has represented a hard challenge in the last decades. Several methods have been implemented mainly based on adaptive filtering in order to solve this problem. ... -
Generación de bioseñales sintéticas mediante series de Fourier variantes en tiempo
Escrivá, Jesús; Galea Cazorla, A.; González Pijuán, Carmen; Vallverdú Ferrer, Montserrat; Caminal Magrans, Pere; Jensen, Erik Weber (Comité Español de Automática (CEA-IFAC), 2016)
Comunicació de congrés
Accés restringit per política de l'editorialLa selección de la técnica más adecuada para el análisis de una señal tiempo-frecuencia depende en gran medida de la propia naturaleza de la señal objeto de análisis. Para ello, resulta adecuado utilizar señales sintéticas ... -
Heart rate variability characterized by refined multiscale entropy applied to cardiac death in ischemic cardiomyopathy patients
Caminal Magrans, Pere; Valencia Murillo, José Fernando; Vallverdú Ferrer, Montserrat; Schroeder, Rico; Cygankiewicz, I.; Vázquez, Rafael; Bayes de Luna, Antonio; Porta, Alberto; Voss, Andreas (2010)
Comunicació de congrés
Accés restringit per política de l'editorialIn this work, Refined Multiscale Entropy (RMSE) was applied to characterize risk of cardiac death in ischemic cardiomyopathy patients, analyzing heart rate variability (HRV) by means of RR series during daytime and ... -
Heart rate variability in ultra-trail runners
Melia, Umberto; Vallverdú Ferrer, Montserrat; Roca, Emma; Brotons, Daniel; Irurtia Amigo, Alfredo; Cadefau, Joan; Caminal Magrans, Pere; Perera Lluna, Alexandre (2014)
Text en actes de congrés
Accés obert -
Human emotion characterization by heart rate variability analysis guided by respiration
Valderas Yamuza, Maria Teresa; Bolea, Juan; Orini, M; Laguna Lasaosa, Pablo; Vallverdú Ferrer, Montserrat; Bailón Luesma, Raquel (2019-01-28)
Article
Accés obertDeveloping a tool which identifies emotions based on their effect on cardiac activity may have a potential impact on clinical practice, since it may help in the diagnosing of psycho-neural illnesses. In this study, a method ... -
Human emotion recognition using heart rate variability analysis with spectral bands based on respiration
Valderas Yamuza, Maria Teresa; Bolea, Juan; Laguna, Pablo; Vallverdú Ferrer, Montserrat; Bailón, Raquel (2015)
Comunicació de congrés
Accés obert -
Identificación de un modelo del control nervioso del sistema cardiovascular utilizando modelos NARMAX
Vallverdú Ferrer, Montserrat; Korenberg, M.J.; Caminal Magrans, Pere (1992)
Comunicació de congrés
Accés obert -
Interaction between EEG and drug concentration to predict response to noxious stimulation during sedation-analgesia : effect of the A118G genetic polymorphism
Melia, Umberto Sergio Pio; Vallverdú Ferrer, Montserrat; Jospin, Mathieu; Valencia, Jose F.; Jensen, Erik Weber; Gambus, Pedro L.; Perera Lluna, Alexandre; Caminal Magrans, Pere (2014)
Text en actes de congrés
Accés restringit per política de l'editorialThe level of sedation in patients undergoing medical procedures is affected by the interaction between the effect of the anesthetic and analgesic agents and the pain stimuli. The presence of the A118G single nucleotide ... -
La enseñanza de la Bioingeniería en los estudios de tercer ciclo en la Universidad Politécnica Cataluña
Caminal Magrans, Pere; Jané Campos, Raimon; Laguna Lasaosa, Pablo; Vallverdú Ferrer, Montserrat (1989)
Text en actes de congrés
Accés restringit per política de l'editorial -
Measuring heart rate variability by means of information entropies based on Choi-Williams distribution
Vallverdú Ferrer, Montserrat; Clarià Sancho, Francesc; Melia, Umberto; Bayes de Luna, Antonio; Caminal Magrans, Pere (Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés obert -
Measuring instantaneous and spectral information entropies by shannon entropy of choi-williams distribution in the context of electroencephalography
Melia, Umberto Sergio Pio; Clarià Sancho, Francesc; Vallverdú Ferrer, Montserrat; Caminal Magrans, Pere (2014-05-01)
Article
Accés obertThe theory of Shannon entropy was applied to the Choi-Williams time-frequency distribution (CWD) of time series in order to extract entropy information in both time and frequency domains. In this way, four novel indexes ... -
Medición de la variabilidad del ritmo cardíaco, la impedancia de la piel y el EEG para la cuantificación del dolor
Carbonell, Claudia; González Pijuán, Carmen; Jensen, Erik Weber; Vallverdú Ferrer, Montserrat (2017)
Comunicació de congrés
Accés restringit per política de l'editorialEn la actualidad, la monitorización del dolor es un tema muy investigado. La preocupación del paciente en todas las áreas de la salud siempre es la misma, ¿me dolerá? El dolor es una sensación completamente subjetiva y ...