Age and Sensory Processing Abnormalities Predict Declines in Encoding and Recall of Temporally Manipulated Speech in High-Functioning Adults with ASD / Jennifer L. MAYER in Autism Research, 7-1 (February 2014)  

Public ISBD [article]  inAutism Research > 7-1 (February 2014) . - p.40-49 Titre : Age and Sensory Processing Abnormalities Predict Declines in Encoding and Recall of Temporally Manipulated Speech in High-Functioning Adults with ASD Type de document : Texte imprimé et/ou numérique Auteurs : Jennifer L. MAYER, Auteur ; Pamela HEATON, Auteur Article en page(s) : p.40-49 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorders  Speech Perception  Auditory Processing  Aging Index. décimale : PER Périodiques Résumé : While temporal and perceptual processing abnormalities, identified in a number of electrophysiological and brain imaging studies of individuals with (ASD), are likely to impact on speech perception, surprisingly little is known about the behavioral outcomes of such abnormalities. It has been hypothesized that rapid temporal processing deficits may be linked to impaired language development through interference with acoustic information during speech perception. The present study aimed to investigate the impact of temporal changes on encoding and recall of speech, and the associated cognitive, clinical, and behavioral correlates in adults with ASD. Research carried out with typically developing (TD) adults has shown that word recall diminishes as the speed of speech increases, and it was predicted that the magnitude of this effect would be far greater in those with ASD because of a preexisting rapid temporal processing deficit. Nineteen high-functioning adults with ASD, and age- and intelligence-matched TD controls performed verbatim recall of temporally manipulated sentences. Reduced levels of word recall in response to increases in presentation speed were observed, and this effect was greater in the older participants in the ASD group than in the control group. This is the first study to show that both sensory abnormalities and aging impact on speech encoding in ASD. Auditory processing deficits in ASD may be indicative of an association with the sensory abnormalities and social and communication impairments characterizing the disorder. En ligne : http://dx.doi.org/10.1002/aur.1333 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=227 [article] Age and Sensory Processing Abnormalities Predict Declines in Encoding and Recall of Temporally Manipulated Speech in High-Functioning Adults with ASD [Texte imprimé et/ou numérique] / Jennifer L. MAYER, Auteur ; Pamela HEATON, Auteur . - p.40-49. Langues : Anglais (eng) in Autism Research > 7-1 (February 2014) . - p.40-49 Mots-clés : Autism Spectrum Disorders  Speech Perception  Auditory Processing  Aging Index. décimale : PER Périodiques Résumé : While temporal and perceptual processing abnormalities, identified in a number of electrophysiological and brain imaging studies of individuals with (ASD), are likely to impact on speech perception, surprisingly little is known about the behavioral outcomes of such abnormalities. It has been hypothesized that rapid temporal processing deficits may be linked to impaired language development through interference with acoustic information during speech perception. The present study aimed to investigate the impact of temporal changes on encoding and recall of speech, and the associated cognitive, clinical, and behavioral correlates in adults with ASD. Research carried out with typically developing (TD) adults has shown that word recall diminishes as the speed of speech increases, and it was predicted that the magnitude of this effect would be far greater in those with ASD because of a preexisting rapid temporal processing deficit. Nineteen high-functioning adults with ASD, and age- and intelligence-matched TD controls performed verbatim recall of temporally manipulated sentences. Reduced levels of word recall in response to increases in presentation speed were observed, and this effect was greater in the older participants in the ASD group than in the control group. This is the first study to show that both sensory abnormalities and aging impact on speech encoding in ASD. Auditory processing deficits in ASD may be indicative of an association with the sensory abnormalities and social and communication impairments characterizing the disorder. En ligne : http://dx.doi.org/10.1002/aur.1333 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=227

Do Children With Autism Re-Enact Object Movements Rather Than Imitate Demonstrator Actions? / Deborah M. CUSTANCE in Autism Research, 7-1 (February 2014)  

