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Détail de l'auteur
Auteur David J. HEEGER |
Documents disponibles écrits par cet auteur (3)
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Cortical Variability in the Sensory-Evoked Response in Autism / Sarah M. HAIGH in Journal of Autism and Developmental Disorders, 45-5 (May 2015)
[article]
Titre : Cortical Variability in the Sensory-Evoked Response in Autism Type de document : Texte imprimé et/ou numérique Auteurs : Sarah M. HAIGH, Auteur ; David J. HEEGER, Auteur ; Ilan DINSTEIN, Auteur ; Nancy MINSHEW, Auteur ; Marlene BEHRMANN, Auteur Article en page(s) : p.1176-1190 Langues : Anglais (eng) Mots-clés : Autism fMRI Sensory-evoked Variability Index. décimale : PER Périodiques Résumé : Previous findings have shown that individuals with autism spectrum disorder (ASD) evince greater intra-individual variability (IIV) in their sensory-evoked fMRI responses compared to typical control participants. We explore the robustness of this finding with a new sample of high-functioning adults with autism. Participants were presented with visual, somatosensory and auditory stimuli in the scanner whilst they completed a one-back task. While ASD and control participants were statistically indistinguishable with respect to behavioral responses, the new ASD group exhibited greater IIV relative to controls. We also show that the IIV was equivalent across hemispheres and remained stable over the duration of the experiment. This suggests that greater cortical IIV may be a replicable characteristic of sensory systems in autism. En ligne : http://dx.doi.org/10.1007/s10803-014-2276-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=259
in Journal of Autism and Developmental Disorders > 45-5 (May 2015) . - p.1176-1190[article] Cortical Variability in the Sensory-Evoked Response in Autism [Texte imprimé et/ou numérique] / Sarah M. HAIGH, Auteur ; David J. HEEGER, Auteur ; Ilan DINSTEIN, Auteur ; Nancy MINSHEW, Auteur ; Marlene BEHRMANN, Auteur . - p.1176-1190.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 45-5 (May 2015) . - p.1176-1190
Mots-clés : Autism fMRI Sensory-evoked Variability Index. décimale : PER Périodiques Résumé : Previous findings have shown that individuals with autism spectrum disorder (ASD) evince greater intra-individual variability (IIV) in their sensory-evoked fMRI responses compared to typical control participants. We explore the robustness of this finding with a new sample of high-functioning adults with autism. Participants were presented with visual, somatosensory and auditory stimuli in the scanner whilst they completed a one-back task. While ASD and control participants were statistically indistinguishable with respect to behavioral responses, the new ASD group exhibited greater IIV relative to controls. We also show that the IIV was equivalent across hemispheres and remained stable over the duration of the experiment. This suggests that greater cortical IIV may be a replicable characteristic of sensory systems in autism. En ligne : http://dx.doi.org/10.1007/s10803-014-2276-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=259 Endogenous Spatial Attention: Evidence for Intact Functioning in Adults With Autism / Michael A. GRUBB in Autism Research, 6-2 (April 2013)
[article]
Titre : Endogenous Spatial Attention: Evidence for Intact Functioning in Adults With Autism Type de document : Texte imprimé et/ou numérique Auteurs : Michael A. GRUBB, Auteur ; Marlene BEHRMANN, Auteur ; Ryan EGAN, Auteur ; Nancy J. MINSHEW, Auteur ; Marisa CARRASCO, Auteur ; David J. HEEGER, Auteur Année de publication : 2013 Article en page(s) : p.108-118 Langues : Anglais (eng) Mots-clés : attention spatial attention endogenous attention psychophysics adults autism autism spectrum disorders ASD Index. décimale : PER Périodiques Résumé : Rapid manipulation of the attention field (i.e. the location and spread of visual spatial attention) is a critical aspect of human cognition, and previous research on spatial attention in individuals with autism spectrum disorders (ASD) has produced inconsistent results. In a series of three psychophysical experiments, we evaluated claims in the literature that individuals with ASD exhibit a deficit in voluntarily controlling the deployment and size of the spatial attention field. We measured the spatial distribution of performance accuracies and reaction times to quantify the sizes and locations of the attention field, with and without spatial uncertainty (i.e. the lack of predictability concerning the spatial position of the upcoming stimulus). We found that high-functioning adults with autism exhibited slower reaction times overall with spatial uncertainty, but the effects of attention on performance accuracies and reaction times were indistinguishable between individuals with autism and typically developing individuals in all three experiments. These results provide evidence of intact endogenous spatial attention function in high-functioning adults with ASD, suggesting that atypical endogenous attention cannot be a latent characteristic of autism in general. En ligne : http://dx.doi.org/10.1002/aur.1269 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=199
in Autism Research > 6-2 (April 2013) . - p.108-118[article] Endogenous Spatial Attention: Evidence for Intact Functioning in Adults With Autism [Texte imprimé et/ou numérique] / Michael A. GRUBB, Auteur ; Marlene BEHRMANN, Auteur ; Ryan EGAN, Auteur ; Nancy J. MINSHEW, Auteur ; Marisa CARRASCO, Auteur ; David J. HEEGER, Auteur . - 2013 . - p.108-118.
