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Olfactory discrimination of aliphatic odorants at 1 ppm : Too easy for CD-1 mice to show odor structure-activity relationships?
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- Laska, Matthias, 1960- (author)
- Linköpings universitet,Tekniska högskolan,Zoologi
- Rosandher, Å. (author)
- Hommen, S. (author)
- (creator_code:org_t)
- 2008-09-23
- 2008
- English.
- In: Journal of Comparative Physiology A. Sensory, neural, and behavioral physiology. - : Springer Science and Business Media LLC. - 0340-7594 .- 1432-1351. ; 194:11, s. 971-980
- Journal article (peer-reviewed)
Abstract
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- Using an operant conditioning paradigm we tested the ability of CD-1 mice to discriminate between 25 odorants comprising members of five homologous series of aliphatic odorants (C4-C8) presented at a gas phase concentration of 1 ppm. We found (a) that all mice significantly discriminated between all 50 stimulus pairs that involved odorants sharing the same functional group, but differing in carbon chain length, as well as between all 50 stimulus pairs that involved odorants sharing the same carbon chain length but differing in functional group, (b) a significant negative correlation between discrimination performance and structural similarity of odorants in terms of differences in carbon chain length with the acetic esters and the 2-ketones, but not with the 1-alcohols, n-aldehydes, and n-carboxylic acids tested, and (c) that odorant pairs differing in functional group were significantly better discriminated than odorant pairs differing in carbon chain length. These findings demonstrate that CD-1 mice have excellent discrimination ability for structurally related aliphatic odorants, that correlations between discrimination performance and structural similarity of odorants are odorant class-specific rather than a general phenomenon, and that both carbon chain length and type of functional group play an important role for odor quality coding in mice. © 2008 Springer-Verlag.
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- NATURAL SCIENCES
- NATURVETENSKAP
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