University of Hertfordshire

From the same journal

By the same authors

Differential odor processing in two olfactory pathways in the honeybee

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Original languageEnglish
Pages (from-to)16
JournalFrontiers in Systems Neuroscience
Journal publication date4 Dec 2009
Publication statusPublished - 4 Dec 2009
Externally publishedYes


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.

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