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Short-term synaptic plasticity.

Robert S Zucker1, Wade G Regehr

  • 1Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, USA. zucker@socrates.berkeley.edu

Annual Review of Physiology
|February 5, 2002
PubMed
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Short-term synaptic plasticity, including enhancement and depression, shapes neural network activity. These dynamic changes, driven by factors like calcium ions and vesicle availability, are crucial for information processing.

Area of Science:

  • Neuroscience
  • Synaptic Plasticity

Background:

  • Synaptic transmission is dynamic, with postsynaptic responses changing based on prior activity.
  • Short-term synaptic changes (lasting minutes) significantly influence neural network properties.

Purpose of the Study:

  • To review short-term synaptic plasticity, focusing on enhancement and depression.
  • To explore the molecular mechanisms and contributing factors behind these synaptic changes.

Main Methods:

  • Literature review of synaptic plasticity mechanisms.
  • Discussion of evidence for calcium's role in synaptic enhancement.
  • Analysis of vesicle depletion models for synaptic depression.

Main Results:

  • Synaptic enhancement (facilitation, augmentation, potentiation) linked to residual presynaptic calcium.

Related Experiment Videos

  • Synaptic depression often caused by readily releasable vesicle pool depletion.
  • Other factors include presynaptic receptor activation and postsynaptic desensitization.

    • Conclusions:

    • Short-term synaptic plasticity is a complex interplay of presynaptic and postsynaptic mechanisms.
    • Understanding these dynamics is key to comprehending neural network function and information processing.