Stabilization of mauthner neuron structure on adaptation of goldfish to contralateral optokinetic stimulation.

Neuroscience and Behavioral Physiology
N Yu TsaplinaD A Moshkov

Abstract

We have previously shown that contralateral optokinetic (visual) stimulation (COS) evokes inversion of motor asymmetry in goldfish and three-fold reductions in the volume of the ventral dendrite of the ipsilateral Mauthner neuron (MN). A training regime consisting of repeated daily sessions of COS induced resistance of the motor behavior of the fish to this treatment. We report here our studies of the effects of training sessions of COS on the structure of MN and their components. Daily visual training was found to stabilize the sizes of the dorsal dendrites of MN, significantly increasing their resistance to single prolonged sessions of COS. Thus, repeated stimulation of an individual dendrite induces an adaptive morphological state in the dendrite and in the neuron as a whole. This allows more detailed studies of the role of the individual dendrite in modifying the functional activity of the whole neuron in the mechanisms of adaptation and memory at the cellular level to be performed.

References

Jan 19, 2006·Proceedings of the National Academy of Sciences of the United States of America·Alexei V Samsonovich, Giorgio A Ascoli
Jun 27, 2007·Proceedings of the National Academy of Sciences of the United States of America·John M Bekkers, Michael Häusser
Dec 21, 2007·Nature·Arthur R Houweling, Michael Brecht

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Citations

Apr 30, 2013·Journal of Integrative Neuroscience·Dmitry A MoshkovLyubov' L Pavlik

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