Exploració per tema "Neurologia"

Ara es mostren els items 1-20 de 42

    • A view-based decision mechanism for rewards in the primate amygdala 

      Grabenhorst, Fabian; Ponce Álvarez, Adrián Fernando; Battaglia-Mayer, Alexandra; Deco, Gustavo; Schultz, Wolfram (2023-12-06)
      Article
      Accés obert
      Primates make decisions visually by shifting their view from one object to the next, comparing values between objects, and choosing the best reward, even before acting. Here, we show that when monkeys make value-guided ...

    • Analysis of the Interlimb similarity of motor patterns for improving stroke assessment and neurorehabilitation 

      Urra, Oiane (Universitat Politècnica de Catalunya, 2016-10-27)
      Tesi
      Accés obert
      Stroke is the leading cause of adult disability, with upper limb hemiparesis being one of the most common consequences. Regaining voluntary arm movement is one of the major goals of rehabilitation. However, even with ...

    • Aplicaciones de Kinect para neurohabilitación 

      De la Fuente Garrido, David (Universitat Politècnica de Catalunya, 2012-05-31)
      Treball Final de Grau
      Accés obert
      Kinect para Xbox 360, o simplemente Kinect es un dispositivo controlador para videojuegos desarrollado por Microsoft para la videoconsola Xbox 360, y desde junio del 2011 para PC con sistema operativo Windows 7 o Windows ...

    • Circuit mechanisms for the chemical modulation of cortex-wide network interactions and behavioral variability 

      Pfeffer, Thomas; Ponce Álvarez, Adrián Fernando; Tsetsos, Konstantinos; Meindertsma, Thomas; Gahnström, Christoffer Julius; van den Brink, Ruud Lucas; Nolte, Guido; Engel, Andreas Karl; Deco, Gustavo; Donner, Thobias Hinrich (2021-07-16)
      Article
      Accés obert
      Influential theories postulate distinct roles of catecholamines and acetylcholine in cognition and behavior. However, previous physiological work reported similar effects of these neuromodulators on the response properties ...

    • Cognitive research application for Huntington's disease 

      Pedreros Almeciga, Laura Daniela (Universitat Politècnica de Catalunya, 2022-04-29)
      Projecte Final de Màster Oficial
      Accés obert
      Huntington's disease is an inherited neurodegenerative disorder caused by the gradual degeneration of parts of the basal ganglia called the caudate nucleus and putamen, which are responsible for the facilitation and ...

    • Cortical state transitions and stimulus response evolve along stiff and sloppy parameter dimensions, respectively 

      Ponce Álvarez, Adrián Fernando; Mochol, Gabriela; Hermoso-Mendizabal, Ainhoa; de la Rocha, Jaime; Deco, Gustavo (2020-03-17)
      Article
      Accés obert
      Previous research showed that spontaneous neuronal activity presents sloppiness: the collective behavior is strongly determined by a small number of parameter combinations, defined as ‘stiff’ dimensions, while it is ...

    • Critical scaling of whole-brain resting-state dynamics 

      Ponce Álvarez, Adrián Fernando; Kringelbach, Morten L.; Deco, Gustavo (Springer Nature, 2023-06-10)
      Article
      Accés obert
      Scale invariance is a characteristic of neural activity. How this property emerges from neural interactions remains a fundamental question. Here, we studied the relation between scale-invariant brain dynamics and structural ...

    • Cuantificación de Errores de Posicionado de electrodos electroencefalográficos 

      Pàmies Vilà, Rosa; Fabregat Sanjuan, Albert; Ros Alsina, Aina; Pascual Rubio, Vicenç (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Los intercambios bioquímicos entre las neuronas del cerebro producen una pequeña actividad eléctrica detectable con la colocación de electrodos en el cuero cabelludo. En los últimos años están apareciendo técnicas de ...

    • Daytime Ayahuasca administration modulates REM and slow-wave sleep in healthy volunteers 

      Barbanoj, Manel J.; Riba, J; Clos, S; Gimenez, S; Grasa, E; Romero Lafuente, Sergio (2008-02)
      Article
      Accés obert
      Ayahuasca is a traditional South American psychoactive beverage and the central sacrament of Brazilianbased religious groups, with followers in Europe and the United States. The tea contains the psychedelic indole ...

    • Design of a service supporting kinect technology 

      Chernov, Daniil (Universitat Politècnica de Catalunya, 2014-09-10)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat

    • Distinct modes of functional connectivity induced by movie-watching 

      Demirtas, Murat; Ponce Álvarez, Adrián Fernando; Gilson, Matthieu; Hagmann, Patrick; Mantini, Dante; Betti, Viviana; Romani, Gian Luca; Friston, Karl J.; Corbetta, Maurizio; Deco, Gustavo (2019-01-01)
      Article
      Accés obert
      A fundamental question in systems neuroscience is how endogenous neuronal activity self-organizes during particular brain states. Recent neuroimaging studies have demonstrated systematic relationships between resting-state ...

