Habituation and dishabituation mediated by the peripheral and central neural circuits of the siphon of Aplysia.

Journal of Neurobiology
K Lukowiak, J W Jacklet

Abstract

The siphon withdrawal response evoked by a weak tactile (water drop) or light stimulus is mediated primarily by neurons in the siphon. Central neurons (abdominal ganglion) contribute very little since the response amplitude and latency are not changed following removal of the abdominal ganglion. Similarly, habituation and dishabituation of this withdrawal response are not different after removal of the abdominal ganglion, indicating that the peripheral neural circuit in the isolated siphon can mediate habituation itself, and thus has many of the properties attributed to central neurons. Response evoked by electrical stimulation of the siphon nerve habituate, depending upon the stimulus intensity and interval. These habituated responses may be dishabituated by tactile or light stimulation of the siphon. These results show that each neural system, peripheral and central, has an excitatory modulatory influence on the other. Normally adaptive siphon responses must be shaped by the integrated activity of both of these neural systems.

References

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Citations

Mar 1, 1977·Proceedings of the National Academy of Sciences of the United States of America·J W Jacklet, J Rine
Jul 15, 2009·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Satomi ChikenMakoto Kurokawa

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