Now showing items 1-20 of 43

    • A novel spatial feature for the identification of motor tasks using high-density electromyography 

      Jordanic, Mislav; Rojas Martínez, Mónica; Mañanas Villanueva, Miguel Ángel; Alonso López, Joan Francesc; Marateb, Hamid Reza (MDPI AG, 2017-07-08)
      Article
      Open Access
      Estimation of neuromuscular intention using electromyography (EMG) and pattern recognition is still an open problem. One of the reasons is that the pattern-recognition approach is greatly influenced by temporal changes in ...
    • 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 ...
    • Alterations in EEG connectivity in healthy young adults provide an indicator of sleep depth 

      Migliorelli Falcone, Carolina Mercedes; Bachiller Matarranz, Alejandro; Andrade, Andreia G.; Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Borja Mallach, Cristina; Romero Lafuente, Sergio (2019-06-11)
      Article
      Open Access
      Current sleep analyses have used electroencephalography (EEG) to establish sleep intensity through linear and nonlinear measures. Slow wave activity (SWA) and entropy are the most commonly used markers of sleep depth. The ...
    • Analysis of muscle load-sharing in patients with lateral epicondylitis during endurance isokinetic contractions using non-linear prediction 

      Rojas Martínez, Mónica; Alonso López, Joan Francesc; Jordanic, Mislav; Mañanas Villanueva, Miguel Ángel; Chaler Vilaseca, Joaquim Lluís (2019-09-24)
      Article
      Open Access
      The aim of this paper is to analyze muscle load-sharing in patients with Lateral Epicondylitis during dynamic endurance contractions by means of non-linear prediction of surface EMG signals. The proposed non-linear ...
    • Aplicación de la entropía condicional para el análisis del EEG bajo terapia farmacológica 

      Alonso López, Joan Francesc; Martínez Vera, Naira Pilar; Mañanas Villanueva, Miguel Ángel; Romero Lafuente, Sergio; Barbanoj, Manel J. (CEA, 2009)
      Conference lecture
      Restricted access - publisher's policy
      El análisis del electroencefalograma humano constituye una herramienta muy útil para la evaluación de la biodisponibilidad de un fármaco en el cerebro. Se ha aplicado el calculo de entropía condicional a señales ...
    • Assessment of the pharmacological effects of alprazolam on electroencephalography using connectivity indexes not affected by volume conduction 

      Alonso López, Joan Francesc; Sabater Camps, Aitana; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel; Riba Serrano, Jordi (2015)
      Conference lecture
      Open Access
      Electroencephalographic analysis techniques have become a very useful tool to assess brain activity and interactions between cerebral regions, that is, the so-called cerebral connectivity analysis. The effects of some drugs ...
    • Assessment of weaning indexes based on diaphragm activity in mechanically ventilated subjects after cardiovascular surgery. A pilot study 

      Muñoz Ortega, Isabel Cristina; Hernández Valdivieso, Alher Mauricio; Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Atehortua López, Luis Horacio (2017-06)
      Article
      Open Access
      OBJECTIVE: The aim of this pilot study was to evaluate the feasibility of surface electromyographic signal derived indexes for the prediction of weaning outcomes among mechanically ventilated subjects after cardiac surgery. ...
    • Auditory P3a and P3b neural generators in schizophrenia: An adaptive sLORETA P300 localization approach 

      Bachiller Matarranz, Alejandro; Romero Lafuente, Sergio; Molina, Vicente; Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Poza Crespo, Jesús; Hornero Sánchez, Roberto (2015-12)
      Article
      Open Access
      The present study investigates the neural substrates underlying cognitive processing in schizophrenia (Sz) patients. To this end, an auditory 3-stimulus oddball paradigm was used to identify P3a and P3b components, elicited ...
    • Automated detection of epileptic ripples in MEG using beamformer-based virtual sensors 

      Migliorelli Falcone, Carolina Mercedes; Alonso López, Joan Francesc; Romero Lafuente, Sergio; Nowak, Rafal; Russi Tintoré, Antonio; Mañanas Villanueva, Miguel Ángel (2017-08-01)
      Article
      Open Access
      Objective. In epilepsy, high-frequency oscillations (HFOs) are expressively linked to the seizure onset zone (SOZ). The detection of HFOs in the noninvasive signals from scalp electroencephalography (EEG) and magnetoence ...
    • Automatic BSS-based filtering of metallic interference in MEG recordings: definition and validation using simulated signals 

      Migliorelli Falcone, Carolina Mercedes; Alonso López, Joan Francesc; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel; Nowak, Rafal; Russi Tintoré, Antonio (2015-05-27)
      Article
      Open Access
      Objective. One of the principal drawbacks of magnetoencephalography (MEG) is its high sensitivity to metallic artifacts, which come from implanted intracranial electrodes and dental ferromagnetic prosthesis and produce a ...
    • Avaliação do efeito da referencia em estudos farmacológicos mediante EEG 

