Olfactory processing in adults with autism spectrum disorders

Molecular Autism
B WickerJean-Pierre Royet

Abstract

As evidenced in the DSM-V, autism spectrum disorders (ASD) are often characterized by atypical sensory behavior (hyper- or hypo-reactivity), but very few studies have evaluated olfactory abilities in individuals with ASD. Fifteen adults with ASD and 15 typically developing participants underwent olfactory tests focused on superficial (suprathreshold detection task), perceptual (intensity and pleasantness judgment tasks), and semantic (identification task) odor processing. In terms of suprathreshold detection performance, decreased discrimination scores and increased bias scores were observed in the ASD group. Furthermore, the participants with ASD exhibited increased intensity judgment scores and impaired scores for pleasantness judgments of unpleasant odorants. Decreased identification performance was also observed in the participants with ASD compared with the typically developing participants. This decrease was partly attributed to a higher number of near misses (a category close to veridical labels) among the participants with ASD than was observed among the typically developing participants. The changes in discrimination and bias scores were the result of a high number of false alarms among the participants with ASD, which...Continue Reading

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Citations

Jul 14, 2016·Brain Pathology·David A MenassaSteven A Chance
Jan 21, 2017·Perception·Asifa MajidArtin Arshamian
Dec 1, 2017·Journal of Autism and Developmental Disorders·Laurie-Anne Sapey-TriompheChristina Schmitz
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Jul 3, 2021·International Journal of Environmental Research and Public Health·Naina Bhatia-Dey, Thomas Heinbockel
Jan 7, 2017·Perception·Rebecka N AddoMaria Larsson

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