An automated learning apparatus for classical conditioning of Lymnaea stagnalis

Satoshi Takigami, Hiroshi Sunada, Ken Lukowiak, Etsuro Ito, Manabu Sakakibara*


研究成果: Article査読

7 被引用数 (Scopus)


Background: The pond snail Lymnaea stagnalis is capable of taste avoidance classical conditioning (TAC) with sucrose as the conditional stimulus (CS) and mechanical prodding as the unconditional stimulus (US). After successful training, feeding behavior is significantly suppressed in response to CS presentation. New method: An automated apparatus is described for the training of multiple snails up to 10 snails at the same time. The new apparatus employs an electrical shock obtained from a 9-V dry cell to deliver a consistent and effective current amplitude of 0.4 μA (i.e., the US). Results: Using this apparatus, 10 snails can be conditioned simultaneously. We found that the optimal parameters to result in both short (STM) and long-term memory (LTM) were 15 paired presentations of the CS and US with a 5-min inter-trial interval (ITI) and 0.2-s current duration. However, both STM and LTM were observed with other ITIs tested. Successful TAC with only a single pairing of the CS-US occurred with a CS of 100 mM sucrose solution for 60 s followed by a US of 9 V with 0.4 μA for 5 s. Comparison with existing method: The use of automated training apparatus for TAC will enable us to better examine the relationship between strength of CS and US.

ジャーナルJournal of Neuroscience Methods
出版ステータスPublished - 2016 2月 1

ASJC Scopus subject areas

  • 神経科学(全般)


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