    • Dynamics of cortical neuronal ensembles transit from decision making to storage for later report 

      Ponce Álvarez, Adrián Fernando; Nácher, Verónica; Luna, Rogelio; Riehle, Alexa; Romo, Ranulfo (2012-08-29)
      Article
      Accés obert
      Decisions based on sensory evaluation during single trials may depend on the collective activity of neurons distributed across brain circuits. Previous studies have deepened our understanding of how the activity of individual ...

    • Estimation of directed effective connectivity from fMRI functional connectivity hints at asymmetries of cortical connectome 

      Gilson, Matthieu; Moreno-Bote, Rubén; Ponce Álvarez, Adrián Fernando; Ritter, Petra; Deco, Gustavo (Public Library of Science (PLOS), 2016-03-16)
      Article
      Accés obert
      The brain exhibits complex spatio-temporal patterns of activity. This phenomenon is governed by an interplay between the internal neural dynamics of cortical areas and their connectivity. Uncovering this complex relationship ...

    • Eye tracking technology for diagnosis of neurological disorders 

      Goset Maldonado, Joan (Universitat Politècnica de Catalunya, 2022-06-16)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat

    • Functional network antagonism and consciousness 

      Demertzi, Athena; Kucyi, Aaron; Ponce Álvarez, Adrián Fernando; Keliris, Georgios; Susan Whitfield-Gabrieli, Susan; Deco, Gustavo (The MIT Press. Massachusetts Institute of Technology, 2022-10-01)
      Article
      Accés obert
      Spontaneous brain activity changes across states of consciousness. A particular consciousness-mediated configuration is the anticorrelations between the default mode network and other brain regions. What this antagonistic ...

    • How local excitation-inhibition ratio impacts the whole brain dynamics 

      Deco, Gustavo; Ponce Álvarez, Adrián Fernando; Hagmann, Patrick; Romani, Gian Luca; Mantini, Dante; Corbetta, Maurizio (2014-06-04)
      Article
      Accés obert
      The spontaneous activity of the brain shows different features at different scales. On one hand, neuroimaging studies show that long-range correlations are highly structured in spatiotemporal patterns, known as resting-state ...

    • In vitro characterization of a nanostructured fibrin agarose bio-artificial nerve substitute 

      Carriel, Victor; Scionti, Giuseppe; Campos, Fernando; Roda, Olga; Castro, Begoña; Cornelissen, Maria; Garzón Bello, Ingrid Johanna; Alaminos Mingorance, Miguel (2015-07-14)
      Article
      Accés obert
      Neural tissue engineering is focused on the design of novel biocompatible substitutes to repair peripheral nerve injuries. In this paper we describe a nanostructured fibrin–agarose bioartificial nerve substitute (NFABNS), ...

    • Increased frontal and paralimbic activation following ayahuasca, the pan-Amazonian inebriant 

      Riba, J; Romero Lafuente, Sergio; Grasa, E; Mena, E; Carrio, I; Barbanoj, Manel J. (2006-03)
      Article
      Accés obert
      Ayahuasca is a South American psychoactive plant tea which contains the serotonergic psychedelic N,N-dimethyltryptamine (DMT) and monoamine- oxidase inhibitors that render DMT orally active. Previous investigations ...

    • Increased sensitivity to strong perturbations in a whole-brain model of LSD 

      Jobst, Beatrice M.; Atasoy, Selen; Ponce Álvarez, Adrián Fernando; Sanjuan, Ana; Roseman, Leor; Kaelen, Mendel; Carhart-Harris, Robin; Kringelbach, Morten L.; Deco, Gustavo (2021-04-15)
      Article
      Accés obert
      Lysergic acid diethylamide (LSD) is a potent psychedelic drug, which has seen a revival in clinical and pharmacological research within recent years. Human neuroimaging studies have shown fundamental changes in brain-wide ...

    • Increased stability and breakdown of brain effective connectivity during slow-wave sleep: mechanistic insights from whole-brain computational modelling 

      Jobst, Beatrice M.; Hindriks, Rikkert; Laufs, Helmut; Tagliazucchi, Enzo; Hahn, Gerald; Ponce Álvarez, Adrián Fernando; Stevner, Angus B.A.; Kringelbach, Morten L.; Deco, Gustavo (Springer Nature, 2017-07-05)
      Article
      Accés obert
      Recent research has found that the human sleep cycle is characterised by changes in spatiotemporal patterns of brain activity. Yet, we are still missing a mechanistic explanation of the local neuronal dynamics underlying ...