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Herz, Andreas V. M. ORCID logoORCID: https://orcid.org/0000-0002-3836-565X (1991): Global analysis of parallel analog networks with retarded feedback. In: Physical review A, Vol. 44, No. 2: pp. 1415-1418 [PDF, 158kB]


We analyze the retrieval dynamics of analog ‘‘neural’’ networks with clocked sigmoid elements and multiple signal delays. Proving a conjecture by Marcus and Westervelt, we show that for delay-independent symmetric coupling strengths, the only attractors are fixed points and periodic limit cycles. The same result applies to a larger class of asymmetric networks that may be utilized to store temporal associations with a cyclic structure. We discuss implications for various learning schemes in the space-time domain.

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