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Auteur Laurent MOTTRON |
Documents disponibles écrits par cet auteur (64)
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Postural Hypo-Reactivity in Autism is Contingent on Development and Visual Environment: A Fully Immersive Virtual Reality Study / Selma GREFFOU in Journal of Autism and Developmental Disorders, 42-6 (June 2012)
[article]
Titre : Postural Hypo-Reactivity in Autism is Contingent on Development and Visual Environment: A Fully Immersive Virtual Reality Study Type de document : Texte imprimé et/ou numérique Auteurs : Selma GREFFOU, Auteur ; Armando BERTONE, Auteur ; Eva-Maria HAHLER, Auteur ; Jean-Marie HANSSENS, Auteur ; Laurent MOTTRON, Auteur ; Jocelyn FAUBERT, Auteur Année de publication : 2012 Article en page(s) : p.961-970 Langues : Anglais (eng) Mots-clés : Autism Posture Development Sensorimotor Virtual reality Motion perception Index. décimale : PER Périodiques Résumé : Although atypical motor behaviors have been associated with autism, investigations regarding their possible origins are scarce. This study assessed the visual and vestibular components involved in atypical postural reactivity in autism. Postural reactivity and stability were measured for younger (12–15 years) and older (16–33 years) autistic participants in response to a virtual tunnel oscillating at different frequencies. At the highest oscillation frequency, younger autistic participants showed significantly less instability compared to younger typically-developing participants; no such group differences were evidenced for older participants. Additionally, no significant differences in postural behavior were found between all 4 groups when presented with static or without visual information. Results confirm that postural hypo-reactivity to visual information is present in autism, but is contingent on both visual environment and development. En ligne : http://dx.doi.org/10.1007/s10803-011-1326-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=156
in Journal of Autism and Developmental Disorders > 42-6 (June 2012) . - p.961-970[article] Postural Hypo-Reactivity in Autism is Contingent on Development and Visual Environment: A Fully Immersive Virtual Reality Study [Texte imprimé et/ou numérique] / Selma GREFFOU, Auteur ; Armando BERTONE, Auteur ; Eva-Maria HAHLER, Auteur ; Jean-Marie HANSSENS, Auteur ; Laurent MOTTRON, Auteur ; Jocelyn FAUBERT, Auteur . - 2012 . - p.961-970.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 42-6 (June 2012) . - p.961-970
Mots-clés : Autism Posture Development Sensorimotor Virtual reality Motion perception Index. décimale : PER Périodiques Résumé : Although atypical motor behaviors have been associated with autism, investigations regarding their possible origins are scarce. This study assessed the visual and vestibular components involved in atypical postural reactivity in autism. Postural reactivity and stability were measured for younger (12–15 years) and older (16–33 years) autistic participants in response to a virtual tunnel oscillating at different frequencies. At the highest oscillation frequency, younger autistic participants showed significantly less instability compared to younger typically-developing participants; no such group differences were evidenced for older participants. Additionally, no significant differences in postural behavior were found between all 4 groups when presented with static or without visual information. Results confirm that postural hypo-reactivity to visual information is present in autism, but is contingent on both visual environment and development. En ligne : http://dx.doi.org/10.1007/s10803-011-1326-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=156 Preservation of categorical perception for speech in autism with and without speech onset delay / L. CHIODO in Autism Research, 12-11 (November 2019)
[article]
Titre : Preservation of categorical perception for speech in autism with and without speech onset delay Type de document : Texte imprimé et/ou numérique Auteurs : L. CHIODO, Auteur ; Laurent MOTTRON, Auteur ; S. MAJERUS, Auteur Article en page(s) : p.1609-1622 Langues : Anglais (eng) Mots-clés : Bayesian models autism spectrum categorical perception cognition speech onset delay Index. décimale : PER Périodiques Résumé : Recent accounts of autistic perception, including Bayesian accounts, hypothesize a reduced influence of prior knowledge on perception across different domains in the autism spectrum (AS). The purpose of this study was to investigate the influence of prior linguistic knowledge, in the form of phonemic categorical knowledge, on speech perception in adults with AS condition. As phonemic categorical knowledge is shaped by language experience and abilities, we furthermore distinguished AS participants with (AS-SOD) or without