Acta Biologica Hungarica

, Volume 59, Supplement 2, pp 93–95 | Cite as

Neurophysiological Analysis of Visuo-Vestibular Conditioning in Lymnaea stagnalis

Short Communication
  • H. Suzuki
  • T. Horikoshi
  • M. SakakibaraEmail author
Open Access


Lymnaea are capable of learning an association between light and rotation. The conditioning paradigm to produce this association and the unconditioned escape response are the same for both Lymnaea and Hermissenda, but the underlying neural mechanisms appear to differ between the two species due to differences in the organization and function of their visuo- and vestibular-sensory systems. The RPeD11 interneuron in Lymnaea controls withdrawal behavior. We analyzed the electrophysiologic characteristics of the RPeD11 and observed an increase in cell excitability; that is, spontaneous activity of the postsynaptic potential in the RpeD11 was increased in conditioned animals after learning acquisition.


Withdrawal neuron RPeD11 excitability spontaneous EPSP visuo- and vestibular conditioning Lymnaea 


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© Akadémiai Kiadó, Budapest 2008

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Course of Bioscience, Graduate School of BioscienceTokai University Unified Graduate SchoolShizuokaJapan
  2. 2.Department of Biological Science and Technology, School of High-Technology for Human WelfareTokai UniversityShizuokaJapan

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