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  • Publication details - IFISC
    reaction diffusion models for cell polarity that feature conservation of mass rapid cytoplasmic diffusion and bistability via a cusp bifurcation of uniform states In all three models the nonuniform polar states are front solutions and growth of domains ceases through stalling of a propagating front For these three models we find a characteristic parameter space topology comprising a region of linear instability that loops around the cusp point and that

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2596 (2016-02-15)
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  • Publication details - IFISC
    time difference implicit in the relative phase reflects the transmission time of neuronal activity However Brovelli et al 2004 observed that in monkeys engaged in processing a cognitive task a dominant directional influence from one area of sensorimotor cortex to another may be accompanied by either a negative or a positive time delay Here we present a model of two brain regions coupled with a well defined directional influence that displays similar features to those observed in the experimental data This model is inspired by the theoretical framework of Anticipated Synchronization developed in the field of dynamical systems Anticipated Synchronization is a form of synchronization that occurs when a unidirectional influence is transmitted from a sender to a receiver but the receiver leads the sender in time This counterintuitive synchronization regime can be a stable solution of two dynamical systems coupled in a masterslave sender receiver configuration when the slave receives a negative delayed self feedback Despite efforts to understand the dynamics of Anticipated Synchronization experimental evidence for it in the brain has been lacking By reproducing experimental delay times and coherence spectra our results provide a theoretical basis for the underlying mechanisms of the observed dynamics and suggest that

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2499 (2016-02-15)
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  • Publication details - IFISC
    Publicacions Deriving partition functions and entropic functionals from thermodynamics Plastino A Curado E M F Nobre F D Physica A 403 13 20 2014 DOI 10 1016 j physa 2014 02 009 Fitxers Tornar a la llista de publicacions Cerca publicacions Conté la paraula es Operador AND OR NOT Paraules adicionals Línia d investigació Totes Complex Quantum Optics Fluids Biosystems Social Outreach Cerca avançada Xerrades i Presentacions Cercar a les

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2602 (2016-02-15)
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  • Publication details - IFISC
    Photonic Brain Fischer I Mirasso C International Innovation 140 May 64 66 2014 http www internationalinnovation com a photonic brain Fitxers Ingo Fischer Claudio Mirasso Intl Innovation 140 Research Media 05 HR pdf 4206492 Bytes Tornar a la llista de publicacions Cerca publicacions Conté la paraula es Operador AND OR NOT Paraules adicionals Línia d investigació Totes Complex Quantum Optics Fluids Biosystems Social Outreach Cerca avançada Xerrades i Presentacions Cercar

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2544 (2016-02-15)
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  • Publication details - IFISC
    into account third order dispersion effects We show that cavity solitons underlying Kerr frequency combs normally sensitive to oscillatory and chaotic instabilities are stabilized in a wide range of parameter space by third order dispersion Moreover we demonstrate how the snaking structure organizing compound states of multiple cavity solitons is qualitatively changed by third order dispersion promoting an increased stability of Kerr combs underlined by a single cavity soliton DOI

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2524 (2016-02-15)
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  • Publication details - IFISC
    performance of an optoelectronic phase chaos system operating with telecom components to generate random bits The key component of the system is differential delay namely the system is subject to two delay times which differ in an amount much larger than the autocorrelation time This is implemented by a delay loop and an imbalanced Mach Zhender modulator We show that after suitable digitalization of the chaotic signal the generated bits pass all the NIST test for randomness We also show that the system can be extended to have several chains in parallel each with a Mach Zhender modulator each chain being used to produce a sequence of random bits If the differential delays of the Mach Zhenders differ by an amount larger than the autocorrelation time of the chaotic dynamics the output of the different chains is uncorrelated and therefore can be used for parallel generation of statistically independent random bit streams In addition we also find that a sequence constructed by interleaving the parallel bit streams also pass all the NIST tests for randomness Based on the least significant bits which can be included in the sequence and the number of the parallel branches which can be implemented we

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2594 (2016-02-15)
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  • Publication details - IFISC
    specific network motif has proven to be the most robust with respect to parameter mismatch and system noise Surprisingly despite a contrary belief in the community the common driving motif is an unreliable means of establishing zero lag synchrony Although dynamical relaying has been validated in empirical and computational studies the deeper dynamical mechanisms and comparison to dynamics on other motifs is lacking By systematically comparing synchronization on a variety of small motifs we establish that the presence of a single reciprocally connected pair a resonance pair plays a crucial role in disambiguating those motifs that foster zero lag synchrony in the presence of conduction delays such as dynamical relaying from those that do not such as the common driving triad Remarkably minor structural changes to the common driving motif that incorporate a reciprocal pair recover robust zero lag synchrony The findings are observed in computational models of spiking neurons populations of spiking neurons and neural mass models and arise whether the oscillatory systems are periodic chaotic noise free or driven by stochastic inputs The influence of the resonance pair is also robust to parameter mismatch and asymmetrical time delays amongst the elements of the motif We call this manner

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2540 (2016-02-15)
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  • Publication details - IFISC
    different pelagic durations and seasons are modeled as passive tracers advected in a simulated oceanic surface flow from which a network of connected areas is constructed Hydrodynamical provinces extracted from this network are delimited by frontiers which match multi scale oceanographic features By examining the repeated occurrence of such boundaries we identify the spatial scales and geographic structures that would control larval dispersal across the entire seascape Based on these

    Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2463 (2016-02-15)
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