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Chemosensory interaction: acquired olfactory impairment is associated with decreased taste function
Smell and Taste Clinic, Department of Otorhinolaryngology, University of Dresden Medical School, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany .
Smell and Taste Clinic, Department of Otorhinolaryngology, University of Dresden Medical School, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany.
Smell and Taste Clinic, Department of Otorhinolaryngology, University of Dresden Medical School, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany.
Smell and Taste Clinic, Department of Otorhinolaryngology, University of Dresden Medical School, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany.
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2010 (English)In: Journal of Neurology, ISSN 0340-5354, E-ISSN 1432-1459, Vol. 257, 1303-1308 p.Article in journal (Refereed) Published
Abstract [en]

Olfaction, taste and trigeminal function are three distinct modalities. However, in daily life they are often activated concomitantly. In health and disease, it has been shown that in two of these senses, the trigeminal and olfactory senses, modification of one sense leads to changes in the other sense and vice versa. The objective of the study was to investigate whether and (if so) how, the third modality, taste, is influenced by olfactory impairment. We tested 210 subjects with normal (n = 107) or impaired (n = 103) olfactory function for their taste identification capacities. Validated tests were used for olfactory and gustatory testing (Sniffin’ Sticks, Taste Strips). In an additional experiment, healthy volunteers underwent reversible olfactory cleft obstruction to investigate shorttime changes of gustatory function after olfactory alteration. Mean gustatory identification (taste strip score) for the subjects with impaired olfaction was 19.4 ± 0.6 points and 22.9 ± 0.5 points for those with normal olfactory function (t = 4.6, p\0.001). The frequencies of both, smell and taste impairments interacted significantly (Chi2, F = 16.4, p\0.001), and olfactory and gustatory function correlated (r210 = 0.30, p\0.001). Neither age nor olfactory impairment cause effects interfered with this olfactory–gustatory interaction. In contrast, after shortlasting induced olfactory decrease, gustatory function remained unchanged. The present study suggests that longstanding impaired olfactory function is associated with decreased gustatory function. These findings seem to extend previously described mutual chemosensory interactions also to smell and taste. It further raises the question whether chemical senses in general decrease mutually after acquired damage.

Place, publisher, year, edition, pages
Springer , 2010. Vol. 257, 1303-1308 p.
Keyword [en]
Taste, Gustation, Olfaction, Interaction
National Category
Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:umu:diva-36088DOI: 10.1007/s00415-010-5513-8ISI: 000280393400011OAI: oai:DiVA.org:umu-36088DiVA: diva2:351842
Available from: 2010-09-16 Created: 2010-09-16 Last updated: 2017-12-12Bibliographically approved

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Nordin, Steven

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