Bump competition and lattice solutions in two-dimensional neural fields.

Romeo, August; Supèr, Hans

Romeo, August; Supèr, Hans.

Afiliación

Romeo A; Department of Cognition, Development and Educational Psychology, Faculty of Psychology, University of Barcelona, Spain.
Supèr H; Department of Cognition, Development and Educational Psychology, Faculty of Psychology, University of Barcelona, Spain; Institut de Neurociències, University of Barcelona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Spain. Electronic address: hans.super@icrea.cat.

Neural Netw ; 94: 141-158, 2017 Oct.

Article en En | MEDLINE | ID: mdl-28779599

RESUMEN

Some forms of competition among activity bumps in a two-dimensional neural field are studied. First, threshold dynamics is included and rivalry evolutions are considered. The relations between parameters and dominance durations can match experimental observations about ageing. Next, the threshold dynamics is omitted from the model and we focus on the properties of the steady-state. From noisy inputs, hexagonal grids are formed by a symmetry-breaking process. Particular issues about solution existence and stability conditions are considered. We speculate that they affect the possibility of producing basis grids which may be combined to form feature maps.

Asunto(s)

Redes Neurales de la Computación

Palabras clave

Bumps; Lattice; Neural field models; Self-organization

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Redes Neurales de la Computación Idioma: En Revista: Neural Netw Asunto de la revista: NEUROLOGIA Año: 2017 Tipo del documento: Article País de afiliación: España Pais de publicación: Estados Unidos

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