Ara es mostren els items 20-30 de 30

    • One ring to rule them all: the unifying role of prefrontal cortex in steering task-related brain dynamics 

      Deco, Gustavo; Sanz Perl, Yonatan; Ponce Álvarez, Adrián Fernando; Tagliazucchi, Enzo; Whybrow, Peter C; Fuster, Joaquín; Kringelbach, Morten L. (2023-08)
      Article
      Accés obert
      Surviving and thriving in a complex world require intricate balancing of higher order brain functions with essential survival-related behaviours. Exactly how this is achieved is not fully understood but a large body of ...
    • Resting-state functional connectivity emerges from structurally and dynamically shaped slow linear fluctuations 

      Deco, Gustavo; Ponce Álvarez, Adrián Fernando; Mantini, Dante; Romani, Gian Luca; Hagmann, Patrick; Corbetta, Maurizio (2013-07-03)
      Article
      Accés obert
      Brain fluctuations at rest are not random but are structured in spatial patterns of correlated activity across different brain areas. The question of how resting-state functional connectivity (FC) emerges from the brain's ...
    • Resting-state temporal synchronization networks emerge from connectivity topology and heterogeneity 

      Ponce Álvarez, Adrián Fernando; Deco, Gustavo; Hagmann, Patrick; Romani, Gian Luca; Mantini, Dante; Corbetta, Maurizio (Public Library of Science (PLOS), 2015-02-18)
      Article
      Accés obert
      Spatial patterns of coherent activity across different brain areas have been identified during the resting-state fluctuations of the brain. However, recent studies indicate that resting-state activity is not stationary, ...
    • Spontaneous cortical activity is transiently poised close to criticality 

      Hahn, Gerald; Ponce Álvarez, Adrián Fernando; Monier, Cyril; Benvenuti, Giacomo; Kumar, Arvind; Chavane, Frédéric; Deco, Gustavo; Frégnac, Yves (Public Library of Science (PLOS), 2017-05-24)
      Article
      Accés obert
      Brain activity displays a large repertoire of dynamics across the sleep-wake cycle and even during anesthesia. It was suggested that criticality could serve as a unifying principle underlying the diversity of dynamics. ...
    • Stimulus-dependent variability and noise correlations in cortical MT neurons 

      Ponce Álvarez, Adrián Fernando; Thiele, Alexander; Albright, Thomas D.; Stoner, Gene R.; Deco, Gustavo (International Academy of Sciences (NAS), 2013-08-06)
      Article
      Accés obert
      Population codes assume that neural systems represent sensory inputs through the firing rates of populations of differently tuned neurons. However, trial-by-trial variability and noise correlations are known to affect the ...
    • Synaptic depression and slow oscillatory activity in a biophysical network model of the cerebral cortex 

      Benita, Jose M.; Guillamon Grabolosa, Antoni; Deco, Gustavo; Sánchez-Vives, Maria V. (2012-08-28)
      Article
      Accés obert
      Short-termsynapticdepression(STD)isaformofsynapticplasticitythathasalargeimpactonnetworkcomputations.ExperimentalresultssuggestthatSTDismodulatedbycorticalactivity,decreasingwithactivityinthenetworkandincreasingduringsil ...
    • Task-driven activity reduces the cortical activity space of the brain: experiment and whole-brain modeling 

      Ponce Álvarez, Adrián Fernando; He, Biyu J; Hagmann, Patrick; Deco, Gustavo (Public Library of Science (PLOS), 2015-08-28)
      Article
      Accés obert
      How a stimulus or a task alters the spontaneous dynamics of the brain remains a fundamental open question in neuroscience. One of the most robust hallmarks of task/stimulus-driven brain dynamics is the decrease of variability ...
    • The emergence of spontaneous and evoked functional connectivity in a large-scale model of the brain 

      Ponce Álvarez, Adrián Fernando; Deco, Gustavo (Elsevier, 2015-02-24)
      Capítol de llibre
      Accés restringit per política de l'editorial
      We show how functional connectivity (FC) emerges in an anatomically constrained large-scale spiking model of the brain. To gain theoretical insights, we approximate the model, using a mean-field technique that leads to a ...
    • The Hopf whole-brain model and its linear approximation 

      Ponce Álvarez, Adrián Fernando; Deco, Gustavo (Springer Nature, 2024-01-31)
      Article
      Accés obert
      Whole-brain models have proven to be useful to understand the emergence of collective activity among neural populations or brain regions. These models combine connectivity matrices, or connectomes, with local node dynamics, ...
    • Using in silico perturbational approach to identify critical areas in schizophrenia 

      Vila Vidal, Manel; Kringelbach, Morten L.; Deco, Gustavo (2023-06-15)
      Article
      Accés restringit per política de l'editorial
      Schizophrenia is a debilitating neuropsychiatric disorder whose underlying correlates remain unclear despite decades of neuroimaging investigation. One contentious topic concerns the role of global signal (GS) fluctuations ...
    • Whole-brain neuronal activity displays crackling noise dynamics 

      Ponce Álvarez, Adrián Fernando; Jouary, Adrien; Privat, Martin; Deco, Gustavo; Sumbre, Germán (2018-12-19)
      Article
      Accés obert
      Previous studies suggest that the brain operates at a critical point in which phases of order and disorder coexist, producing emergent patterned dynamics at all scales and optimizing several brain functions. Here, we ...