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Nat Commun

Title:		Information flow through neural circuits for pheromone orientation
Author(s):		Namiki S; Iwabuchi S; Pansopha Kono P; Kanzaki R;
Address:		"1] Research Center for Advanced Science and Technology, University of Tokyo, Meguro, Tokyo 153-8904, Japan [2] Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennodai, Ibaraki 305-8573, Japan. Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennodai, Ibaraki 305-8573, Japan. Graduate School of Information Science and Technology, University of Tokyo, Hongo, Tokyo 113-8656, Japan. 1] Research Center for Advanced Science and Technology, University of Tokyo, Meguro, Tokyo 153-8904, Japan [2] Graduate School of Information Science and Technology, University of Tokyo, Hongo, Tokyo 113-8656, Japan"
Journal Title:		Nat Commun
Year:		2014
Volume:		20141223
Issue:
Page Number:		5919 -
DOI:		10.1038/ncomms6919
ISSN/ISBN:		2041-1723 (Electronic) 2041-1723 (Linking)
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"
Keywords:		Animals Brain/physiology Interneurons/physiology Moths/*physiology Olfactory Pathways Pheromones/*metabolism Smell;
Notes:		"MedlineNamiki, Shigehiro Iwabuchi, Satoshi Pansopha Kono, Poonsup Kanzaki, Ryohei eng Research Support, Non-U.S. Gov't England 2014/12/24 Nat Commun. 2014 Dec 23; 5:5919. doi: 10.1038/ncomms6919"