Journal
CHEMICAL SENSES
Volume 47, Issue -, Pages -Publisher
OXFORD UNIV PRESS
DOI: 10.1093/chemse/bjac002
Keywords
chemical senses; mixture enhancement; mixture interaction; mixture suppression; olfaction; taste
Funding
- National Institutes of Health, National Science Foundation
- Whitehall Foundation
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This article aims to provide a perspective on understanding the nature of responses to chemical mixtures, focusing on olfaction and the first level of neural processing. Researchers often identify mixture interactions, which are responses to mixtures not accurately predicted from the responses to individual components. The critical aspect is how to predict responses to mixtures and thus identify mixture interactions, including beyond sensory neurons to behavior and psychophysics.
Our goal in this article is to provide a perspective on how to understand the nature of responses to chemical mixtures. In studying responses to mixtures, researchers often identify mixture interactions-responses to mixtures that are not accurately predicted from the responses to the mixture's individual components. Critical in these studies is how to predict responses to mixtures and thus to identify a mixture interaction. We explore this issue with a focus on olfaction and on the first level of neural processing-olfactory sensory neurons-although we use examples from taste systems as well and we consider responses beyond sensory neurons, including behavior and psychophysics. We provide a broadly comparative perspective that includes examples from vertebrates and invertebrates, from genetic and nongenetic animal models, and from literature old and new. In the end, we attempt to recommend how to approach these problems, including possible future research directions.
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