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Differential odor processing in two olfactory pathways in the honeybee

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posted on 2023-06-08, 18:23 authored by Nobuhiro Yamagata, Michael SchmukerMichael Schmuker, Paul Szyszka, Makoto Mizunami, Randolf Menzel
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.

History

Publication status

  • Published

File Version

  • Published version

Journal

Frontiers in Systems Neuroscience

ISSN

1662-5137

Publisher

Frontiers

Volume

3

Page range

16

Department affiliated with

  • Informatics Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2014-09-23

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2017-03-09

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