Proportion of Odorants Impacts the Configural versus Elemental Perception of a Binary Blending Mixture in Newborn Rabbits
Processing of odor mixtures by neonates is weakly understood. Previous studies showed that a binary mixture of ethyl isobutyrate/ethyl maltol (odorants A/B) blends in newborn rabbits at the 30/70 ratio: Pups would perceive a configural odor in addition to the components' odors. Here, we investi...
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Published in | Chemical senses Vol. 36; no. 8; pp. 693 - 700 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Oxford University Press
01.10.2011
Oxford University Press (OUP) |
Subjects | |
Online Access | Get full text |
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Summary: | Processing of odor mixtures by neonates is weakly understood. Previous studies showed that a binary mixture of ethyl isobutyrate/ethyl maltol (odorants A/B) blends in newborn rabbits at the 30/70 ratio: Pups would perceive a configural odor in addition to the components' odors. Here, we investigated whether the emergence of this additional odor in AB is determined by specific ratio(s) of A and B. To that goal, we tested whether pups discriminated between AB mixtures with lower (A−B, 8/92 ratio) or higher (A+B, 68/32) proportion of A. In Experiment 1, pups conditioned to A (or B) responded to A−B and A+B but not to AB. In Experiment 2, pups responded to A−B after learning of A− (and to A+B after learning of A+) but not to AB. In Experiment 3, after conditioning to A−B pups responded to A− and B (and to A+ and B after learning of A+B) but not or less to AB. In Experiment 4, pups responded to A−B and A+B after conditioning to AB. These results confirm the configural perception of certain odor mixtures by young organisms and reveal that the proportion of components is a key factor influencing their coding, recognition, and discrimination of complex stimuli. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0379-864X 1464-3553 |
DOI: | 10.1093/chemse/bjr049 |