Design implementation of a biologically realistic olfactory cortex in analog VLSI

• Tipo: Artigo em Revista Científica Internacional
• Data: 2001

Autores

Principe, JC (Autor) Outra; Vítor Grade Tavares (Autor) FEUP; Harris, JG (Autor) Outra; Freeman, WJ (Autor) Outra

Revista

Título: Proceedings of the IEEE

Vol. 89

Páginas: 1030-1051

ISSN: 0018-9219

Editora: IEEE

Indexação

Scopus - 54 Citações

Outras Informações

ID Authenticus: P-008-PBC

DOI: 10.1109/5.939813

Abstract (EN): This paper reviews the problem of translating signals into symbols preserving maximally the information contained in the signal time structure. In this context, we motivate the use of nonconvergent dynamics for the signal to symbol translator. We then describe a biologically realistic model of the olfactory system proposed by Walter Freeman that has locally stable dynamics but is globally chaotic. We show how we can discretize Freemans model using digital signal processing techniques, providing an alternative to the more conventional Runge-Kutta integration. This analysis leads to a direct mixed-signal {analog amplitude/discrete time) implementation of the dynamical building block that simplifies the implementation of the interconnect. We present results of simulations and measurements obtained from a fabricated analog very large scale integration (VLSI) chip. © 2001 IEEE.

Idioma: Inglês

Tipo (Avaliação Docente): Científica