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A Combined Perceptual, Physico-Chemical, and Imaging Approach to 'Odour-Distances' Suggests a Categorizing Function of the Drosophila Antennal Lobe
Please always quote using this URN: urn:nbn:de:bvb:20-opus-133510
- 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,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.…
Author: | Thomas Niewalda, Thomas Völler, Claire Eschbach, Julia Ehmer, Chou Wen-Chuang, Marc Timme, André Fiala, Bertram Gerber |
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URN: | urn:nbn:de:bvb:20-opus-133510 |
Document Type: | Journal article |
Faculties: | Medizinische Fakultät / Theodor-Boveri-Institut für Biowissenschaften |
Language: | English |
Parent Title (English): | PLoS One |
Year of Completion: | 2011 |
Volume: | 6 |
Issue: | 9 |
Pagenumber: | e24300 |
Source: | PLoS ONE 6(9): e24300. doi:10.1371/journal.pone.0024300 |
DOI: | https://doi.org/10.1371/journal.pone.0024300 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
Tag: | cameleon; honeybee; map; melanogaster; mushroom body; neurons; olfactory information; organization; reveals; spatial representation |
Release Date: | 2018/10/10 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung |