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Related Experiment Videos

Synaptic rearrangement during postembryonic development in the cricket.

A Chiba1, D Shepherd, R K Murphey

  • 1Department of Biology, State University of New York, Albany 12222.

Science (New York, N.Y.)
|May 13, 1988
PubMed
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Synaptic rearrangement, a developmental process in nervous systems, involves changes in connection strength. This study shows synaptic plasticity occurs in invertebrates, challenging previous vertebrate-centric views.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Comparative Neurology

Background:

  • Synaptic rearrangement was previously considered a hallmark of vertebrate nervous system development.
  • This process involves changes in the strength of synaptic connections during maturation.

Purpose of the Study:

  • To investigate synaptic rearrangement in the invertebrate nervous system.
  • To determine if synaptic plasticity observed in vertebrates is also present in invertebrates.

Main Methods:

  • Examination of the wind-sensitive cercal sensory system in crickets.
  • Analysis of changes in synaptic connection strength during animal maturation.

Main Results:

  • Identified systematic decreases and increases in synaptic connection strength during cricket development.

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  • Observed a single sensory neuron modulating connection strength differently with distinct interneurons.

    • Conclusions:

    • Synaptic rearrangement is not exclusive to the vertebrate nervous system.
    • Synaptic plasticity is likely a fundamental characteristic of nervous system development across many species.