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Information flow through neural circuits for pheromone orientation

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  • Shigehiro Namiki

    (Research Center for Advanced Science and Technology, University of Tokyo
    Graduate School of Life and Environmental Sciences, University of Tsukuba
    Present address: Janelia Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, Virginia 20147, USA)

  • Satoshi Iwabuchi

    (Graduate School of Life and Environmental Sciences, University of Tsukuba)

  • Poonsup Pansopha Kono

    (Graduate School of Information Science and Technology, University of Tokyo)

  • Ryohei Kanzaki

    (Research Center for Advanced Science and Technology, University of Tokyo
    Graduate School of Information Science and Technology, University of Tokyo)

Abstract

Moths use a sophisticated olfactory navigation strategy for resource localization. Here we investigate the neuronal circuits involved in sensory processing to generate locomotor commands for pheromone-source orientation in the moth. We identify a candidate pathway for pheromone processing in the protocerebrum using a mass-staining technique. Our intracellular recordings of pheromone responsiveness detect four major circuits, including a newly identified unstructured neuropil, the superior medial protocerebrum, which supplies output to the lateral accessory lobe (LAL), the premotor centre for walking commands. Interneurons innervating the lower division of the LAL elicited longer responses than those innervating the upper division. Descending interneurons innervating the lower division of the LAL showed a state-dependent flip-flop response. In contrast, input from other visual areas in the protocerebrum mostly converge onto the upper division of the LAL. These results reveal the basic organization of the LAL: the upper division is identified as a protocerebral hub that receives inputs from various areas, while the lower division generates long-lasting activity for locomotor command.

Suggested Citation

  • Shigehiro Namiki & Satoshi Iwabuchi & Poonsup Pansopha Kono & Ryohei Kanzaki, 2014. "Information flow through neural circuits for pheromone orientation," Nature Communications, Nature, vol. 5(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6919
    DOI: 10.1038/ncomms6919
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    Cited by:

    1. Sophie Aimon & Takeo Katsuki & Tongqiu Jia & Logan Grosenick & Michael Broxton & Karl Deisseroth & Terrence J Sejnowski & Ralph J Greenspan, 2019. "Fast near-whole–brain imaging in adult Drosophila during responses to stimuli and behavior," PLOS Biology, Public Library of Science, vol. 17(2), pages 1-31, February.

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