Langues : Anglais (eng)
in Autism Research > 6-2 (April 2013) . - p.108-118
Mots-clés : attention spatial attention endogenous attention psychophysics adults autism autism spectrum disorders ASD Index. décimale : PER Périodiques Résumé : Rapid manipulation of the attention field (i.e. the location and spread of visual spatial attention) is a critical aspect of human cognition, and previous research on spatial attention in individuals with autism spectrum disorders (ASD) has produced inconsistent results. In a series of three psychophysical experiments, we evaluated claims in the literature that individuals with ASD exhibit a deficit in voluntarily controlling the deployment and size of the spatial attention field. We measured the spatial distribution of performance accuracies and reaction times to quantify the sizes and locations of the attention field, with and without spatial uncertainty (i.e. the lack of predictability concerning the spatial position of the upcoming stimulus). We found that high-functioning adults with autism exhibited slower reaction times overall with spatial uncertainty, but the effects of attention on performance accuracies and reaction times were indistinguishable between individuals with autism and typically developing individuals in all three experiments. These results provide evidence of intact endogenous spatial attention function in high-functioning adults with ASD, suggesting that atypical endogenous attention cannot be a latent characteristic of autism in general. En ligne : http://dx.doi.org/10.1002/aur.1269 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=199 Over-Responsiveness and Greater Variability in Roughness Perception in Autism / Sarah M. HAIGH in Autism Research, 9-3 (March 2016)
[article]
Titre : Over-Responsiveness and Greater Variability in Roughness Perception in Autism Type de document : Texte imprimé et/ou numérique Auteurs : Sarah M. HAIGH, Auteur ; Nancy MINSHEW, Auteur ; David J. HEEGER, Auteur ; Ilan DINSTEIN, Auteur ; Marlene BEHRMANN, Auteur Article en page(s) : p.393-402 Langues : Anglais (eng) Mots-clés : autism tactile variability sensory hypersensitivity Index. décimale : PER Périodiques Résumé : Although sensory problems, including tactile hypersensitivity and hyposensitivity (DSM-5) are commonly associated with autism, there is a dearth of systematic and rigorous research in this domain. Here, we report findings from a psychophysical experiment that explored differences in tactile perception between individuals with autism and typically developing control participants, who, using their index finger, rated a series of surfaces on the extent of their roughness. Each surface was rated multiple times and we calculated both the average rating and the variability across trials. Relative to controls, the individuals with autism perceived the surfaces as rougher overall and exhibited greater variability in their ratings across trials. These findings characterize altered tactile perception in autism and suggest that sensory problems in autism may be the product of overly responsive and variable sensory processing. Autism Res 2016, 9: 393–402. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1505 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285
in Autism Research > 9-3 (March 2016) . - p.393-402[article] Over-Responsiveness and Greater Variability in Roughness Perception in Autism [Texte imprimé et/ou numérique] / Sarah M. HAIGH, Auteur ; Nancy MINSHEW, Auteur ; David J. HEEGER, Auteur ; Ilan DINSTEIN, Auteur ; Marlene BEHRMANN, Auteur . - p.393-402.
Langues : Anglais (eng)
in Autism Research > 9-3 (March 2016) . - p.393-402
Mots-clés : autism tactile variability sensory hypersensitivity Index. décimale : PER Périodiques Résumé : Although sensory problems, including tactile hypersensitivity and hyposensitivity (DSM-5) are commonly associated with autism, there is a dearth of systematic and rigorous research in this domain. Here, we report findings from a psychophysical experiment that explored differences in tactile perception between individuals with autism and typically developing control participants, who, using their index finger, rated a series of surfaces on the extent of their roughness. Each surface was rated multiple times and we calculated both the average rating and the variability across trials. Relative to controls, the individuals with autism perceived the surfaces as rougher overall and exhibited greater variability in their ratings across trials. These findings characterize altered tactile perception in autism and suggest that sensory problems in autism may be the product of overly responsive and variable sensory processing. Autism Res 2016, 9: 393–402. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1505 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285