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Phys. Rev. E 64, 031904 (2001) [8 pages]

Fluctuation-induced memory retrieval in a pulsed neural network storing sparse patterns with hierarchical correlations

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Takashi Kanamaru
Department of Electrical and Electronic Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan

Yoichi Okabe
RCAST, The University of Tokyo, Tokyo 153-8904, Japan

Received 16 February 2001; published 28 August 2001

An associative memory in a pulsed neural network composed of the FitzHugh-Nagumo models storing sparse patterns with hierarchical correlations is investigated. The memory patterns composed of 0/1 digits are represented by the synchronous periodic firings of the neurons. It is found that the target pattern and the OR pattern are retrieved individually by controlling the intensity of fluctuations in the system.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.64.031904
DOI:
10.1103/PhysRevE.64.031904
PACS:
87.10.+e, 05.45.-a, 84.35.+i, 07.05.Mh