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Auteur J. P. ROYET |
Documents disponibles écrits par cet auteur (1)



Olfactory processing in adults with autism spectrum disorders / B. WICKER in Molecular Autism, 7 (2016)
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[article]
Titre : Olfactory processing in adults with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : B. WICKER, Auteur ; E. MONFARDINI, Auteur ; J. P. ROYET, Auteur Article en page(s) : 4p. Langues : Anglais (eng) Mots-clés : Adult Autism Spectrum Disorder/physiopathology/psychology Differential Threshold/physiology Emotions/physiology Female Humans Hyperesthesia/etiology/physiopathology/psychology Hypesthesia/etiology/physiopathology/psychology Male Odorants Olfactory Pathways/physiopathology Olfactory Perception/physiology Pleasure Recognition (Psychology)/physiology Sensory Thresholds Young Adult Autism spectrum disorders Hyperresponsiveness Identification Intensity Olfaction Pleasantness Suprathreshold detection Index. décimale : PER Périodiques Résumé : BACKGROUND: 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. METHODS: 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. RESULTS: 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. CONCLUSIONS: The changes in discrimination and bias scores were the result of a high number of false alarms among the participants with ASD, which suggests the adoption of a liberal attitude in their responses. Atypical intensity and pleasantness ratings were associated with hyperresponsiveness and flattened emotional reactions, respectively, which are typical of participants with ASD. The high number of near misses as non-veridical labels suggested that categorical processing is functional in individuals with ASD and could be explained by attention-deficit/hyperactivity disorder. These findings are discussed in terms of dysfunction of the olfactory system. En ligne : http://dx.doi.org/10.1186/s13229-016-0070-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329
in Molecular Autism > 7 (2016) . - 4p.[article] Olfactory processing in adults with autism spectrum disorders [Texte imprimé et/ou numérique] / B. WICKER, Auteur ; E. MONFARDINI, Auteur ; J. P. ROYET, Auteur . - 4p.
Langues : Anglais (eng)
in Molecular Autism > 7 (2016) . - 4p.
Mots-clés : Adult Autism Spectrum Disorder/physiopathology/psychology Differential Threshold/physiology Emotions/physiology Female Humans Hyperesthesia/etiology/physiopathology/psychology Hypesthesia/etiology/physiopathology/psychology Male Odorants Olfactory Pathways/physiopathology Olfactory Perception/physiology Pleasure Recognition (Psychology)/physiology Sensory Thresholds Young Adult Autism spectrum disorders Hyperresponsiveness Identification Intensity Olfaction Pleasantness Suprathreshold detection Index. décimale : PER Périodiques Résumé : BACKGROUND: 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. METHODS: 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. RESULTS: 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. CONCLUSIONS: The changes in discrimination and bias scores were the result of a high number of false alarms among the participants with ASD, which suggests the adoption of a liberal attitude in their responses. Atypical intensity and pleasantness ratings were associated with hyperresponsiveness and flattened emotional reactions, respectively, which are typical of participants with ASD. The high number of near misses as non-veridical labels suggested that categorical processing is functional in individuals with ASD and could be explained by attention-deficit/hyperactivity disorder. These findings are discussed in terms of dysfunction of the olfactory system. En ligne : http://dx.doi.org/10.1186/s13229-016-0070-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329