782 recherche sur le mot-clé 'Low-level-perceptual-processing'

Brief Report: Atypical Social Cognition and Social Behaviours in Autism Spectrum Disorder: A Different Way of Processing Rather than an Impairment / Kate O’CONNOR in Journal of Autism and Developmental Disorders, 38-10 (November 2008)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 38-10 (November 2008) . - p.1989-1997 Titre : Brief Report: Atypical Social Cognition and Social Behaviours in Autism Spectrum Disorder: A Different Way of Processing Rather than an Impairment Type de document : texte imprimé Auteurs : Kate O’CONNOR, Auteur ; Ian KIRK, Auteur Année de publication : 2008 Article en page(s) : p.1989-1997 Langues : Anglais (eng) Mots-clés : Autism Asperger’s-syndrome Low-level-perceptual-processing Central-coherence Social-cognition Index. décimale : PER Périodiques Résumé : A central question to autism research is whether autism is largely the result of an impairment in social cognition and/or motivation or the result of a more general processing difference. This review discusses problems with the “social deficit” model of autism spectrum disorder (ASD). It is suggested that superior attention to low-level perceptual information potentially coupled with decreased attention to global information may provide a more comprehensive explanation for atypical social behaviours in ASD. This processing style may reflect increased activation of occipital-temporal regions and reduced functional (and possibly anatomical) connectivity. It is concluded that atypical social behaviours in ASD are more likely to be a consequence reflective of a general processing difference than impairment in social cognition and/or motivation. En ligne : http://dx.doi.org/10.1007/s10803-008-0559-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=642 [article] Brief Report: Atypical Social Cognition and Social Behaviours in Autism Spectrum Disorder: A Different Way of Processing Rather than an Impairment [texte imprimé] / Kate O’CONNOR, Auteur ; Ian KIRK, Auteur . - 2008 . - p.1989-1997. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 38-10 (November 2008) . - p.1989-1997 Mots-clés : Autism Asperger’s-syndrome Low-level-perceptual-processing Central-coherence Social-cognition Index. décimale : PER Périodiques Résumé : A central question to autism research is whether autism is largely the result of an impairment in social cognition and/or motivation or the result of a more general processing difference. This review discusses problems with the “social deficit” model of autism spectrum disorder (ASD). It is suggested that superior attention to low-level perceptual information potentially coupled with decreased attention to global information may provide a more comprehensive explanation for atypical social behaviours in ASD. This processing style may reflect increased activation of occipital-temporal regions and reduced functional (and possibly anatomical) connectivity. It is concluded that atypical social behaviours in ASD are more likely to be a consequence reflective of a general processing difference than impairment in social cognition and/or motivation. En ligne : http://dx.doi.org/10.1007/s10803-008-0559-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=642

Audition-specific temporal processing deficits associated with language function in children with autism spectrum disorder / Jennifer H. FOSS-FEIG in Autism Research, 10-11 (November 2017)  

