Neurons Involved in the Non-Synaptic Coordination of Motor Buccal Rhythms in Lymnaea

Previous studies have shown that one version of the coordination of the central buccal generator in the mollusk Lymnaea stagnalis with the rhythm of neuron B2, which controls esophageal motility, is associated with the occurrence of giant hyperpolarization waves on B2 neurons. The present report des...

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Published inNeuroscience and behavioral physiology Vol. 44; no. 3; pp. 292 - 300
Main Authors D’yakonova, T. L., D’yakonova, V. E.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.03.2014
Springer Nature B.V
Subjects
Behavioral Sciences
Biomedical and Life Sciences
Biomedicine
Lymnaea stagnalis
Mollusca
Neurobiology
Neurons
Neurosciences
Nitric oxide
Physiology
Rhythm
neuromodulation
volume transmission
extrasynaptic effect
central motor rhythm generator
mollusk
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Summary:Previous studies have shown that one version of the coordination of the central buccal generator in the mollusk Lymnaea stagnalis with the rhythm of neuron B2, which controls esophageal motility, is associated with the occurrence of giant hyperpolarization waves on B2 neurons. The present report describes new neurons which appear to be the source of these waves on neuron B2. Stimulation of these cells induces deep and long-lasting direct non-synaptic inhibition of neuron B2. In addition, these neurons could increase the frequency of the buccal rhythm and depolarize motoneuron B4, which plays a role in the buccal rhythm; nitric oxide increased their effects. These results provide evidence that identified neurons may coordinate motor feeding rhythms via a volume transmission mechanism.
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ISSN:0097-0549
1573-899X
DOI:10.1007/s11055-014-9909-2