Memory block: A consequence of conflict resolution

Etsuro Ito*, Miki Yamagishi, Dai Hatakeyama, Takayuki Watanabe, Yutaka Fujito, Varvara Dyakonova, Ken Lukowiak

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


Food deprivation for 1 day in the pond snail Lymnaea stagnalis before aversive classical conditioning results in optimal conditioned taste aversion (CTA) and long-term memory (LTM) formation, whereas 5-day food deprivation before training does not. We hypothesize that snails do in fact learn and form LTMwhen trained after prolonged food deprivation, but that severe food deprivation blocks their ability to express memory. We trained 5-day food-deprived snails under various conditions, and found that memory was indeed formed but is overpowered by severe food deprivation. Moreover, CTA-LTM was context dependent and was observed only when the snails were in a context similar to that in which the training occurred.

Original languageEnglish
Pages (from-to)1699-1704
Number of pages6
JournalJournal of Experimental Biology
Issue number11
Publication statusPublished - 2015 Jun 1
Externally publishedYes


  • Conditioned taste aversion
  • Context
  • Food deprivation
  • Long-term memory
  • Lymnaea

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Physiology
  • Aquatic Science
  • Animal Science and Zoology
  • Molecular Biology
  • Insect Science


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