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The Dual Role of Calcium in Synaptic Plasticity at the Motor Endplate

  • Samuel R. H. Joseph
  • Volker Steuber
  • David J. Willshaw

Abstract

Focal blockade of postsynaptic acetylcholine receptors (AChRs) in a small region of the neuromuscular junction may cause long-term synapse elimination at that site. Blockade of the whole junction does not cause synapse loss, indicating that it is the contrast in postsynaptic activity between the blocked and unblocked regions which causes withdrawal of the synaptic terminals. This phenomenon can be explained by the dual role of calcium, both in controlling AChR gene transcription and influencing AChR aggregation. A computational model is provided and the stability of the solutions is confirmed by theoretical analysis and computer simulation.

Keywords

Synaptic Plasticity Neuromuscular Junction Postsynaptic Activity Motor Endplate Synapse Loss 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Samuel R. H. Joseph
    • 1
  • Volker Steuber
    • 1
  • David J. Willshaw
    • 1
  1. 1.Centre for Neural Systems Centre for Cognitive ScienceEdinburgh UniversityEdinburghScotland, UK

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