Public ISBD [article]  inAutism Research > 10-11 (November 2017) . - p.1845-1856 Titre : Audition-specific temporal processing deficits associated with language function in children with autism spectrum disorder Type de document : texte imprimé Auteurs : Jennifer H. FOSS-FEIG, Auteur ; Kimberly B. SCHAUDER, Auteur ; Alexandra P. KEY, Auteur ; Mark T. WALLACE, Auteur ; Wendy L. STONE, Auteur Article en page(s) : p.1845-1856 Langues : Anglais (eng) Mots-clés : ASD  audition  vision  temporal processing  language  low level perception Index. décimale : PER Périodiques Résumé : Sensory processing alterations are highly prevalent in autism spectrum disorder (ASD). Neurobiologically-based theories of ASD propose that abnormalities in the processing of temporal aspects of sensory input could underlie core symptoms of ASD. For example, rapid auditory temporal processing is critical for speech perception, and language difficulties are central to the social communication deficits defining the disorder. This study assessed visual and auditory temporal processing abilities and tested their relation to core ASD symptoms. 53 children (26 ASD, 27 TD) completed visual and auditory psychophysical gap detection tasks to measure gap detection thresholds (i.e., the minimum interval between sequential stimuli needed for individuals to perceive an interruption between the stimuli) in each domain. Children were also administered standardized language assessments such that the relation between individual differences in auditory gap detection thresholds and degree of language and communication difficulties among children with ASD could be assessed. Children with ASD had substantially higher auditory gap detection thresholds compared to children with TD, and auditory gap detection thresholds were correlated significantly with several measures of language processing in this population. No group differences were observed in the visual temporal processing. Results indicate a domain-specific impairment in rapid auditory temporal processing in ASD that is associated with greater difficulties in language processing. Findings provide qualified support for temporal processing theories of ASD and highlight the need for future research testing the nature, extent, and universality of auditory temporal processing deficits in this population. Autism Res 2017, 10: 1845–1856. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Sensory symptoms are common in ASD. Temporal processing alterations are often implicated, but understudied. The ability to process rapid sensory information, particularly auditory input, is critical for language functioning. This study tested auditory and visual temporal processing in ASD and controls. Findings suggest that rapid auditory (but not visual) processing is impaired in ASD and related to language functioning. These results could provide mechanistic clues to understanding core symptoms and lead to novel intervention targets. En ligne : http://dx.doi.org/10.1002/aur.1820 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=322 [article] Audition-specific temporal processing deficits associated with language function in children with autism spectrum disorder [texte imprimé] / Jennifer H. FOSS-FEIG, Auteur ; Kimberly B. SCHAUDER, Auteur ; Alexandra P. KEY, Auteur ; Mark T. WALLACE, Auteur ; Wendy L. STONE, Auteur . - p.1845-1856. Langues : Anglais (eng) in Autism Research > 10-11 (November 2017) . - p.1845-1856 Mots-clés : ASD  audition  vision  temporal processing  language  low level perception Index. décimale : PER Périodiques Résumé : Sensory processing alterations are highly prevalent in autism spectrum disorder (ASD). Neurobiologically-based theories of ASD propose that abnormalities in the processing of temporal aspects of sensory input could underlie core symptoms of ASD. For example, rapid auditory temporal processing is critical for speech perception, and language difficulties are central to the social communication deficits defining the disorder. This study assessed visual and auditory temporal processing abilities and tested their relation to core ASD symptoms. 53 children (26 ASD, 27 TD) completed visual and auditory psychophysical gap detection tasks to measure gap detection thresholds (i.e., the minimum interval between sequential stimuli needed for individuals to perceive an interruption between the stimuli) in each domain. Children were also administered standardized language assessments such that the relation between individual differences in auditory gap detection thresholds and degree of language and communication difficulties among children with ASD could be assessed. Children with ASD had substantially higher auditory gap detection thresholds compared to children with TD, and auditory gap detection thresholds were correlated significantly with several measures of language processing in this population. No group differences were observed in the visual temporal processing. Results indicate a domain-specific impairment in rapid auditory temporal processing in ASD that is associated with greater difficulties in language processing. Findings provide qualified support for temporal processing theories of ASD and highlight the need for future research testing the nature, extent, and universality of auditory temporal processing deficits in this population. Autism Res 2017, 10: 1845–1856. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Sensory symptoms are common in ASD. Temporal processing alterations are often implicated, but understudied. The ability to process rapid sensory information, particularly auditory input, is critical for language functioning. This study tested auditory and visual temporal processing in ASD and controls. Findings suggest that rapid auditory (but not visual) processing is impaired in ASD and related to language functioning. These results could provide mechanistic clues to understanding core symptoms and lead to novel intervention targets. En ligne : http://dx.doi.org/10.1002/aur.1820 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=322

Enhanced pitch discrimination in autistic children with unexpected bilingualism / Marie BELENGER ; Inge-Marie EIGSTI ; Mikhail KISSINE in Autism Research, 17-9 (September 2024)  

