Cited by 606Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsNeurobiology and Insect Physiology Research

Long-Term Sensitization of a Defensive Withdrawal Reflex in Aplysia

Pinsker, Harold M., Hening, Wayne A., Carew, Thomas J., Kandel, Eric R.·1973·Science

Abstract

When a weak tactile stimulus is applied to the siphon of Aplysia californica, the animal withdraws the siphon between the parapodia. This defensive withdrawal reflex can be facilitated (sensitized) if the animal is previously given 4 days of training, consisting of four brief noxious stimuli each day. The sensitization of this reflex can last for up to 3 weeks after training and is mediated by the abdominal ganglion which also mediates long-term habituation. This preparation may provide a system for analyzing the neural mechanism of long-term behavioral modifications of complexity which is intermediate between habituation and associative learning.

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Crossref · 10.1126/science.182.4116.1039

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14 of 14 references verified0 citation errors · 0 not checkable

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  • In vivo, four spaced electrical stimuli with 30-minute intervals yielded LTS lasting more than 24 hours, with weak residual LTS detectable at 4 days, and repetition once per day for 4 days yielded much stronger LTS lasting more than 1 week.

    “In vivo, four spaced electrical stimuli (with 30 minutes intervals between the stimuli) yielded LTS that lasted for more than 24 hours, with weak residual LTS being detectable at 4 days post-training, and repetition of this spaced protocol once per day for 4 days yielded much stronger LTS that lasted for more than 1 week13,57,58.”
  • LTF at Aplysia californica sensorimotor synapses is associated with long-term sensitization (LTS) of withdrawal reflexes.

    “LTF at these sensorimotor synapses is associated with a simple form of learning, long-term sensitization (LTS) of withdrawal reflexes.”

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Authors
Pinsker, H. M., Hening, W. A., Carew, T. J., & Kandel, E. R.
Affiliations
NYU Langone Health (US)
Venue
Science
Published
1973-12-07
Volume
182
Issue
4116
Pages
1039-1042
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2020725767
Cited by
606
References
14
Citations by year
2026: 8 · 2025: 5 · 2024: 10 · 2023: 2 · 2022: 8 · 2021: 19 · 2020: 12 · 2019: 12 · 2018: 15 · 2017: 13 · 2016: 15 · 2015: 8 · 2014: 17 · 2013: 20 · 2012: 22
FWCI
5.72
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
Keywords
Aplysia californica, sensitization, long-term sensitization, noxious stimuli, tactile stimulation, abdominal ganglion, habituation, associative learning
MeSH terms
Animals, Ganglia, Habituation, Psychophysiologic, Mollusca, Physical Stimulation, Reflex, Startle

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