Accéder directement au contenu Accéder directement à la navigation
Nouvelle interface
Article dans une revue

New determinants of olfactory habituation

Abstract : Habituation is a filter that optimizes the processing of information by our brain in all sensory modalities. It results in an unconscious reduced responsiveness to continuous or repetitive stimulation. In olfaction, the main question is whether habituation works the same way for any odorant or whether we habituate differently to each odorant? In particular, whether chemical, physical or perceptual cues can limit or increase habituation. To test this, the odour intensity of 32 odorants differing in physicochemical characteristics was rated by 58 participants continuously during 120s. Each odorant was delivered at a constant concentration. Results showed odorants differed significantly in habituation, highlighting the multifactoriality of habituation. Additionally habituation was predicted from 15 physico-chemical and perceptual characteristics of the odorants. The analysis highlighted the importance of trigeminality which is highly correlated to intensity and pleasantness. The vapour pressure, the molecular weight, the Odor Activity Value (OAV) and the number of double bonds mostly contributed to the modulation of habituation. Moreover, length of the carbon chain, number of conformers and hydrophobicity contributed to a lesser extent to the modulation of habituation. These results highlight new principles involved in the fundamental process of habituation, notably trigeminality and the physicochemical characteristics associated.
Liste complète des métadonnées

Littérature citée [45 références]  Voir  Masquer  Télécharger
Contributeur : CSGA - université de Bourgogne Connectez-vous pour contacter le contributeur
Soumis le : mardi 26 septembre 2017 - 22:40:54
Dernière modification le : dimanche 26 juin 2022 - 01:54:38

Fichiers éditeurs autorisés sur une archive ouverte


Distributed under a Creative Commons Paternité 4.0 International License



Charlotte Sinding, François Valadier, Viviana Al-Hassani, Gilles Feron, Anne Tromelin, et al.. New determinants of olfactory habituation. Scientific Reports, 2017, 7 (41047), pp.41047. ⟨10.1038/srep41047⟩. ⟨hal-01477439⟩



Consultations de la notice


Téléchargements de fichiers