Public ISBD [article]  inAutism Research > 17-9 (September 2024) . - p.1844-1852 Titre : Enhanced pitch discrimination in autistic children with unexpected bilingualism Type de document : texte imprimé Auteurs : Marie BELENGER, Auteur ; Inge-Marie EIGSTI, Auteur ; Mikhail KISSINE, Auteur Article en page(s) : p.1844-1852 Langues : Anglais (eng) Mots-clés : autism  enhanced auditory perception  language acquisition  low-level processing  screen exposure  unexpected bilingualism Index. décimale : PER Périodiques Résumé : Abstract Some autistic children acquire foreign languages from exposure to screens. Such unexpected bilingualism (UB) is therefore not driven by social interaction, rather, language acquisition appears to rely on less socially mediated learning and other cognitive processes. We hypothesize that UB children may rely on other cues, such as acoustic cues, of the linguistic input. Previous research indicates enhanced pitch processing in some autistic children, often associated with language delays and difficulties in forming stable phonological categories due to sensitivity to subtle linguistic variations. We propose that repetitive screen-based input simplifies linguistic complexity, allowing focus on individual cues. This study hypothesizes that autistic UB children exhibit superior pitch discrimination compared with both autistic and non-autistic peers. From a sample of 46 autistic French-speaking children aged 9 to 16, 12 were considered as UB. These children, along with 45 non-autistic children, participated in a two-alternative forced-choice pitch discrimination task. They listened to pairs of pure tones, 50% of which differed by 3% (easy), 2% (medium), or 1% (hard). A stringent comparison of performance revealed that only the autistic UB group performed above chance for tone pairs that differed, across all conditions. This group demonstrated superior pitch discrimination relative to autistic and non-autistic peers. This study establishes the phenomenon of UB in autism and provides evidence for enhanced pitch discrimination in this group. Acute perception of auditory information, combined with repeated language content, may facilitate UB children's focus on phonetic features, and help acquire a language with no communicative support or motivation. En ligne : https://doi.org/10.1002/aur.3221 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=535 [article] Enhanced pitch discrimination in autistic children with unexpected bilingualism [texte imprimé] / Marie BELENGER, Auteur ; Inge-Marie EIGSTI, Auteur ; Mikhail KISSINE, Auteur . - p.1844-1852. Langues : Anglais (eng) in Autism Research > 17-9 (September 2024) . - p.1844-1852 Mots-clés : autism  enhanced auditory perception  language acquisition  low-level processing  screen exposure  unexpected bilingualism Index. décimale : PER Périodiques Résumé : Abstract Some autistic children acquire foreign languages from exposure to screens. Such unexpected bilingualism (UB) is therefore not driven by social interaction, rather, language acquisition appears to rely on less socially mediated learning and other cognitive processes. We hypothesize that UB children may rely on other cues, such as acoustic cues, of the linguistic input. Previous research indicates enhanced pitch processing in some autistic children, often associated with language delays and difficulties in forming stable phonological categories due to sensitivity to subtle linguistic variations. We propose that repetitive screen-based input simplifies linguistic complexity, allowing focus on individual cues. This study hypothesizes that autistic UB children exhibit superior pitch discrimination compared with both autistic and non-autistic peers. From a sample of 46 autistic French-speaking children aged 9 to 16, 12 were considered as UB. These children, along with 45 non-autistic children, participated in a two-alternative forced-choice pitch discrimination task. They listened to pairs of pure tones, 50% of which differed by 3% (easy), 2% (medium), or 1% (hard). A stringent comparison of performance revealed that only the autistic UB group performed above chance for tone pairs that differed, across all conditions. This group demonstrated superior pitch discrimination relative to autistic and non-autistic peers. This study establishes the phenomenon of UB in autism and provides evidence for enhanced pitch discrimination in this group. Acute perception of auditory information, combined with repeated language content, may facilitate UB children's focus on phonetic features, and help acquire a language with no communicative support or motivation. En ligne : https://doi.org/10.1002/aur.3221 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=535

