Perceptual Interactions in Odour Mixtures: Odour Quality in Binary Mixtures of Woody and Fruity Wine Odorants

Atanasova, Boriana; Thomas‐Danguin, Thierry; Chabanet, Claire; Langlois, Dominique; Nicklaus, Sophie; Étiévant, P. X.

doi:10.1093/chemse/bji016

Cited by 79 publications

(68 citation statements)

References 24 publications

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“…We set out to find which concentrations of odorants allowed for the balanced perception of the odors carried by odorants C (guaiacol, CAS # 90-05-1, smoky odor) and D (isoamyl acetate, CAS # 123-92-2, banana odor) in the CD nonblending mixture (on the basis of Atanasova et al, 2005). We also checked for the appropriateness of the terms that described the odors of C (smoky) and D (banana).…”

Section: Preliminary Studymentioning

confidence: 99%

Experience shapes our odor perception but depends on the initial perceptual processing of the stimulus

Sinding

Coureaud

Bervialle

et al. 2015

Atten Percept Psychophys

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The questions of whether configural and elemental perceptions are competitive or exclusive perceptual processes and whether they rely on independent or dependent mechanisms are poorly understood. To examine these questions, we modified perceptual experience through preexposure to mixed or single odors and measured the resulting variation in the levels of configural and elemental perception of target odor mixtures. We used target mixtures that were spontaneously processed in a configural or an elemental manner. The AB binary mixture spontaneously involved the configural perception of a pineapple odor, whereas component A smelled like strawberry and component B smelled like caramel. The CD mixture produced the elemental perceptions of banana (C) and smoky (D) odors. Perceptual experience was manipulated through repeated exposure to either a mixture (AB or CD) or the components (A and B or C and D). The odor typicality rating data recorded after exposure revealed different influences of experience on odor mixtures and single-component perception, depending both on the type of exposure (components or mixture) and the mixture's initial perceptual property (configural or elemental). Although preexposure to A and B decreased the pineapple typicality of the configural AB mixture, preexposure to AB did not modify its odor quality. In contrast, preexposure to the CD elemental mixture induced a quality transfer between the components. These results emphasize the relative plasticity of odor mixture perception, which is prone to experience-induced modulations but depends on the stimulus's initial perceptual properties, suggesting that configural and elemental forms of odor mixture perception rely on rather independent processes.

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Section: Preliminary Studymentioning

confidence: 99%

Experience shapes our odor perception but depends on the initial perceptual processing of the stimulus

Sinding

Coureaud

Bervialle

et al. 2015

Atten Percept Psychophys

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“…The fact that only apparent affinities are known does not affect the present discussion. However, differences in transport (Atanasova et al, 2005) or enzymatic deactivation of the odorants in the mucus might also change the ratio r at the vicinity of the ORs with respect to the ratio in the air, the only one which is presently known. Such a change of r would modify the predicted EC 50 and maximum response.…”

Section: Predictable and Unpredictable Responses To Binary Mixturesmentioning

confidence: 99%

Competitive and Noncompetitive Odorant Interactions in the Early Neural Coding of Odorant Mixtures

Rospars¹,

Lánský²,

Chaput³

et al. 2008

J. Neurosci.

168

231

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Most olfactory receptor neurons (ORNs) express a single type of olfactory receptor that is differentially sensitive to a wide variety of odorant molecules. The diversity of possible odorant-receptor interactions raises challenging problems for the coding of complex mixtures of many odorants, which make up the vast majority of real world odors. Pure competition, the simplest kind of interaction, arises when two or more agonists can bind to the main receptor site, which triggers receptor activation, although only one can be bound at a time. Noncompetitive effects may result from various mechanisms, including agonist binding to another site, which modifies the receptor properties at the main binding site. Here, we investigated the electrophysiological responses of rat ORNs in vivo to odorant agonists and their binary mixtures and interpreted them in the framework of a quantitative model of competitive interaction between odorants. We found that this model accounts for all concentration-response curves obtained with single odorants and for about half of those obtained with binary mixtures. In the other half, the shifts of curves along the concentration axis and the changes of maximal responses with respect to model predictions, indicate that noncompetitive interactions occur and can modulate olfactory receptors. We conclude that, because of their high frequency, the noncompetitive interactions play a major role in the neural coding of natural odorant mixtures. This finding implies that the CNS activity caused by mixtures will not be easily analyzed into components, and that mixture responses will be difficult to generalize across concentration.

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“…Mixtures AC and BC included 0.5ϫ10 -5 g ml -1 of odorant A or B, and 0.5ϫ10 -5 g ml -1 of odorant C, respectively. This 50:50 v/v ratio was chosen since it does not generate any blending phenomenon in humans (Atanasova et al, 2005) (unpublished preliminary data confirmed the heterogeneous perception of this mixture, i.e. the perception of both components at this ratio).…”

Section: Odorantsmentioning

confidence: 99%

“…For example, this effect could arise if the novel odour reduces the perceived intensity of the conditioned one (Linster and Smith, 1999). In experiment 1, we therefore tested the ability of rabbit newborns to generalize from one odorant to a binary mixture, but using heterogeneous mixtures (AC or BC) in which blending do not occur in humans (Atanasova et al, 2005). In other words, we assessed whether pups respond to AC or BC after the learning of A or B, or conversely if the perception of the new element (C) inhibits the generalization.…”

Section: Introductionmentioning

confidence: 99%

Elemental and configural processing of odour mixtures in the newborn rabbit

Coureaud

Hamdani

Schaal

et al. 2009

Journal of Experimental Biology

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SUMMARYThe processing of odour mixtures by young organisms is poorly understood. Recently, the perception of an AB mixture, known to engage configural perception in adult humans, was suggested also to be partially configural in newborn rabbits. In particular, pups did not respond to AB after they had learned A or B. However, two alternative hypotheses might be suggested to explain this result: the presence in the mixture of a novel odorant that inhibits the response to the learned stimulus, and the unevenness of the sensory and cognitive processes engaged during the conditioning and the behavioural testing. We conducted four experiments to explore these alternative hypotheses. In experiment 1, the learning of A or B ended in responses to mixtures including a novel odorant (AC or BC). Experiment 2 pointed to the absence of overshadowing. Therefore, a novelty effect cannot explain the non-response to AB after the learning of A or B. In experiment 3, pups having learned A or B in AC or BC did not respond to AB. However, they generalized odour information acquired in AB to AC or BC in experiment 4. Thus, the balancing of the perceptual tasks between the conditioning and retention test does not enhance the response to the AB mixture. To sum up, the present experiments give concrete support to the partially configural perception of specific odour mixtures by newborn rabbits.

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Perceptual Interactions in Odour Mixtures: Odour Quality in Binary Mixtures of Woody and Fruity Wine Odorants

Cited by 79 publications

References 24 publications

Experience shapes our odor perception but depends on the initial perceptual processing of the stimulus

Experience shapes our odor perception but depends on the initial perceptual processing of the stimulus

Competitive and Noncompetitive Odorant Interactions in the Early Neural Coding of Odorant Mixtures

Elemental and configural processing of odour mixtures in the newborn rabbit

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