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High hunger state increases olfactory sensitivity to neutral but not food odors.
MedLine Citation:
PMID:  20978137     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Understanding how hunger state relates to olfactory sensitivity has become more urgent due to their possible role in obesity. In 2 studies (within-subjects: n = 24, between-subjects: n = 40), participants were provided with lunch before (satiated state) or after (nonsatiated state) testing and completed a standardized olfactory threshold test to a neutral odor (Experiments 1 and 2) and discrimination test to a food odor (Experiment 2). Experiment 1 revealed that olfactory sensitivity was greater in the nonsatiated versus satiated state, with additionally increased sensitivity for the low body mass index (BMI) compared with high BMI group. Experiment 2 replicated this effect for neutral odors, but in the case of food odors, those in a satiated state had greater acuity. Additionally, whereas the high BMI group had higher acuity to food odors in the satiated versus nonsatiated state, no such differences were found for the low BMI group. The research here is the first to demonstrate how olfactory acuity changes as a function of hunger state and relatedness of odor to food and that BMI can predict differences in olfactory sensitivity.
Authors:
Lorenzo D Stafford; Kimberley Welbeck
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Publication Detail:
Type:  Journal Article     Date:  2010-10-26
Journal Detail:
Title:  Chemical senses     Volume:  36     ISSN:  1464-3553     ISO Abbreviation:  Chem. Senses     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8217190     Medline TA:  Chem Senses     Country:  England    
Other Details:
Languages:  eng     Pagination:  189-98     Citation Subset:  IM    
Affiliation:
Department of Psychology, University of Portsmouth, King Henry Building, King Henry I Street, Portsmouth PO1 2DY, UK. lorenzo.stafford@port.ac.uk
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