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Cognitive Neurodynamics

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01-12-2010 | Research Article

The modeling and simulation of visuospatial working memory

Authors: Lina Liang, Rubin Wang, Zhikang Zhang

Published in: Cognitive Neurodynamics | Issue 4/2010

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Abstract

Camperi and Wang (Comput Neurosci 5:383–405, 1998) presented a network model for working memory that combines intrinsic cellular bistability with the recurrent network architecture of the neocortex. While Fall and Rinzel (Comput Neurosci 20:97–107, 2006) replaced this intrinsic bistability with a biological mechanism-Ca²⁺ release subsystem. In this study, we aim to further expand the above work. We integrate the traditional firing-rate network with Ca²⁺ subsystem-induced bistability, amend the synaptic weights and suggest that Ca²⁺ concentration only increase the efficacy of synaptic input but has nothing to do with the external input for the transient cue. We found that our network model maintained the persistent activity in response to a brief transient stimulus like that of the previous two models and the working memory performance was resistant to noise and distraction stimulus if Ca²⁺ subsystem was tuned to be bistable.

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Title: The modeling and simulation of visuospatial working memory
Authors: Lina Liang
Rubin Wang
Zhikang Zhang
Publication date: 01-12-2010
Publisher: Springer Netherlands
Published in: Cognitive Neurodynamics / Issue 4/2010
Print ISSN: 1871-4080
Electronic ISSN: 1871-4099
DOI: https://doi.org/10.1007/s11571-010-9129-6

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