Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/5762
Título: | Robust persistent activity in neural fields with asymmetric connectivity |
Autor(es): | Horta, Cláudia Erlhagen, Wolfram |
Palavras-chave: | Neural field Bistability Working memory Spatial orientation |
Data: | Jun-2006 |
Editora: | Elsevier Science |
Revista: | Neurocomputing |
Citação: | "Neurocomputing". ISSN 0925-2312. 69:10-12 (June 2006) 1141-1145. |
Resumo(s): | Modeling studies have shown that recurrent interactions within neural networks are capable of self-sustaining non-uniform activity profiles. These patterns are thought to be the neural basis of working memory. However, the lack of robustness challenge this view as already small deviations from the assumed interaction symmetry destroy the attractor state. Here we analyze attractor states of a neural field model composed of bistable neurons. We show the existence of self-stabilized patterns that robustly represent the cue position in the presence of a substantial asymmetry in the connection profile. Using approximation techniques we derive an explicit expression for a threshold value describing the transition to a traveling activity wave. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/5762 |
DOI: | 10.1016/j.neucom.2005.12.062 |
ISSN: | 0925-2312 |
Versão da editora: | http://dx.doi.org/10.1016/j.neucom.2005.12.062 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | Offmath - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Horta_CNS05.pdf | 280,18 kB | Adobe PDF | Ver/Abrir |