Exploració per autor "García Ojalvo, Jordi"
Ara es mostren els items 21-40 de 41
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Modelos físicos de actividad cerebral: de la micro- a la macro-escala
Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2012-09-01)
Article
Accés restringit per política de l'editorial -
Multi-stability and transient chaotic dynamics in semiconductor lasers with time-delayed optical feedback
Zamora Munt, Jordi; Masoller Alonso, Cristina; García Ojalvo, Jordi (World Scientific Publishing, 2010)
Capítol de llibre
Accés restringit per política de l'editorialWe investigate numerically the chaotic transient dynamics of a semiconductor laser with time-delayed optical feedback. This transient behavior is seen in the low-frequency fluctuations (LFF) regime ocurring when the laser ... -
Mutual regulation causes co-entrainment between a synthetic oscillator and the bacterial cell cycle
Dies, Marta; Galera Laporta, Leticia; García Ojalvo, Jordi (2016-01-01)
Article
Accés obertThe correct functioning of cells requires the orchestration of multiple cellular processes, many of which are inherently dynamical. The conditions under which these dynamical processes entrain each other remain unclear. ... -
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 ... -
Optimizing periodicity and polymodality in noise-induced genetic oscillators
Rue Queralt, Pau; Süel, Gürol M.; García Ojalvo, Jordi (2011)
Article
Accés obertMany cellular functions are based on the rhythmic organization of biological processes into self-repeating cascades of events. Some of these periodic processes, such as the cell cycles of several species, exhibit conspicuous ... -
Phase separation driven by external fluctuations
García Ojalvo, Jordi; Lacasta Palacio, Ana María; Sancho, Jose Maria; Toral, R. (EDP Sciences, 1998-04-30)
Article
Accés obertThe influence of external fluctuations in phase separation processes is analysed. These fluctuations arise from random variations of an external control parameter. A linear stability analysis of the homogeneous state ... -
Phase-Coherence Transitions and Communication in the Gamma Range between Delay-Coupled Neuronal Populations
Barardi, Alessandro; Sancristóbal Alonso, Belén de; García Ojalvo, Jordi (2014-07-01)
Article
Accés obertSynchronization between neuronal populations plays an important role in information transmission between brain areas. In particular, collective oscillations emerging from the synchronized activity of thousands of neurons ... -
Pràctiques de l'assignatura
Botey Cumella, Muriel; Martorell Pena, Jordi; Belana Punseti, Juan; Carloa Cañadas, Joan; Diego Vives, José Antonio; Font García, Josep Lluís; Martin, Josep; Mudarra López, Miguel; Vilaseca Alavedra, Ramon; Calaf Zayas, Jaume; García Ojalvo, Jordi (Universitat Politècnica de Catalunya, 2000)
Pràctica
Accés obert -
Processing distributed inputs in coupled excitable lasers
Martínez González, Cristina; Martín Buldú, Javier; Torrent Serra, Maria del Carmen; García Ojalvo, Jordi (2007-11)
Article
Accés obertIn many instances, networks of dynamical elements are subject to distributed input signals that enter the network through different nodes. In these cases, processing of the input signals may be mediated by coupling, in ... -
Regulated fluctuations in nanog expression mediate cell fate decisions in embryonic stem cells
Kalmar, Tibor; Lim, Chea; Hayward, Penelope; Muñoz-Descalzo, Silvia; Nichols, Jennifer; García Ojalvo, Jordi; Martinez-Arias, Alfonso (2009-07-07)
Article
Accés obertThere is evidence that pluripotency of mouse embryonic stem (ES) cells is associated with the activity of a network of transcription factors with Sox2, Oct4, and Nanog at the core. Using fluorescent reporters for the ... -
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 ... -
Role of frequency mismatch in neuronal communication through coherence
Sancristóbal Alonso, Belén de; Vicente, Raul; García Ojalvo, Jordi (2014-02-12)
Article
Accés restringit per política de l'editorialNeuronal gamma oscillations have been described in local field potentials of different brain regions of multiple species. Gamma oscillations are thought to reflect rhythmic synaptic activity organized by inhibitory ... -
Single-cell Bayesian deconvolution
Torregrosa Cortés, Gabriel; Oriola Santandreu, David; Trivedi, Vikas; García Ojalvo, Jordi (Elsevier, 2023-10-20)
Article
Accés obertIndividual cells exhibit substantial heterogeneity in protein abundance and activity, which is frequently reflected in broad distributions of fluorescently labeled reporters. Since all cellular components are intrinsically ... -
Stimulus induced resonance in a neural mass model driven with a temporally correlated noise
Jedynak, Maciej; Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2015)
Comunicació de congrés
Accés obert -
Synchronization via clustering in a small delay-coupled laser network
Martínez González, Cristina; Masoller Alonso, Cristina; Torrent Serra, Maria del Carmen; García Ojalvo, Jordi (2007-09)
Article
Accés restringit per política de l'editorial -
Synchronization-based computation through networks of coupled oscillators
Malagarriga Guasch, Daniel; Garcia Vellisca, Mariano A.; Villa, Alessandro; Martín Buldú, Javier; García Ojalvo, Jordi; Pons Rivero, Antonio Javier (2015-08-04)
Article
Accés obertThe mesoscopic activity of the brain is strongly dynamical, while at the same time exhibits remarkable computational capabilities. In order to examine how these two features coexist, here we show that the patterns of ... -
Temporally correlated fluctuations drive epileptiform dynamics
Jedynak, Maciej; Pons Rivero, Antonio Javier; García Ojalvo, Jordi; Goodfellow, Marc (2017-02-01)
Article
Accés obertMacroscopic models of brain networks typically incorporate assumptions regarding the characteristics of afferent noise, which is used to represent input from distal brain regions or ongoing fluctuations in non-modelled ... -
Timing cellular decision making under noise via cell-cell communication
Koseska, Aneta; Zaikin, Alexey; Kurths, Juergen; García Ojalvo, Jordi (2009-03-13)
Article
Accés obertMany cellular processes require decision making mechanisms, which must act reliably even in the unavoidable presence of substantial amounts of noise. However, the multistable genetic switches that underlie most decision-making ... -
Towards a statistical mechanics of cell fate decisions
García Ojalvo, Jordi; Martinez Arias, Alfonso (2012-12)
Article
Accés restringit per política de l'editorial