A Potential Mechanism for Spontaneous Oscillatory Activity in the Degenerative Mouse Retina

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9886)

Abstract

Spontaneous oscillation, which does not occur in the normal retina, is observed in the retina of the retinal degeneration mutant rd1 mouse, and provides insight into some details of the retinal network. The simple model by Trenholm et al. (2012) explained a mechanism for the oscillation, but it is not clear whether this mechanism functions for a larger, real network. To explore important factors for such an oscillatory network, we constructed a computational model of the AII amacrine cell (AII-AC) network and investigated the factors that affected the AII-AC network state by the varying model parameters, such as the degree of hyperpolarization of AII-ACs, the connection range, and others. Our results revealed two major tendencies: the AII-AC network exhibited oscillation when AII-ACs were hyperpolarized sufficiently, and when the AII-AC network was made sparse. These results suggest that dysfunction of photoreceptor cells could prevent formation of the correct AII-AC network.

Keywords

Retina AII amacrine cell Spontaneous oscillation 

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Kanako Taniguchi
    • 1
  • Chieko Koike
    • 2
  • Katsunori Kitano
    • 1
  1. 1.Department of Human and Computer IntelligenceRitsumeikan UniversityKyotoJapan
  2. 2.College of Pharmaceutical SciencesRitsumeikan UniversityKusatsuJapan

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