Operant Conditioning of Escape Behavior in the Pond Snail, Lymnaea stagnalis

Suguru Kobayashi, Satoshi Kojima, Mari Yamanaka, Hisayo Sadamoto, Hiroshi Nakamura, Yutaka Fujito, Ryo Kawai, Manabu Sakakibara, Etsuro Ito*

*この研究の対応する著者

研究成果: Article査読

26 被引用数 (Scopus)

抄録

Operant conditioning that the pond snail, Lymnaea stagnalis, suppressed its naturally occurring behavior of escape from a water tank was examined by using a negative reinforcement (i.e. an aversive stimulus) prepared outside the tank. During the training period, the number of escapes from a tank was strongly suppressed. One of behavioral factors for this suppression was confirmed as the elongation of latency to the first escape after training. The effects on the memory retention were examined in the massed and spaced training procedures. The latter procedure interposes a rest interval between three sets of 20-min training sessions, whereas the former has the same number of training sessions with no rest interval within 60 min. The memory retention by the massed training was observed within 20 min after training. By the spaced training, the learning acquisition was found to be stronger, which was observed as the slower latency to the first escape, than by the massed training, but the longer-lasting memory retention, which had been expected first, was not formed. These results suggest that once Lymnaea recognize the external environment is safe after training, they may extinguish their memory of the past situation quickly, resulting in no or very little difference in the memory retention by two different training procedures in this operant conditioning. Together with the facts that classical conditioning and its neuronal mechanisms in Lymnaea were previously clarified, the present findings may help to address not only the neuronal basis of operant conditioning but also the relation between classical and operant conditioning.

本文言語English
ページ(範囲)683-690
ページ数8
ジャーナルZoological Science
15
5
DOI
出版ステータスPublished - 1998 10
外部発表はい

ASJC Scopus subject areas

  • 動物科学および動物学

フィンガープリント

「Operant Conditioning of Escape Behavior in the Pond Snail, Lymnaea stagnalis」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル