6352
2011
eng
article
1
2013-01-11
--
--
A Combined Perceptual, Physico-Chemical, and ImagingApproach to ‘Odour-Distances’ Suggests a CategorizingFunction of the Drosophila Antennal Lobe
How do physico-chemical stimulus features, perception, and physiology relate? Given the multi-layered and parallel architecture of brains, the question specifically is where physiological activity patterns correspond to stimulus features and/ or perception. Perceived distances between six odour pairs are defined behaviourally from four independent odour recognition tasks. We find that, in register with the physico-chemical distances of these odours, perceived distances for 3-octanol and n-amylacetate are consistently smallest in all four tasks, while the other five odour pairs are about equally distinct. Optical imaging in the antennal lobe, using a calcium sensor transgenically expressed in only first-order sensory or only second-order olfactory projection neurons, reveals that 3-octanol and n-amylacetate are distinctly represented in sensory neurons, but appear merged in projection neurons. These results may suggest that within-antennal lobe processing funnels sensory signals into behaviourally meaningful categories, in register with the physico-chemical relatedness of the odours.
urn:nbn:de:bvb:20-opus-74769
7476
In: PLoS ONE 6(9): e24300. doi:10.1371/journal.pone.0024300
Thomas Niewalda
Thomas Völler
Claire Eschbach
Julia Ehmer
Wen-Chuang Chou
Marc Timme
André Fiala
Bertram Gerber
deu
swd
Drosophila Antennal Lobe
Biowissenschaften; Biologie
open_access
Theodor-Boveri-Institut für Biowissenschaften
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/6352/Gerber_journal.pone.0024300.pdf
13351
2011
eng
e24300
9
6
article
1
2016-05-13
--
--
A Combined Perceptual, Physico-Chemical, and Imaging Approach to 'Odour-Distances' Suggests a Categorizing Function of the Drosophila Antennal Lobe
How do physico-chemical stimulus features, perception, and physiology relate? Given the multi-layered and parallel architecture of brains, the question specifically is where physiological activity patterns correspond to stimulus features and/or perception. Perceived distances between six odour pairs are defined behaviourally from four independent odour recognition tasks. We find that, in register with the physico-chemical distances of these odours, perceived distances for 3octanol and n-amylacetate are consistently smallest in all four tasks, while the other five odour pairs are about equally distinct. Optical imaging in the antennal lobe, using a calcium sensor transgenically expressed in only first-order sensory or only second-order olfactory projection neurons, reveals that 3-octanol and n-amylacetate are distinctly represented in sensory neurons, but appear merged in projection neurons. These results may suggest that within-antennal lobe processing funnels sensory signals into behaviourally meaningful categories, in register with the physico-chemical relatedness of the odours.
PLoS One
10.1371/journal.pone.0024300
urn:nbn:de:bvb:20-opus-133510
PLoS ONE 6(9): e24300. doi:10.1371/journal.pone.0024300
Thomas Niewalda
Thomas Völler
Claire Eschbach
Julia Ehmer
Chou Wen-Chuang
Marc Timme
André Fiala
Bertram Gerber
eng
uncontrolled
organization
eng
uncontrolled
cameleon
eng
uncontrolled
honeybee
eng
uncontrolled
map
eng
uncontrolled
neurons
eng
uncontrolled
reveals
eng
uncontrolled
melanogaster
eng
uncontrolled
mushroom body
eng
uncontrolled
spatial representation
eng
uncontrolled
olfactory information
Biowissenschaften; Biologie
open_access
Theodor-Boveri-Institut für Biowissenschaften
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/13351/002_Niewalda_PLOS-ONE.pdf