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A Quantal Analysis of the Synaptic Depression Underlying Habituation of the Gill-Withdrawal Reflex in Aplysia

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Castellucci, Vincent F., Kandel, Eric R.·1974·Proceedings of the National Academy of Sciences

Abstract

Habituation, one of the simplest behavioral paradigms for studying memory, has recently been examined on the cellular level in the gill-withdrawal reflex in the mollusc Aplysia and in the escape response in cray-fish. In both cases short-term habituation involved a decrease in excitatory synaptic transmission at the synapses between the sensory neurons and their central target cells. To analyze the mechanisms of the synaptic depression in Aplysia , we applied a quantal analysis to synaptic transmission between the sensory and motor neurons of the gill-withdrawal reflex. Our results indicate that short-term habituation results from a presynaptic mechanism: a decrease in the number of transmitter quanta released per impulse. The sensitivity of the postsynaptic receptor remains unaltered.

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Metadata

Authors
Castellucci, V. F., & Kandel, E. R.
Venue
Proceedings of the National Academy of Sciences
Published
1974-12
Volume
71
Issue
12
Pages
5004-5008
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2045370197
Cited by
316
References
1
FWCI
2.57
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A Quantal Analysis of the Synaptic Depression Underlying Habituation of the Gill-Withdrawal Reflex in Aplysia. https://app.cochat.ai/papers/10.1073/pnas.71.12.5004
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Castellucci, V. F., & Kandel, E. R. (1974). A Quantal Analysis of the Synaptic Depression Underlying Habituation of the Gill-Withdrawal Reflex in Aplysia. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.71.12.5004

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