Public ISBD [article]  inAutism Research > 7-1 (February 2014) . - p.28-39 Titre : Do Children With Autism Re-Enact Object Movements Rather Than Imitate Demonstrator Actions? Type de document : Texte imprimé et/ou numérique Auteurs : Deborah M. CUSTANCE, Auteur ; Jennifer L. MAYER, Auteur ; Emmelianna KUMAR, Auteur ; Elisabeth HILL, Auteur ; Pamela HEATON, Auteur Article en page(s) : p.28-39 Langues : Anglais (eng) Mots-clés : autism  imitation  emulation  transitive Index. décimale : PER Périodiques Résumé : It has been suggested that autism-specific imitative deficits may be reduced or even spared in object-related activities. However, most previous research has not sufficiently distinguished object movement reenactment (learning about the ways in which object move) from imitation (learning about the topography of demonstrated actions). Twenty children with autism (CWA) and 20 typically developing children (TDC) were presented with puzzle boxes containing prizes. Test objects and experimental conditions were designed to isolate object- and action-related aspects of demonstrations. There were four types of video demonstrations: (a) a full demonstration by an adult; (b) a ghost demonstration with object movements alone; (c) mimed solutions demonstrated adjacent to the objects; and (d) random actions performed on the surface of the objects. There were no significant between-group differences in the degree to which CWA and TDC matched the full demonstrations, the actual demonstrations or in their times to first solution in any of the conditions. Although there was no clear imitative deficit in the CWA, regression analyses were conducted to explore in more detail whether diagnosis, verbal intelligence quotient (VIQ), nonverbal IQ NVIQ, age or motor coordination predicted performance. The results are discussed in relation to the use of extrinsic vs. intrinsic rewards and the interplay between motor coordination and the relative rigidity vs. pliability of objects. En ligne : http://dx.doi.org/10.1002/aur.1328 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=227 [article] Do Children With Autism Re-Enact Object Movements Rather Than Imitate Demonstrator Actions? [Texte imprimé et/ou numérique] / Deborah M. CUSTANCE, Auteur ; Jennifer L. MAYER, Auteur ; Emmelianna KUMAR, Auteur ; Elisabeth HILL, Auteur ; Pamela HEATON, Auteur . - p.28-39. Langues : Anglais (eng) in Autism Research > 7-1 (February 2014) . - p.28-39 Mots-clés : autism  imitation  emulation  transitive Index. décimale : PER Périodiques Résumé : It has been suggested that autism-specific imitative deficits may be reduced or even spared in object-related activities. However, most previous research has not sufficiently distinguished object movement reenactment (learning about the ways in which object move) from imitation (learning about the topography of demonstrated actions). Twenty children with autism (CWA) and 20 typically developing children (TDC) were presented with puzzle boxes containing prizes. Test objects and experimental conditions were designed to isolate object- and action-related aspects of demonstrations. There were four types of video demonstrations: (a) a full demonstration by an adult; (b) a ghost demonstration with object movements alone; (c) mimed solutions demonstrated adjacent to the objects; and (d) random actions performed on the surface of the objects. There were no significant between-group differences in the degree to which CWA and TDC matched the full demonstrations, the actual demonstrations or in their times to first solution in any of the conditions. Although there was no clear imitative deficit in the CWA, regression analyses were conducted to explore in more detail whether diagnosis, verbal intelligence quotient (VIQ), nonverbal IQ NVIQ, age or motor coordination predicted performance. The results are discussed in relation to the use of extrinsic vs. intrinsic rewards and the interplay between motor coordination and the relative rigidity vs. pliability of objects. En ligne : http://dx.doi.org/10.1002/aur.1328 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=227