Structure Mapping in Autism Spectrum Disorder: Levels of Information Processing and Relations to Executive Functions / Orit E. HETZRONI in Journal of Autism and Developmental Disorders, 48-3 (March 2018)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 48-3 (March 2018) . - p.824-833 Titre : Structure Mapping in Autism Spectrum Disorder: Levels of Information Processing and Relations to Executive Functions Type de document : texte imprimé Auteurs : Orit E. HETZRONI, Auteur ; Kiril SHALAHEVICH, Auteur Année de publication : 2018 Article en page(s) : p.824-833 Langues : Anglais (eng) Mots-clés : Asd  Level of processing  Perceptual relations  Structure mapping  Systematicity principle Index. décimale : PER Périodiques Résumé : Analogical reasoning was investigated among children with autism spectrum disorders (ASD) without intellectual disabilities and typical development (TD). Children were asked to select one of two targets in two conditions: (1) with and without spatial structure similarity; (2) with and without a perceptual distractor. Results demonstrate that children with ASD were able to select targets based on structural similarity, but this ability decreased to chance level when presented with a perceptual distractor. Everyday executive functions were positively correlated with structural selections among children with ASD. Results suggest that although children with ASD were able to select based on systematicity principle, perceptual distractor decreased their selection so that their cognitive system produced less structure similarities, that negatively affects spatial analogical reasoning. En ligne : https://doi.org/10.1007/s10803-017-3376-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=338 [article] Structure Mapping in Autism Spectrum Disorder: Levels of Information Processing and Relations to Executive Functions [texte imprimé] / Orit E. HETZRONI, Auteur ; Kiril SHALAHEVICH, Auteur . - 2018 . - p.824-833. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 48-3 (March 2018) . - p.824-833 Mots-clés : Asd  Level of processing  Perceptual relations  Structure mapping  Systematicity principle Index. décimale : PER Périodiques Résumé : Analogical reasoning was investigated among children with autism spectrum disorders (ASD) without intellectual disabilities and typical development (TD). Children were asked to select one of two targets in two conditions: (1) with and without spatial structure similarity; (2) with and without a perceptual distractor. Results demonstrate that children with ASD were able to select targets based on structural similarity, but this ability decreased to chance level when presented with a perceptual distractor. Everyday executive functions were positively correlated with structural selections among children with ASD. Results suggest that although children with ASD were able to select based on systematicity principle, perceptual distractor decreased their selection so that their cognitive system produced less structure similarities, that negatively affects spatial analogical reasoning. En ligne : https://doi.org/10.1007/s10803-017-3376-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=338

Alterations in electrophysiological indices of perceptual processing and discrimination are associated with co-occurring emotional and behavioural problems in adolescents with autism spectrum disorder / Virginia CARTER LENO in Molecular Autism, 9 (2018)  

