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A Combined Perceptual, Physico-Chemical, and ImagingApproach to ‘Odour-Distances’ Suggests a CategorizingFunction of the Drosophila Antennal Lobe

Please always quote using this URN: urn:nbn:de:bvb:20-opus-74769
  • 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,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.show moreshow less

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Metadaten
Author: Thomas Niewalda, Thomas Völler, Claire Eschbach, Julia Ehmer, Wen-Chuang Chou, Marc Timme, André Fiala, Bertram Gerber
URN:urn:nbn:de:bvb:20-opus-74769
Document Type:Journal article
Faculties:Fakultät für Biologie / Theodor-Boveri-Institut für Biowissenschaften
Language:English
Year of Completion:2011
Source:In: PLoS ONE 6(9): e24300. doi:10.1371/journal.pone.0024300
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
GND Keyword:Drosophila Antennal Lobe
Release Date:2013/01/11
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung