Differential odor processing in two olfactory pathways in the honeybee

Yamagata, Nobuhiro, Schmuker, Michael, Szyszka, Paul, Mizunami, Makoto and Menzel, Randolf (2009) Differential odor processing in two olfactory pathways in the honeybee. Frontiers in systems neuroscience, 3. p. 16. ISSN 1662-5137

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Abstract

An important component in understanding central olfactory processing and coding in the insect brain relates to the characterization of the functional divisions between morphologically distinct types of projection neurons (PN). Using calcium imaging, we investigated how the identity, concentration and mixtures of odors are represented in axon terminals (boutons) of two types of PNs - lPN and mPN. In lPN boutons we found less concentration dependence, narrow tuning profiles at a high concentration, which may be optimized for fine, concentration-invariant odor discrimination. In mPN boutons, however, we found clear rising concentration dependence, broader tuning profiles at a high concentration, which may be optimized for concentration coding. In addition, we found more mixture suppression in lPNs than in mPNs, indicating lPNs better adaptation for synthetic mixture processing. These results suggest a functional division of odor processing in both PN types.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Subjects: Q Science
Depositing User: michael Schmuker
Date Deposited: 23 Sep 2014 12:03
Last Modified: 09 Mar 2017 06:16
URI: http://sro.sussex.ac.uk/id/eprint/50196

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