a history of speech onset delay (AS-noSOD); the control group comprises typical individuals matched for age, nonverbal intelligence, and reading abilities. We also controlled for the influence of auditory-verbal short-term retention capacities by administering word list and nonword list repetition tasks. We did not observe any reduced influence of prior phonemic knowledge on the perception of speech stimuli nor did we observed any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, either between the two autistic groups or relative to the control group. Short-term memory abilities appeared to be superior in the AS-noSOD group relative to the AS-SOD and control groups, but this strength could be accounted for by their higher vocabulary knowledge. The preservation of categorical perception in verbal autistic adults observed in this study challenges models claiming a reduced influence of prior knowledge on perception across domains in the AS. Autism Res 2019. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: A reduced influence of prior knowledge has been considered to characterize perceptual abilities in people with autism. In this article, we examine this claim by assessing nonlinguistic and linguistic auditory perception abilities in adults with autism, and by further distinguishing between autism with or without a history of delayed language development. We did not observe any reduced influence of prior language knowledge on the perception of speech stimuli nor did we observe any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, and this relative to a control group matched on age, nonverbal intellectual efficiency, and reading abilities. Our results challenge models claiming a reduced influence of prior knowledge on perception across domains in the AS. En ligne : http://dx.doi.org/10.1002/aur.2134 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=411
in Autism Research > 12-11 (November 2019) . - p.1609-1622[article] Preservation of categorical perception for speech in autism with and without speech onset delay [Texte imprimé et/ou numérique] / L. CHIODO, Auteur ; Laurent MOTTRON, Auteur ; S. MAJERUS, Auteur . - p.1609-1622.
Langues : Anglais (eng)
in Autism Research > 12-11 (November 2019) . - p.1609-1622
Mots-clés : Bayesian models autism spectrum categorical perception cognition speech onset delay Index. décimale : PER Périodiques Résumé : Recent accounts of autistic perception, including Bayesian accounts, hypothesize a reduced influence of prior knowledge on perception across different domains in the autism spectrum (AS). The purpose of this study was to investigate the influence of prior linguistic knowledge, in the form of phonemic categorical knowledge, on speech perception in adults with AS condition. As phonemic categorical knowledge is shaped by language experience and abilities, we furthermore distinguished AS participants with (AS-SOD) or without a history of speech onset delay (AS-noSOD); the control group comprises typical individuals matched for age, nonverbal intelligence, and reading abilities. We also controlled for the influence of auditory-verbal short-term retention capacities by administering word list and nonword list repetition tasks. We did not observe any reduced influence of prior phonemic knowledge on the perception of speech stimuli nor did we observed any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, either between the two autistic groups or relative to the control group. Short-term memory abilities appeared to be superior in the AS-noSOD group relative to the AS-SOD and control groups, but this strength could be accounted for by their higher vocabulary knowledge. The preservation of categorical perception in verbal autistic adults observed in this study challenges models claiming a reduced influence of prior knowledge on perception across domains in the AS. Autism Res 2019. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: A reduced influence of prior knowledge has been considered to characterize perceptual abilities in people with autism. In this article, we examine this claim by assessing nonlinguistic and linguistic auditory perception abilities in adults with autism, and by further distinguishing between autism with or without a history of delayed language development. We did not observe any reduced influence of prior language knowledge on the perception of speech stimuli nor did we observe any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, and this relative to a control group matched on age, nonverbal intellectual efficiency, and reading abilities. Our results challenge models claiming a reduced influence of prior knowledge on perception across domains in the AS. En ligne : http://dx.doi.org/10.1002/aur.2134 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=411 Prevalence of Clinically and Empirically Defined Talents and Strengths in Autism / Andrée-Anne S. MEILLEUR in Journal of Autism and Developmental Disorders, 45-5 (May 2015)
