Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69738
Título: | Numerical analysis of the shape of bump solutions in a neuronal model of working memory |
Autor(es): | Wojtak, Weronika Ferreira, Flora José Rocha Bicho, Estela Erlhagen, Wolfram |
Data: | 1-Jan-2019 |
Editora: | AIP Publishing |
Revista: | AIP Conference Proceedings |
Resumo(s): | Neural field models, formalized by integro-differential equations, describe the large-scale spatio-temporal dynamics of neuronal populations [1]. They have been used in the past as a framework for modeling a wide range of brain functions, including multi-item working memory [2]. Neural field equations support spatially localized regions of high activity (or bumps) that are initially triggered by brief sensory inputs and subsequently become self-sustained by recurrent interactions within the neural population. We apply a special class of oscillatory coupling functions and analyze how the shape and spatial extension of multi-bump solutions change as the spatial ranges of excitation and inhibition within the field are varied [3]. More precisely, we use numerical continuation to find and follow solutions of neural field equations as the parameter controlling the distance between consecutive zeros of the coupling function is varied [4]. Important for a working memory application (e.g. [5]), we investigate how changes in this parameter affect the shape of bump solutions and therefore the maximum number of bumps that may exist in a given finite interval. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/69738 |
ISBN: | 9780735418547 |
DOI: | 10.1063/1.5114243 |
ISSN: | 0094-243X |
Versão da editora: | https://aip.scitation.org/doi/abs/10.1063/1.5114243 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito autor |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Numerics_Bump_Solutions_WW_et_al_2019.pdf Acesso restrito! | 497,22 kB | Adobe PDF | Ver/Abrir |