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Mapping odor valence in the brain of flies and mice.
MedLine Citation:
PMID:  24492076     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Why are some odors perceived as pleasant while others are not? We review current research on how pleasant and unpleasant odors, that is, odors with positive or negative valence, are processed in the brain of flies and mice. We conclude that in mice pleasant and unpleasant odors are detected via three olfactory subsystems with only one being fully dedicated to unpleasant odors, while the others detect both good and bad odors. Correspondingly, so far no clear segmentation into regions processing exclusively pleasant or unpleasant odors has been identified in the mouse brain. The situation is different in flies, where most odors are sensed via the antenna. Already at the antennal lobe level, that is, the first processing center for olfactory input, odorants seem to be categorized as pleasant or unpleasant. We furthermore discuss why animals at all should make a decision based on olfaction, and why a straightforward and fast processing of odorant valence might be important for survival and reproduction.
Authors:
Markus Knaden; Bill S Hansson
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Publication Detail:
Type:  REVIEW     Date:  2013-9-7
Journal Detail:
Title:  Current opinion in neurobiology     Volume:  24C     ISSN:  1873-6882     ISO Abbreviation:  Curr. Opin. Neurobiol.     Publication Date:  2014 Feb 
Date Detail:
Created Date:  2014-2-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9111376     Medline TA:  Curr Opin Neurobiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  34-38     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Elsevier Ltd. All rights reserved.
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