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12 Result(s)

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  1. No Access

    Chapter and Conference Paper

    Long Term Modulation and Control of Neuronal Firing in Excitable Tissue Using Optogenetics

    Since the initial demonstration of nerve excitation and the subsequent action potential generation by Hodgkin and Huxley in 1952, most efforts in modulating or restoring neural activity to cure diseases or inj...

    L. Humphreys, J. M. Ferrández, E. Fernández in Foundations on Natural and Artificial Comp… (2011)

  2. No Access

    Chapter and Conference Paper

    Neural Prosthetic Interfaces with the Central Nervous System: Current Status and Future Prospects

    Rehabilitation of sensory and/or motor functions in patients with neurological diseases is more and more dealing with artificial electrical stimulation and recording from populations of neurons using biocompat...

    E. Fernández in Methods and Models in Artificial and Natur… (2009)

  3. No Access

    Chapter and Conference Paper

    Analysis of Retinal Ganglion Cells Population Responses Using Information Theory and Artificial Neural Networks: Towards Functional Cell Identification

    In this paper, we analyse the retinal population data looking at behaviour. The method is based on creating population subsets using the autocorrelograms of the cells and grou** them according to a minimal E...

    M. P. Bonomini, J. M. Ferrández, J. Rueda… in Methods and Models in Artificial and Natur… (2009)

  4. No Access

    Chapter and Conference Paper

    Activity Modulation in Human Neuroblastoma Cultured Cells: Towards a Biological Neuroprocessor

    The main objective of this work is to analyze the computing capabilities of human neuroblastoma cultured cells and to define stimulation patterns able to modulate the neural activity in response to external st...

    J. M. Ferrández-Vicente, M. Bongard… in Methods and Models in Artificial and Natur… (2009)

  5. No Access

    Chapter and Conference Paper

    Functional Identification of Retinal Ganglion Cells Based on Neural Population Responses

    The issue of classification has long been a central topic in the analysis of multielectrode data, either for spike sorting or for getting insight into interactions among ensembles of neurons. Related to coding...

    M. P. Bonomini, J. M. Ferrández, E. Fernández in Bio-inspired Modeling of Cognitive Tasks (2007)

  6. No Access

    Chapter and Conference Paper

    An Adaptable Multichannel Architecture for Cortical Stimulation

    An architecture for a cortical stimulator with visual neuroprosthetic purposes is presented. This device uses a 3D penetrating multielectrode array, which will be implanted in V1, offering different signal amp...

    J. M. Ferrández, E. Liaño, M. P. Bonomini… in Bio-inspired Modeling of Cognitive Tasks (2007)

  7. No Access

    Chapter and Conference Paper

    A Multiplexed Current Source Portable Stimulator Architecture for a Visual Cortical Neuroprosthesis

    A multiplexed current source architecture for neuroprosthetic purposes is presented. This device uses a penetrating multielectrode array which will be implanted in visual cortex, offering different signal ampl...

    J. M. Ferrández, M. P. Bonomini… in Mechanisms, Symbols, and Models Underlying… (2005)

  8. No Access

    Chapter and Conference Paper

    Formulation and Validation of a Method for Classifying Neurons from Multielectrode Recordings

    The issue of classification has long been a central topic in the analysis of multielectrode data, either for spike sorting or for getting insight into interactions among ensembles of neurons. Related to coding...

    M. P. Bonomini, J. M. Ferrandez, J. A. Bolea… in Mechanisms, Symbols, and Models Underlying… (2005)

  9. No Access

    Chapter and Conference Paper

    A Gradient Descent MRI Illumination Correction Algorithm

    Magnetic Resonance Images(MRI) are piecewise constant functions that can be corrupted by an inhomogeneous illumination field. We propose a gradient descent parametric illumination correction algorithm for MRI....

    M. Garcia, E. Fernandez, M. Graña… in Computational Intelligence and Bioinspired… (2005)

  10. No Access

    Chapter and Conference Paper

    Validation of a Cortical Electrode Model for Neuroprosthetics purposes

    A study of the electrical parameters of a microelectrode array designed for chronic current stimulation through cortical tissue was carried out. The microelectrode array was inmersed in ringer solution for mea...

    F.J García-de-Quirós, M.P. Bonomini… in Artificial Neural Nets Problem Solving Met… (2003)

  11. No Access

    Chapter and Conference Paper

    Neural Coding Analysis in Retinal Ganglion Cells Using Information Theory

    Information Theory is used for analyzing the neural code of retinal ganglion cells. This approximation may quantify the amount of information transmitted by the whole population, versus single cells. The redun...

    J. M. Ferrández, M. Bongard, F. García de Quirós… in Artificial Neural Networks — ICANN 2002 (2002)

  12. No Access

    Chapter and Conference Paper

    Advanced Visualization of 3D data of Intravascular Ultrasound images

    Intravascular ultrasound images (IVUS) have allowed deepening in the knowledge of the true extension of the coronary vessel illness. Today, vessel diagnosis is limited to observation and measurements in the IV...

    D. Rotger, C. Cañero, P. Radeva, J. Mauri, E. Fernandez, A. Tovar… in Medical Data Analysis (2001)