English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Dose-response characteristics of glomerular activity in the moth antennal lobe

Carlsson, M., & Hansson, B. (2003). Dose-response characteristics of glomerular activity in the moth antennal lobe. Chemical Senses, 28(4), 269-278. doi:10.1093/chemse/28.4.269.

Item is

Files

show Files
hide Files
:
EXT149.pdf (Publisher version), 493KB
 
File Permalink:
-
Name:
EXT149.pdf
Description:
-
OA-Status:
Visibility:
Restricted (Max Planck Institute for Chemical Ecology, MJCO; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show
hide
Locator:
http://dx.doi.org/10.1093/chemse/28.4.269 (Publisher version)
Description:
OA
OA-Status:

Creators

show
hide
 Creators:
Carlsson, MA, Author
Hansson, Bill1, Author           
Affiliations:
1External Organizations, ou_persistent22              

Content

show
hide
Free keywords: RAT OLFACTORY-BULB; RECEPTOR NEURON INPUT; SPODOPTERA-LITTORALIS LEPIDOPTERA; SPATIAL REPRESENTATION; APIS-MELLIFERA; CONCENTRATION-INVARIANT; AGROTIS-SEGETUM; FEMALE; ODORS; ODORANTSolfaction; Spodoptera littoralis; optical imaging; plant volatile; spatial coding;
 Abstract: Odours are represented as unique combinations of activated glomeruli in the antennal lobes of insects. Receptor neurons arborizing in the glomeruli are not only qualitatively selective, but in addition respond to variations in stimulus concentration. As each glomerulus likely represents a single receptor neuron type, optical recordings of calcium changes in insect antennal lobes show how concentration variations affect a large population of afferents. We measured the glomerular responses in the moth Spodoptera littoralis to different concentrations of plant-related odorants. Localized calcium responses were shown to correspond to individual glomeruli. We found that the dynamic range of glomerular responses spanned 3-4 log units of concentration and the most strongly responding glomeruli often reached a plateau at high stimulus doses. Further, we showed that the single most active glomerulus was often not the same across concentrations. However, if the principal glomerulus moved, it was generally to an adjacent or proximal glomerulus. As concentration increased, a higher number of glomeruli became activated. Correlations of glomerular representations of the same compound at different doses decreased as the difference in concentration increased. Moreover, representations evoked by different odorants were more correlated at high than at low doses, which means that the uniqueness of activity patterns decreased with increasing concentration. Thus, if odours are coded as spatial patterns of glomerular activity, as has been suggested, these olfactory codes are not persistent across concentrations.

Details

show
hide
Language(s): eng - English
 Dates: 2003-05
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000183233900001
DOI: 10.1093/chemse/28.4.269
Other: EXT149
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Chemical Senses
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Oxford University Press [etc.]
Pages: - Volume / Issue: 28 (4) Sequence Number: - Start / End Page: 269 - 278 Identifier: ISSN: 0379-864X
CoNE: https://pure.mpg.de/cone/journals/resource/954928560444