      Fernández Márquez, Ana; Alonso López, Joan Francesc (2015)
      Conference lecture
      Open Access
      Um dos problemas que apresenta o registro de electroencefalogramas (EEG) está relacionado com a referência usada durante a aquisição dos dados. O presente artigo analisa o comportamento de três referências, o promédio ...
    • Cross-conditional entropy and coherence analysis of pharmaco-EEG changes induced by alprazolam 

      Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Romero Lafuente, Sergio; Rojas Martínez, Mónica; Riba Serrano, Jordi (2012-03)
      Article
      Restricted access - publisher's policy
      Rationale Quantitative analysis of electroencephalographic signals (EEG) and their interpretation constitute a helpful tool in the assessment of the bioavailability of psychoactive drugs in the brain. Furthermore, ...
    • Disseny i implementació de laboratoris virtuals per a l'ensenyament de l'enginyeria 

      Alonso López, Joan Francesc (2007)
      Poster (CCD project)
      Open Access
    • Drug effect on EEG connectivity assessed by linear and nonlinear couplings 

      Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Romero Lafuente, Sergio; Hoyer, Dirk; Riba Ruiz, Jordi-Roger; Barbanoj, Manel J. (2010-03)
      Article
      Restricted access - publisher's policy
      Quantitative analysis of human electroencephalogram (EEG) is a valuable method for evaluating psychopharmacological agents. Although the effects of different drug classes on EEG spectra are already known, interactions ...
    • Epileptic seizure prediction and onset zone localization using intracranial and scalp electroencephalographic and magnetoencephalographic signals 

      Marateb, Hamid Reza; Migliorelli Falcone, Carolina Mercedes; Bachiller Matarranz, Alejandro; Azimi, Tayebe; Nezhad, Farzad Ziaie; Mansourian, Marjan; Alonso López, Joan Francesc; Aparicio, Javier; San Antonio Arce, María Victoria; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel (Institute of Physics (IOP), 2020-09)
      Part of book or chapter of book
      Restricted access - publisher's policy
      In this chapter, we discuss how intracranial or scalp electroencephalographic and magnetoencephalographic recordings could be used for epileptic seizure prediction and onset zone localization. The signal processing methods ...
    • Estudi de la connectivitat cerebral durant la vigília prolongada 

      Marta, Alcalá; Alonso López, Joan Francesc; Giménez, Sandra; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel (EUETIB, 2014-12-01)
      Conference report
      Open Access
      En aquest estudi s’avaluen els efectes de la privació de son sobre el senyals electroencefalogràfics de voluntaris sans mitjançant la transferència d’entropia (TE), una tècnica no paramètrica que permet detectar dependències ...
    • Estudio de la actividad cortical espontánea en ratones transgénicos con Alzheimer 

      Montañà ortiz, Ernest; Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Sánchez Vives, Maria Victoria (2015)
      Conference lecture
      Open Access
      Las señales corticales del cerebro permiten una visión más clara de la actividad neuronal que el estudio clásico de las señales registradas en el cuero cabelludo y son de gran interés en el estudio de enfermedades ...
    • Estudio de la conectividad cerebral mediante transferencia de entropía 

      Alcalá Álvarez, Marta; Alonso López, Joan Francesc; Giménez Badia, Sandra; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel (2014)
      Conference lecture
      Open Access
      En el presente trabajo se estudian los efectos de la privación del sueño sobre las señales electroencefalográficas de voluntarios sanos mediante la transferencia de entropía (TE), una técnica no paramétrica que permite ...
    • Evaluation of multiple comparison correction procedures in drug assessment studies using LORETA maps 

      Alonso López, Joan Francesc; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel; Rojas Martínez, Mónica; Riba Serrano, Jordi; Barbanoj, Manuel José (2015-10-01)
      Article
      Open Access
      The identification of the brain regions involved in the neuropharmacological action is a potential procedure for drug development. These regions are commonly determined by the voxels showing significant statistical differences ...
    • Evaluation of Respiratory Muscles Activity by means of Cross Mutual Information Function at Different Levels of Ventilatory Effort 

      Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Hoyer, Dirk; Bruce, Eugene N.; Zbigniew L., Topor (Institute of Electrical and Electronics Engineers, 2007-09)
      Article
      Open Access
      Analysis of respiratory muscles activity is an effective technique for the study of pulmonary diseases such as obstructive sleep apnea syndrome (OSAS). Respiratory diseases, especially those associated with changes in the ...