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Neuropeptide fusion of two motor-pattern generator circuits

Neuropeptide fusion of two motor-pattern generator circuits

Nature volume 344, pages 155–158 (1990)Cite this article

Abstract

ANIMALS make many different movements as circumstances dictate. These movements often involve the coordination of several neural networks, the output of which can be changed by modulatory substances1–4. Here we report that the neuropeptide red pigment concentrating hormone modulates the interactions between two rhythmic pattern-generating networks in the lobster stomatogastric nervous system. Red pigment concentrating hormone markedly enhances the amplitude of synaptic interactions between elements of two pattern-generating networks—the cardiac sac and the gastric mill. Consequently, two networks operating under some circumstances virtually independently can be fused into one functional unit operating differently from either of the two original networks. These results show how a neuropeptide can alter the functional configuration of a neural network so that widely disparate outputs can be produced by the same neurons.

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Author information Authors and Affiliations

  1. Biology Department, Bowdoin College, Brunswick, Maine, 04011, USA

    Patsy S. Dickinson & Carol Mecsas

  2. Biology Department, Brandeis University, Waltham, Massachusetts, 02254, USA

    Eve Marder

Authors
  1. Patsy S. Dickinson
  2. Carol Mecsas
  3. Eve Marder
About this article Cite this article

Dickinson, P., Mecsas, C. & Marder, E. Neuropeptide fusion of two motor-pattern generator circuits. Nature 344, 155–158 (1990). https://doi.org/10.1038/344155a0

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