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Perception of odors and tastes in autism spectrum disorders: A systematic review of assessments
Author(s) -
Boudjarane Mohamed A.,
Grandgeorge Marine,
Marianowski Rémi,
Misery Laurent,
Lemonnier Éric
Publication year - 2017
Publication title -
autism research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.656
H-Index - 66
eISSN - 1939-3806
pISSN - 1939-3792
DOI - 10.1002/aur.1760
Subject(s) - autism , olfaction , psychology , population , sensory system , perception , odor , sensory processing , autism spectrum disorder , audiology , taste , neuroscience , developmental psychology , cognitive psychology , medicine , environmental health
Olfaction and gustation are major sensory functions implied in processing environmental stimuli. Some evidences suggest that loss of olfactory function is an early biomarker for neurodegenerative disorders and atypical processing of odor and taste stimuli is present in several neurodevelopmental disorders, notably in Autism Spectrum Disorders (ASD). In this paper, we conducted a systematic review investigating the assessments of olfaction and gustation with psychophysics methods in individuals with ASD. Pubmed, PMC and Sciencedirect were scrutinized for relevant literature published from 1970 to 2015. In this review, fourteen papers met our inclusion criteria. They were analyzed critically in order to evaluate the occurrence of olfactory and gustatory dysfunction in ASD, as well as to report the methods used to assess olfaction and gustation in such conditions. Regarding to these two senses, the overall number of studies is low. Most of studies show significant difference regarding to odor or taste identification but not for detection threshold. Overall, odor rating through pleasantness, intensity and familiarity do not differ significantly between control and individuals with ASD. The current evidences can suggest the presence of olfactory and gustatory dysfunction in ASD. Therefore, our analysis show a heterogeneity of findings. This is due to several methodological limitations such as the tools used or population studied. Understanding these disorders could help to shed light on other atypical behavior in this population such as feeding or social behavior. Autism Res 2017, 0: 000–000 . © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Autism Res 2017, 10: 1045–1057 . © 2017 International Society for Autism Research, Wiley Periodicals, Inc.