[article]
Titre : Prevalence of Clinically and Empirically Defined Talents and Strengths in Autism Type de document : Texte imprimé et/ou numérique Auteurs : Andrée-Anne S. MEILLEUR, Auteur ; Patricia JELENIC, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : p.1354-1367 Langues : Anglais (eng) Mots-clés : Perception Savant Talent Block Pitch Expertise Index. décimale : PER Périodiques Résumé : Outstanding skills, including special isolated skills (SIS) and perceptual peaks (PP) are frequent features of autism. However, their reported prevalence varies between studies and their co-occurrence is unknown. We determined the prevalence of SIS in a large group of 254 autistic individuals and searched for PP in 46 of these autistic individuals and 46 intelligence and age-matched typically developing controls. The prevalence of SIS among autistic individuals was 62.5 % and that of PP was 58 % (13 % in controls). The prevalence of SIS increased with intelligence and age. The existence of an SIS in a particular modality was not associated with the presence of a PP in the same modality. This suggests that talents involve an experience-dependent component in addition to genetically defined alterations of perceptual encoding. En ligne : http://dx.doi.org/10.1007/s10803-014-2296-2 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.1354-1367[article] Prevalence of Clinically and Empirically Defined Talents and Strengths in Autism [Texte imprimé et/ou numérique] / Andrée-Anne S. MEILLEUR, Auteur ; Patricia JELENIC, Auteur ; Laurent MOTTRON, Auteur . - p.1354-1367.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 45-5 (May 2015) . - p.1354-1367
Mots-clés : Perception Savant Talent Block Pitch Expertise Index. décimale : PER Périodiques Résumé : Outstanding skills, including special isolated skills (SIS) and perceptual peaks (PP) are frequent features of autism. However, their reported prevalence varies between studies and their co-occurrence is unknown. We determined the prevalence of SIS in a large group of 254 autistic individuals and searched for PP in 46 of these autistic individuals and 46 intelligence and age-matched typically developing controls. The prevalence of SIS among autistic individuals was 62.5 % and that of PP was 58 % (13 % in controls). The prevalence of SIS increased with intelligence and age. The existence of an SIS in a particular modality was not associated with the presence of a PP in the same modality. This suggests that talents involve an experience-dependent component in addition to genetically defined alterations of perceptual encoding. En ligne : http://dx.doi.org/10.1007/s10803-014-2296-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=259 A Psychosocial Study on Restricted Interests in High Functioning Persons with Pervasive Developmental Disorders / Céline MERCIER in Autism, 4-4 (December 2000)
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Titre : A Psychosocial Study on Restricted Interests in High Functioning Persons with Pervasive Developmental Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Céline MERCIER, Auteur ; Laurent MOTTRON, Auteur ; Sylvie BELLEVILLE, Auteur Article en page(s) : p.406-425 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : To explore how restricted interests are perceived by individuals with pervasive developmental disorders (PDDs) and their relatives, 18 in-depth semi-structured interviews were conducted with six high-functioning individuals with PDD, their parents and/or siblings. Results revealed that restricted interests play a significant role in the person’s life that is acknowledged by most of their relatives. They provide a sense of well-being, a positive way of occupying one’s time, a source of personal validation, and an incentive for personal growth. However, these positive dimensions are counterbalanced by their negative consequences. Following the demands and the support from their environment, the participants in the study reported to have involved themselves in an active process to adapt, reduce or diversify their restricted interests. These findings on transformation of restricted interests under development and social pressure may have theoretical (for cognitive models of autism) and clinical consequences (in their use for rehabilitation). En ligne : http://dx.doi.org/10.1177/1362361300004004006 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=208
in Autism > 4-4 (December 2000) . - p.406-425[article] A Psychosocial Study on Restricted Interests in High Functioning Persons with Pervasive Developmental Disorders [Texte imprimé et/ou numérique] / Céline MERCIER, Auteur ; Laurent MOTTRON, Auteur ; Sylvie BELLEVILLE, Auteur . - p.406-425.
