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Détail de l'auteur
Auteur Aya SHIRAMA |
Documents disponibles écrits par cet auteur (2)
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Ocular Fixation Abnormality in Patients with Autism Spectrum Disorder / Aya SHIRAMA in Journal of Autism and Developmental Disorders, 46-5 (May 2016)
[article]
Titre : Ocular Fixation Abnormality in Patients with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Aya SHIRAMA, Auteur ; Chieko KANAI, Auteur ; Nobumasa KATO, Auteur ; Makio KASHINO, Auteur Article en page(s) : p.1613-1622 Langues : Anglais (eng) Mots-clés : ASD Ocular fixation Sensorimotor function Antisaccade task Index. décimale : PER Périodiques Résumé : We examined the factors that influence ocular fixation control in adults with autism spectrum disorder (ASD) including sensory information, individuals’ motor characteristics, and inhibitory control. The ASD group showed difficulty in maintaining fixation especially when there was no fixation target. The fixational eye movement characteristics of individuals were consistent regardless of the presence or absence of a fixation target in the controls, but not in the ASD group. Additionally, fixation stability did not correlate with an ability to suppress reflexive saccades measured by an antisaccade task. These findings suggest that ASD adults have deficits in converting alternative sensory information, such as retinal signals in the peripheral visual field or extraretinal signals, to motor commands when the foveal information is unavailable. En ligne : http://dx.doi.org/10.1007/s10803-015-2688-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=288
in Journal of Autism and Developmental Disorders > 46-5 (May 2016) . - p.1613-1622[article] Ocular Fixation Abnormality in Patients with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Aya SHIRAMA, Auteur ; Chieko KANAI, Auteur ; Nobumasa KATO, Auteur ; Makio KASHINO, Auteur . - p.1613-1622.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 46-5 (May 2016) . - p.1613-1622
Mots-clés : ASD Ocular fixation Sensorimotor function Antisaccade task Index. décimale : PER Périodiques Résumé : We examined the factors that influence ocular fixation control in adults with autism spectrum disorder (ASD) including sensory information, individuals’ motor characteristics, and inhibitory control. The ASD group showed difficulty in maintaining fixation especially when there was no fixation target. The fixational eye movement characteristics of individuals were consistent regardless of the presence or absence of a fixation target in the controls, but not in the ASD group. Additionally, fixation stability did not correlate with an ability to suppress reflexive saccades measured by an antisaccade task. These findings suggest that ASD adults have deficits in converting alternative sensory information, such as retinal signals in the peripheral visual field or extraretinal signals, to motor commands when the foveal information is unavailable. En ligne : http://dx.doi.org/10.1007/s10803-015-2688-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=288 When do individuals with autism spectrum disorder show superiority in visual search? / Aya SHIRAMA in Autism, 21-8 (November 2017)
[article]
Titre : When do individuals with autism spectrum disorder show superiority in visual search? Type de document : Texte imprimé et/ou numérique Auteurs : Aya SHIRAMA, Auteur ; Nobumasa KATO, Auteur ; Makio KASHINO, Auteur Année de publication : 2017 Article en page(s) : p.942-951 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Although superior visual search skills have been repeatedly reported for individuals with autism spectrum disorder, the underlying mechanisms remain controversial. To specify the locus where individuals with autism spectrum disorder excel in visual search, we compared the performance of autism spectrum disorder adults and healthy controls in briefly presented search tasks, where the search display was replaced by a noise mask at a stimulus-mask asynchrony of 160?ms to interfere with a serial search process while bottom-up visual processing remains intact. We found that participants with autism spectrum disorder show faster overall reaction times regardless of the number of stimuli and the presence of a target with higher accuracy than controls in a luminance and shape conjunction search task as well as a hard feature search task where the target feature information was ineffective in prioritizing likely target stimuli. In addition, the analysis of target eccentricity illustrated that the autism spectrum disorder group has better target discriminability regardless of target eccentricity, suggesting that the autism spectrum disorder advantage does not derive from a reduced crowding effect, which is known to be enhanced with increasing retinal eccentricity. The findings suggest that individuals with autism spectrum disorder excel in non-search processes, especially in the simultaneous discrimination of multiple visual stimuli. En ligne : https://doi.org/10.1177/1362361316656943 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=320
in Autism > 21-8 (November 2017) . - p.942-951[article] When do individuals with autism spectrum disorder show superiority in visual search? [Texte imprimé et/ou numérique] / Aya SHIRAMA, Auteur ; Nobumasa KATO, Auteur ; Makio KASHINO, Auteur . - 2017 . - p.942-951.
Langues : Anglais (eng)
in Autism > 21-8 (November 2017) . - p.942-951
Index. décimale : PER Périodiques Résumé : Although superior visual search skills have been repeatedly reported for individuals with autism spectrum disorder, the underlying mechanisms remain controversial. To specify the locus where individuals with autism spectrum disorder excel in visual search, we compared the performance of autism spectrum disorder adults and healthy controls in briefly presented search tasks, where the search display was replaced by a noise mask at a stimulus-mask asynchrony of 160?ms to interfere with a serial search process while bottom-up visual processing remains intact. We found that participants with autism spectrum disorder show faster overall reaction times regardless of the number of stimuli and the presence of a target with higher accuracy than controls in a luminance and shape conjunction search task as well as a hard feature search task where the target feature information was ineffective in prioritizing likely target stimuli. In addition, the analysis of target eccentricity illustrated that the autism spectrum disorder group has better target discriminability regardless of target eccentricity, suggesting that the autism spectrum disorder advantage does not derive from a reduced crowding effect, which is known to be enhanced with increasing retinal eccentricity. The findings suggest that individuals with autism spectrum disorder excel in non-search processes, especially in the simultaneous discrimination of multiple visual stimuli. En ligne : https://doi.org/10.1177/1362361316656943 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=320