10
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Identificación de las respuestas de redes neuronales cerebrales y artificiales ante la presencia de estímulos frecuentes e infrecuentes mediante filtros de tipo kalman Translated title: Heuristics for solving the multiple problem Identification of the responses of brain and artificial neural networks in the presence of usual and unusual stimuli by means of kalman-type filters

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Consideramos el problema de la obtención de información acerca del reconocimiento de incongruencias con patrones lógicos ya impresos de una subred de una red neuronal, ya sea cerebral, o diseñada artificialmente, mediante la medición de los potenciales evocados (PE) cerebrales. Uno de los objetivos ulteriores, es la detección de inconsistencias lógicas del discurso, no puramente semánticas, sino del reconocimiento de frases no coherentes con una línea de relato. La posibilidad del uso, con este fin, de PE obtenidos de electrodos ubicados superficialmente sobre el cuero cabelludo sería interesante: serían obtenidas conclusiones relevantes a partir de un método no-invasivo y mediante un equipamiento que es relativamente económico, de fácil transporte e instalación. La alternativa que proponemos es la utilización de filtros tipo Kalman (con necesarias modificaciones). La idea es tratar a la respuesta evocada como una variable no accesible, con una relación (no lineal, pero localmente linealizable) respecto de la variable mensurable. Estudiamos, como ejemplo guía, la evolución de una variable que mide, en una red neuronal de atractores tipo Hopfield, el ajuste entre el estado de una subred asociada al reconocimiento de ciertos patrones, luego de una cantidad prefijada de iteraciones.

          Translated abstract

          We consider the problem of obtaining information about the recognition of logical inconsistencies with already imprinted patterns of a subnetwork of a neural network, both cerebral and artificially designed, by means of the measurement of the event related potentials (ERP). One of the subsequent aims, it is the detection of logical inconsistencies of the speech, not purely semantic, but of the recognition of not coherent phrases with a story line. The possibility of the use, with this goal, of ERP obtained of superficially located electrodes on the scalp would be interesting: relevant conclusions would be obtained from a non-invasive method and by means of equipment that is relatively economic, easily transportable and installable. The alternative that we propose is the utilization of Kalman type filters (with necessary modifications). The idea is to deal with the evoked response as a not accessible variable, with a relation (non linear, but locally linealizable) respect to the measurable variable. We study, as guide example, the evolution of a variable that measures, in a neural network of type Hopfield attractors, the adjustment between the conditions of a subnetwork associated with the recognition of some patterns, after a quantity prearranged of iterations.

          Related collections

          Most cited references9

          • Record: found
          • Abstract: found
          • Article: not found

          The p300: where in the brain is it produced and what does it tell us?

          Intracranial recordings, lesion studies, and the combination of functional imaging with source analysis have produced a solid body of evidence about the generators of the P300 event-related potential. Although it is impossible to square all findings obtained across and within methodologies, a consistent pattern of generators has emerged, with target-related responses in the parietal cortex and the cingulate and novelty-related activations mainly in the inferior parietal and prefrontal regions. Stimulus modality-specific contributions come from the inferior temporal and superior parietal cortex for the visual and from the superior temporal cortex for the auditory modality. The P300 continues to be an important signature of cognitive processes such as attention and working memory and of its dysfunction in neurologic and mental disorders. It is increasingly being investigated as a potential genetic marker of mental disorders. Knowledge about the generators of the P300 will be crucial for a better understanding of its cognitive significance and its continuing clinical application.
            Bookmark
            • Record: found
            • Abstract: not found
            • Book: not found

            The nature of mathematical modeling

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Potenciales evocados cerebrales en el contexto de la investigación psicológica: una actualización

                Bookmark

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                rmta
                Revista de Matemática Teoría y Aplicaciones
                Rev. Mat
                Publicación del Centro de Investigaciones en Matemática Pura y Aplicada (CIMPA) (San José )
                1409-2433
                June 2011
                : 18
                : 1
                : 49-62
                Affiliations
                [1 ] Universidad Nacional de General Sarmiento Argentina
                [2 ] Universidad Nacional de General Sarmiento Argentina
                Article
                S1409-24332011000100005
                df56fc15-f457-4f2e-b4c8-398e5c7fd1b5

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Costa Rica

                Self URI (journal page): http://www.scielo.sa.cr/scielo.php?script=sci_serial&pid=1409-2433&lng=en
                Categories
                Mathematics
                Mathematics, Applied

                Applied mathematics,General mathematics
                potenciales evocados cerebrales,procesamiento de señales,filtros de Kalman,redes neuronales,neurociencia cognitiva,event related potentials,signal processing,Kalman filters,neural networks,cognitive neuroscience

                Comments

                Comment on this article