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Self-Rated Social Skills Predict Visual Perception: Impairments in Object Discrimination Requiring Transient Attention Associated with High Autistic Tendency / Robin LAYCOCK in Autism Research, 7-1 (February 2014)
[article]
Titre : Self-Rated Social Skills Predict Visual Perception: Impairments in Object Discrimination Requiring Transient Attention Associated with High Autistic Tendency Type de document : Texte imprimé et/ou numérique Auteurs : Robin LAYCOCK, Auteur ; Alana Jade CROSS, Auteur ; Felicity DALLE NOGARE, Auteur ; Sheila Gillard CREWTHER, Auteur Article en page(s) : p.104-111 Langues : Anglais (eng) Mots-clés : autism dorsal stream ventral stream object discrimination attention Index. décimale : PER Périodiques Résumé : Autism is usually defined by impairments in the social domain but has also been linked to deficient dorsal visual stream processing. However, inconsistent findings make the nature of this relationship unclear and thus, we examined the role of stimulus-driven transient attention, presumably activated by the dorsal stream in autistic tendency. Contrast thresholds for object discrimination were compared between groups with high and low self-rated autistic tendency utilizing the socially based Autism Spectrum Quotient (AQ). Visual stimuli were presented with either abrupt or with ramped contrast onsets/offsets in order to manipulate the demands of transient attention. Larger impairments in performance of abrupt compared with ramped object presentation were established in the high AQ group. Furthermore, self-reported social skills predicted abrupt task performance, suggesting an important visual perception deficiency in autism-related traits. Autism spectrum disorder may be associated with reduced utilization of the dorsal stream to rapidly activate attention prior to ventral stream processing when stimuli are transient. En ligne : http://dx.doi.org/10.1002/aur.1336 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=227
in Autism Research > 7-1 (February 2014) . - p.104-111[article] Self-Rated Social Skills Predict Visual Perception: Impairments in Object Discrimination Requiring Transient Attention Associated with High Autistic Tendency [Texte imprimé et/ou numérique] / Robin LAYCOCK, Auteur ; Alana Jade CROSS, Auteur ; Felicity DALLE NOGARE, Auteur ; Sheila Gillard CREWTHER, Auteur . - p.104-111.
Langues : Anglais (eng)
in Autism Research > 7-1 (February 2014) . - p.104-111
Mots-clés : autism dorsal stream ventral stream object discrimination attention Index. décimale : PER Périodiques Résumé : Autism is usually defined by impairments in the social domain but has also been linked to deficient dorsal visual stream processing. However, inconsistent findings make the nature of this relationship unclear and thus, we examined the role of stimulus-driven transient attention, presumably activated by the dorsal stream in autistic tendency. Contrast thresholds for object discrimination were compared between groups with high and low self-rated autistic tendency utilizing the socially based Autism Spectrum Quotient (AQ). Visual stimuli were presented with either abrupt or with ramped contrast onsets/offsets in order to manipulate the demands of transient attention. Larger impairments in performance of abrupt compared with ramped object presentation were established in the high AQ group. Furthermore, self-reported social skills predicted abrupt task performance, suggesting an important visual perception deficiency in autism-related traits. Autism spectrum disorder may be associated with reduced utilization of the dorsal stream to rapidly activate attention prior to ventral stream processing when stimuli are transient. En ligne : http://dx.doi.org/10.1002/aur.1336 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=227 Brief Report: Preliminary Evidence of Reduced Sensitivity in the Peripheral Visual Field of Adolescents with Autistic Spectrum Disorder / Elizabeth MILNE in Journal of Autism and Developmental Disorders, 43-8 (August 2013)
[article]
Titre : Brief Report: Preliminary Evidence of Reduced Sensitivity in the Peripheral Visual Field of Adolescents with Autistic Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Elizabeth MILNE, Auteur ; Alison SCOPE, Auteur ; Helen GRIFFITHS, Auteur ; Charlotte CODINA, Auteur ; David BUCKLEY, Auteur Article en page(s) : p.1976-1982 Langues : Anglais (eng) Mots-clés : Vision Peripheral visual field Nasal hemifield Temporal hemifield Dorsal stream Ventral stream Rods Cones Perception Autism spectrum disorder Index. décimale : PER Périodiques Résumé : A number of studies have demonstrated atypical perception in individuals with ASD. However, the majority of these studies have presented stimuli to central vision. The aim of the study presented here was to test the sensitivity of peripheral vision in ASD. This was achieved by asking participants to detect brief flashes of light presented between 30 and 85 degrees away from fixation. We found that participants with ASD detected fewer ligh-flashes than the control participants. This deficit was more pronounced in the nasal hemifield than the temporal hemifield. We suggest that the imbalance between nasal and temporal hemifield sensitivity may contribute to the peripheral-field stimulation and lateral glances that are observed in ASD. En ligne : http://dx.doi.org/10.1007/s10803-012-1730-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=206
in Journal of Autism and Developmental Disorders > 43-8 (August 2013) . - p.1976-1982[article] Brief Report: Preliminary Evidence of Reduced Sensitivity in the Peripheral Visual Field of Adolescents with Autistic Spectrum Disorder [Texte imprimé et/ou numérique] / Elizabeth MILNE, Auteur ; Alison SCOPE, Auteur ; Helen GRIFFITHS, Auteur ; Charlotte CODINA, Auteur ; David BUCKLEY, Auteur . - p.1976-1982.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 43-8 (August 2013) . - p.1976-1982
Mots-clés : Vision Peripheral visual field Nasal hemifield Temporal hemifield Dorsal stream Ventral stream Rods Cones Perception Autism spectrum disorder Index. décimale : PER Périodiques Résumé : A number of studies have demonstrated atypical perception in individuals with ASD. However, the majority of these studies have presented stimuli to central vision. The aim of the study presented here was to test the sensitivity of peripheral vision in ASD. This was achieved by asking participants to detect brief flashes of light presented between 30 and 85 degrees away from fixation. We found that participants with ASD detected fewer ligh-flashes than the control participants. This deficit was more pronounced in the nasal hemifield than the temporal hemifield. We suggest that the imbalance between nasal and temporal hemifield sensitivity may contribute to the peripheral-field stimulation and lateral glances that are observed in ASD. En ligne : http://dx.doi.org/10.1007/s10803-012-1730-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=206