Exploració per autor "Pons Rivero, Antonio Javier"
Ara es mostren els items 1-20 de 23
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Collective excitability in a mesoscopic neuronal model of epileptic activity
Jedynak, Maciej; Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2018-01-12)
Article
Accés obertAt the mesoscopic scale, the brain can be understood as a collection of interacting neuronal oscillators, but the extent to which its sustained activity is due to coupling among brain areas is still unclear. Herewe address ... -
Complex temporal patterns processing by a neural mass model of a cortical column
Malagarriga, Daniel; Pons Rivero, Antonio Javier; Villa, Alejandro E. P. (2019-04-06)
Article
Accés obertIt is well known that neuronal networks are capable of transmitting complex spatiotemporal information in the form of precise sequences of neuronal discharges characterized by recurrent patterns. At the same time, the ... -
Consistency of heterogeneous synchronization patterns in complex weighted networks
Malagarriga Guasch, Daniel; Villa, Alessandro; García Ojalvo, Jordi; Pons Rivero, Antonio Javier (Institute of Physics (IOP), 2017-03-10)
Article
Accés obertSynchronization within the dynamical nodes of a complex network is usually considered homogeneous through all the nodes. Here we show, in contrast, that subsets of interacting oscillators may synchronize in different ways ... -
Cómo se fracturan los materiales
Pons Rivero, Antonio Javier (2013-01-01)
Article
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Crack front segmentation and facet coarsening in mixed-mode fracture
Chen, Chih-Hung; Cambonie, Tristan; Lazarus, Veronique; Nicoli, Matteo; Pons Rivero, Antonio Javier; Karma, Alain (2015-12-30)
Article
Accés obertA planar crack generically segments into an array of “daughter cracks” shaped as tilted facets when loaded with both a tensile stress normal to the crack plane (mode I) and a shear stress parallel to the crack front (mode ... -
Cracks tamed
Pons Rivero, Antonio Javier (2012-05-10)
Article
Accés restringit per política de l'editorialCrack propagation in materials is rarely welcome. But carefully engineered cracks produced during the deposition of a film on silicon can be used to efficiently create pre-designed patterns of nanometre-scale channels. -
Cross-frequency transfer in a stochastically driven mesoscopic neuronal model
Jedynak, Maciej; Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2015-02-16)
Article
Accés obertThe brain is known to operate in multiple coexisting frequency bands. Increasing experimental evidence suggests that interactions between those distinct bands play a crucial role in brain processes, but the dynamical ... -
Differentiating resting brain states using ordinal symbolic analysis
Quintero Quiroz, Carlos Alberto; Montesano Del Campo, Luis; Pons Rivero, Antonio Javier; Torrent Serra, Maria del Carmen; García Ojalvo, Jordi; Masoller Alonso, Cristina (Institute of Physics (IOP), 2018-10-08)
Article
Accés obertSymbolic methods of analysis are valuable tools for investigating complex time-dependent signals. In particular, the ordinal method defines sequences of symbols according to the ordering in which values appear in a time ... -
Excitation/inhibition patterns in a system of coupled cortical columns
Malagarriga Guasch, Daniel; Villa, Alessandro; García Ojalvo, Jordi; Pons Rivero, Antonio Javier (2014)
Text en actes de congrés
Accés restringit per política de l'editorialWe study how excitation and inhibition are distributed mesoscopically in small brain regions, by means of a computational model of coupled cortical columns described by neural mass models. Two cortical columns coupled ... -
Extracranial Estimation of Neural Mass Model Parameters Using the Unscented Kalman Filter
Escuain i Poole, Lara Sofia; García Ojalvo, Jordi; Pons Rivero, Antonio Javier (2018-10-15)
Article
Accés obertData assimilation, defined as the fusion of data with preexisting knowledge, is particularly suited to elucidating underlying phenomena from noisy/insufficient observations. Although this approach has been widely used in ... -
Helical crack-front instability in mixed-mode fracture
Pons Rivero, Antonio Javier; Karma, Alain (2010-03-04)
Article
Accés restringit per política de l'editorial[...]We show that the dynamically preferred unstable wavelength is governed by the balance of the destabilizing effect of far-field stresses and the stabilizing effect of cohesive forces on the process zone scale, and we ... -
Inferring the connectivity of coupled chaotic oscillators using Kalman filtering
Forero Ortiz, Edwar Andres; Tirabassi, Giulio; Masoller Alonso, Cristina; Pons Rivero, Antonio Javier (Nature, 2021-11-17)
Article
Accés obertInferring the interactions between coupled oscillators is a significant open problem in complexity science, with multiple interdisciplinary applications. While the Kalman filter (KF) technique is a well-known tool, widely ... -
Information routing driven by background chatter in a signaling network
Domedel Puig, Núria; Rue Queralt, Pau; Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2011-12-08)
Article
Accés obertLiving systems are capable of processing multiple sources of information simultaneously. This is true even at the cellular level, where not only coexisting signals stimulate the cell, but also the presence of fluctuating ... -
Mesoscopic Segregation of Excitation and Inhibition in a Brain Network Model
Malagarriga Guasch, Daniel; Villa, Alessandro; García Ojalvo, Jordi; Pons Rivero, Antonio Javier (2015-02-09)
Article
Accés obertNeurons in the brain are known to operate under a careful balance of excitation and inhibition, which maintains neural microcircuits within the proper operational range. How this balance is played out at the mesoscopic ... -
Modelos físicos de actividad cerebral: de la micro- a la macro-escala
Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2012-09-01)
Article
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Noise-induced up/down dynamics in scale-free neuronal networks
Grau Moya, Jordi; Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2012-07-31)
Article
Accés obertCortical neuronal networks are known to exhibit regimes of dynamical activity characterized by periods of elevated firing (up states) separated by silent phases (down states). Here, we show that up/down dynamics may emerge ... -
Parameter and coupling estimation in small networks of Izhikevich's neurons
Aristides, Raul de Palma; Pons Rivero, Antonio Javier; Cerdeira, Hilda; Masoller Alonso, Cristina; Tirabassi, Giulio (2023-04-12)
Article
Accés obertNowadays, experimental techniques allow scientists to have access to large amounts of data. In order to obtain reliable information from the complex systems that produce these data, appropriate analysis tools are needed. ... -
Quantifying sudden changes in dynamical systems using symbolic networks
Masoller Alonso, Cristina; Hong, Yanhua; Ayad, Sarah; Gustave, Francois; Barland, Stéphane; Pons Rivero, Antonio Javier; Gómez, Sergio; Arenas, Alex (2015-02-24)
Article
Accés obertWe characterize the evolution of a dynamical system by combining two well-known complex systems' tools, namely, symbolic ordinal analysis and networks. From the ordinal representation of a time series we construct a network ... -
Relating structural and functional anomalous connectivity in the aging brain via neural mass modeling
Pons Rivero, Antonio Javier; Cantero, Jose Luis; Atienza, Mercedes; García Ojalvo, Jordi (2010-09)
Article
Accés restringit per política de l'editorialThe structural changes that arise as the brain ages influence its functionality. In many cases, the anatomical degradation simply leads to normal aging. In others, the neurodegeneration is large enough to cause neurological ... -
Relaxation dynamics and frequency response of a noisy cell signaling network
Rue Queralt, Pau; Pons Rivero, Antonio Javier; Domedel Puig, Núria; García Ojalvo, Jordi (2010-12-30)
Article
Accés obertWe investigate the dynamics of cell signaling using an experimentally based Boolean model of the human fibroblast signal transduction network. We determine via systematic numerical simulations the relaxation dynamics of ...