Biological Cybernetics

, Volume 67, Issue 6, pp 535–544 | Cite as

Modeling the dishabituation hierarchy: The role of the primordial hippocampus

  • DeLiang Wang
  • Michael A. Arbib
Article

Abstract

We present a neural model for the organization and neural dynamics of the medial pallium, the toad's homolog of mammalian hippocampus. A neural mechanism, called cumulative shrinking, is proposed for mapping temporal responses from the anterior thalamus into a form of population coding referenced by spatial positions. Synaptic plasticity is modeled as an interaction of two dynamic processes which simulates acquisition and both short-term and long-term forgetting. The structure of the medial pallium model plus the plasticity model allows us to provide an account of the neural mechanisms of habituation and dishabituation. Computer simulations demonstrate a remarkable match between the model performance and the original experimental data on which the dishabituation hierarchy was based. A set of model predictions is presented, concerning mechanisms of habituation and cellular organization of the medial pallium

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • DeLiang Wang
    • 1
  • Michael A. Arbib
    • 1
  1. 1.Center for Neural EngineeringUniversity of Southern CaliforniaLos AngelesUSA

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