Public ISBD [article]  inMolecular Autism > 9 (2018) . - 50p. Titre : Alterations in electrophysiological indices of perceptual processing and discrimination are associated with co-occurring emotional and behavioural problems in adolescents with autism spectrum disorder Type de document : texte imprimé Auteurs : Virginia CARTER LENO, Auteur ; Susie CHANDLER, Auteur ; Pippa WHITE, Auteur ; Isabel YORKE, Auteur ; Tony CHARMAN, Auteur ; Andrew PICKLES, Auteur ; Emily SIMONOFF, Auteur Article en page(s) : 50p. Langues : Anglais (eng) Mots-clés : asd  Comorbidity  eeg  erp  IAMHealth  Perceptual processing  Psychopathology  Sensory  approved by Camden and King's Cross Ethics Sub-Committee (14/LO/2098).Not  applicable.AP receives royalties from the Social Communication Questionnaire. The  other authors declare that they have no competing interests.Springer Nature  remains neutral with regard to jurisdictional claims in published maps and  institutional affiliations. Index. décimale : PER Périodiques Résumé : Background: Many young people with autism spectrum disorder (ASD) experience emotional and behavioural problems. However, the causes of these co-occurring difficulties are not well understood. Perceptual processing atypicalities are also often reported in individuals with ASD, but how these relate to co-occurring emotional and behavioural problems remains unclear, and few studies have used objective measurement of perceptual processing. Methods: Event-related potentials (ERPs) were recorded in response to both standard and deviant stimuli (which varied in pitch) in an auditory oddball paradigm in adolescents (mean age of 13.56 years, SD = 1.12, range = 11.40-15.70) with ASD (n = 43) with a wide range of IQ (mean IQ of 84.14, SD = 24.24, range 27-129). Response to deviant as compared to standard stimuli (as indexed by the mismatch negativity (MMN)) and response to repeated presentations of standard stimuli (habituation) were measured. Multivariate regression tested the association between neural indices of perceptual processing and co-occurring emotional and behavioural problems. Results: Greater sensitivity to changes in pitch in incoming auditory information (discrimination), as indexed by increased MMN amplitude, was associated with higher levels of parent-rated behaviour problems. MMN amplitude also showed a trend positive correlation with parent-rated sensory hyper-sensitivity. Conversely, greater habituation at the later N2 component was associated with higher levels of emotional problems. Upon more detailed analyses, this appeared to be driven by a selectively greater ERP response to the first (but not the second or third) standard stimuli that followed deviant stimuli. A similar pattern of association was found with other measures of anxiety. All results remained in covariation analyses controlling for age, sex and IQ, although the association between MMN amplitude and behaviour problems became non-significant when controlling for ASD severity. Conclusions: Findings suggest that alterations in mechanisms of perceptual processing and discrimination may be important for understanding co-occurring emotional and behavioural problems in young people with ASD. En ligne : https://dx.doi.org/10.1186/s13229-018-0236-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371 [article] Alterations in electrophysiological indices of perceptual processing and discrimination are associated with co-occurring emotional and behavioural problems in adolescents with autism spectrum disorder [texte imprimé] / Virginia CARTER LENO, Auteur ; Susie CHANDLER, Auteur ; Pippa WHITE, Auteur ; Isabel YORKE, Auteur ; Tony CHARMAN, Auteur ; Andrew PICKLES, Auteur ; Emily SIMONOFF, Auteur . - 50p. Langues : Anglais (eng) in Molecular Autism > 9 (2018) . - 50p. Mots-clés : asd  Comorbidity  eeg  erp  IAMHealth  Perceptual processing  Psychopathology  Sensory  approved by Camden and King's Cross Ethics Sub-Committee (14/LO/2098).Not  applicable.AP receives royalties from the Social Communication Questionnaire. The  other authors declare that they have no competing interests.Springer Nature  remains neutral with regard to jurisdictional claims in published maps and  institutional affiliations. Index. décimale : PER Périodiques Résumé : Background: Many young people with autism spectrum disorder (ASD) experience emotional and behavioural problems. However, the causes of these co-occurring difficulties are not well understood. Perceptual processing atypicalities are also often reported in individuals with ASD, but how these relate to co-occurring emotional and behavioural problems remains unclear, and few studies have used objective measurement of perceptual processing. Methods: Event-related potentials (ERPs) were recorded in response to both standard and deviant stimuli (which varied in pitch) in an auditory oddball paradigm in adolescents (mean age of 13.56 years, SD = 1.12, range = 11.40-15.70) with ASD (n = 43) with a wide range of IQ (mean IQ of 84.14, SD = 24.24, range 27-129). Response to deviant as compared to standard stimuli (as indexed by the mismatch negativity (MMN)) and response to repeated presentations of standard stimuli (habituation) were measured. Multivariate regression tested the association between neural indices of perceptual processing and co-occurring emotional and behavioural problems. Results: Greater sensitivity to changes in pitch in incoming auditory information (discrimination), as indexed by increased MMN amplitude, was associated with higher levels of parent-rated behaviour problems. MMN amplitude also showed a trend positive correlation with parent-rated sensory hyper-sensitivity. Conversely, greater habituation at the later N2 component was associated with higher levels of emotional problems. Upon more detailed analyses, this appeared to be driven by a selectively greater ERP response to the first (but not the second or third) standard stimuli that followed deviant stimuli. A similar pattern of association was found with other measures of anxiety. All results remained in covariation analyses controlling for age, sex and IQ, although the association between MMN amplitude and behaviour problems became non-significant when controlling for ASD severity. Conclusions: Findings suggest that alterations in mechanisms of perceptual processing and discrimination may be important for understanding co-occurring emotional and behavioural problems in young people with ASD. En ligne : https://dx.doi.org/10.1186/s13229-018-0236-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371

Altered category learning and reduced generalization in autistic adults / Jaana VAN OVERWALLE ; Stephanie VAN DER DONCK ; Birte GEUSENS ; Bart BOETS ; Johan WAGEMANS in Autism Research, 18-2 (February 2025)  

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Atypical development of face and greeble recognition in autism / K. Suzanne SCHERF in Journal of Child Psychology and Psychiatry, 49-8 (August 2008)  

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Auditory perceptual learning in autistic adults / Samra ALISPAHIC in Autism Research, 15-8 (August 2022)  

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Children With Autism Show Reduced Somatosensory Response: An MEG Study / Elysa J. MARCO in Autism Research, 5-5 (October 2012)  

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A cross-task comparison on visuospatial processing in autism spectrum disorders / Ramona CARDILLO in Autism, 24-3 (April 2020)  

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