Langues : Anglais (eng)
in Autism > 4-4 (December 2000) . - p.406-425
Index. décimale : PER Périodiques Résumé : To explore how restricted interests are perceived by individuals with pervasive developmental disorders (PDDs) and their relatives, 18 in-depth semi-structured interviews were conducted with six high-functioning individuals with PDD, their parents and/or siblings. Results revealed that restricted interests play a significant role in the person’s life that is acknowledged by most of their relatives. They provide a sense of well-being, a positive way of occupying one’s time, a source of personal validation, and an incentive for personal growth. However, these positive dimensions are counterbalanced by their negative consequences. Following the demands and the support from their environment, the participants in the study reported to have involved themselves in an active process to adapt, reduce or diversify their restricted interests. These findings on transformation of restricted interests under development and social pressure may have theoretical (for cognitive models of autism) and clinical consequences (in their use for rehabilitation). En ligne : http://dx.doi.org/10.1177/1362361300004004006 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=208 Questioning the Validity of the Semantic-Pragmatic Syndrome Diagnosis / Louise GAGNON in Autism, 1-1 (July 1997)
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Titre : Questioning the Validity of the Semantic-Pragmatic Syndrome Diagnosis Type de document : Texte imprimé et/ou numérique Auteurs : Louise GAGNON, Auteur ; Laurent MOTTRON, Auteur ; Yves JOANETTE, Auteur Article en page(s) : p.37-55 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : The classification of developmental language disorders has recently witnessed the birth of a subsyndrome, semantic-pragmatic syndrome, used to describe the case of children with specific language and communication impairments. However, there are striking similar-ities between children with semantic-pragmatic syndrome and those with high-functioning autism on a communicative, behavioural and cognitive level. This article questions the validity of semantic-prag-matic syndrome as a diagnostic concept distinct from high-function-ding autism and, consequently, its use as a clinical entity. En ligne : http://dx.doi.org/10.1177/1362361397011006 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=206
in Autism > 1-1 (July 1997) . - p.37-55[article] Questioning the Validity of the Semantic-Pragmatic Syndrome Diagnosis [Texte imprimé et/ou numérique] / Louise GAGNON, Auteur ; Laurent MOTTRON, Auteur ; Yves JOANETTE, Auteur . - p.37-55.
Langues : Anglais (eng)
in Autism > 1-1 (July 1997) . - p.37-55
Index. décimale : PER Périodiques Résumé : The classification of developmental language disorders has recently witnessed the birth of a subsyndrome, semantic-pragmatic syndrome, used to describe the case of children with specific language and communication impairments. However, there are striking similar-ities between children with semantic-pragmatic syndrome and those with high-functioning autism on a communicative, behavioural and cognitive level. This article questions the validity of semantic-prag-matic syndrome as a diagnostic concept distinct from high-function-ding autism and, consequently, its use as a clinical entity. En ligne : http://dx.doi.org/10.1177/1362361397011006 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=206 Representativeness of autistic samples in studies recruiting through social media / Eya-Mist RØDGAARD in Autism Research, 15-8 (August 2022)
PermalinkSearching for What Really Matters: A Thematic Analysis of Quality of Life among Preschool Children on the Autism Spectrum / Jérôme LICHTLE in Journal of Autism and Developmental Disorders, 52-5 (May 2022)
PermalinkSelf-Injury in Autism is Largely Unexplained: Now What? / Baudouin FORGEOT D'ARC in Journal of Autism and Developmental Disorders, 42-11 (November 2012)
PermalinkSeverity should be distinguished from prototypicality / Laurent MOTTRON in Autism Research, 16-9 (September 2023)
PermalinkSex differences in brain plasticity: a new hypothesis for sex ratio bias in autism / Laurent MOTTRON in Molecular Autism, (June 2015)
PermalinkSocio-Guide, Programme d'entraînement aux habiletés sociales adapté pour une clientèle présentant un trouble envahissant du développement / Suzanne BERNIER
PermalinkSurfonctionnements et déficits perceptifs dans l’autisme : un même profil de performance pour l’information sociale et non sociale / Laurent MOTTRON
PermalinkLes "surfonctionnements" perceptifs dans l’autisme / Laurent MOTTRON in Bulletin Scientifique de l'arapi (Le), 8 (décembre 2001)
PermalinkSusceptibility to the Shepard illusion in participants with autism: reduced top-down influences within perception? / Peter MITCHELL in Autism Research, 3-3 (June 2010)
PermalinkTemporal context memory in high-functioning autism / Agnès GRAS-VINCENDON in Autism, 11-6 (November 2007)
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