Mapping the Developmental Trajectory and Correlates of Enhanced Pitch Perception on Speech Processing in Adults with ASD / Jennifer L. MAYER in Journal of Autism and Developmental Disorders, 46-5 (May 2016)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 46-5 (May 2016) . - p.1562-1573 Titre : Mapping the Developmental Trajectory and Correlates of Enhanced Pitch Perception on Speech Processing in Adults with ASD Type de document : Texte imprimé et/ou numérique Auteurs : Jennifer L. MAYER, Auteur ; Ian HANNENT, Auteur ; Pamela F. HEATON, Auteur Article en page(s) : p.1562-1573 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Pitch discrimination  Auditory processing  Developmental trajectory Index. décimale : PER Périodiques Résumé : Whilst enhanced perception has been widely reported in individuals with Autism Spectrum Disorders (ASDs), relatively little is known about the developmental trajectory and impact of atypical auditory processing on speech perception in intellectually high-functioning adults with ASD. This paper presents data on perception of complex tones and speech pitch in adult participants with high-functioning ASD and typical development, and compares these with pre-existing data using the same paradigm with groups of children and adolescents with and without ASD. As perceptual processing abnormalities are likely to influence behavioural performance, regression analyses were carried out on the adult data set. The findings revealed markedly different pitch discrimination trajectories and language correlates across diagnostic groups. While pitch discrimination increased with age and correlated with receptive vocabulary in groups without ASD, it was enhanced in childhood and stable across development in ASD. Pitch discrimination scores did not correlate with receptive vocabulary scores in the ASD group and for adults with ASD superior pitch perception was associated with sensory atypicalities and diagnostic measures of symptom severity. We conclude that the development of pitch discrimination, and its associated mechanisms markedly distinguish those with and without ASD. En ligne : http://dx.doi.org/10.1007/s10803-014-2207-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=288 [article] Mapping the Developmental Trajectory and Correlates of Enhanced Pitch Perception on Speech Processing in Adults with ASD [Texte imprimé et/ou numérique] / Jennifer L. MAYER, Auteur ; Ian HANNENT, Auteur ; Pamela F. HEATON, Auteur . - p.1562-1573. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 46-5 (May 2016) . - p.1562-1573 Mots-clés : Autism spectrum disorders  Pitch discrimination  Auditory processing  Developmental trajectory Index. décimale : PER Périodiques Résumé : Whilst enhanced perception has been widely reported in individuals with Autism Spectrum Disorders (ASDs), relatively little is known about the developmental trajectory and impact of atypical auditory processing on speech perception in intellectually high-functioning adults with ASD. This paper presents data on perception of complex tones and speech pitch in adult participants with high-functioning ASD and typical development, and compares these with pre-existing data using the same paradigm with groups of children and adolescents with and without ASD. As perceptual processing abnormalities are likely to influence behavioural performance, regression analyses were carried out on the adult data set. The findings revealed markedly different pitch discrimination trajectories and language correlates across diagnostic groups. While pitch discrimination increased with age and correlated with receptive vocabulary in groups without ASD, it was enhanced in childhood and stable across development in ASD. Pitch discrimination scores did not correlate with receptive vocabulary scores in the ASD group and for adults with ASD superior pitch perception was associated with sensory atypicalities and diagnostic measures of symptom severity. We conclude that the development of pitch discrimination, and its associated mechanisms markedly distinguish those with and without ASD. En ligne : http://dx.doi.org/10.1007/s10803-014-2207-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=288

The Relationship Between Autistic Traits and Atypical Sensory Functioning in Neurotypical and ASD Adults: A Spectrum Approach / Jennifer L. MAYER in Journal of Autism and Developmental Disorders, 47-2 (February 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-2 (February 2017) . - p.316-327 Titre : The Relationship Between Autistic Traits and Atypical Sensory Functioning in Neurotypical and ASD Adults: A Spectrum Approach Type de document : Texte imprimé et/ou numérique Auteurs : Jennifer L. MAYER, Auteur Article en page(s) : p.316-327 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Autistic traits  Sensory processing  Broader autism phenotype  Autism spectrum quotient Index. décimale : PER Périodiques Résumé : Sensory processing atypicalities are a common feature in Autism Spectrum Disorders (ASD) and have previously been linked to a range of behaviours in individuals with ASD and atypical neurological development. More recently research has demonstrated a relationship between autistic traits in the neurotypical (NT) population and increased levels of atypical sensory behaviours. The aim of the present study is to extend previous research by examining specific patterns across aspects of autistic traits and sensory behaviours within both ASD and NT populations. The present study recruited 580 NT adults and 42 high-functioning ASD adults with a confirmed diagnosis to investigate the relationship between specific aspects of autistic traits and sensory processing using the subscales of the autism spectrum quotient (AQ) and adult/adolescent sensory profile (AASP). Results showed a significant relationship between all subscales except for attention to detail and imagination on the AQ and provided the first evidence that the strength and pattern of this relationship is identical between NT and ASD adults. These data also provided support for the broader autism phenotype, uncovering a clear progression of sensory atypicalities in line with an increase in autistic traits, regardless of diagnostic status, which has potential implications for the spectrum approach to ASD and how sensory behaviours across the whole of the neurotypical population are conceptualised. En ligne : http://dx.doi.org/10.1007/s10803-016-2948-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=303 [article] The Relationship Between Autistic Traits and Atypical Sensory Functioning in Neurotypical and ASD Adults: A Spectrum Approach [Texte imprimé et/ou numérique] / Jennifer L. MAYER, Auteur . - p.316-327. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-2 (February 2017) . - p.316-327 Mots-clés : Autism spectrum disorders  Autistic traits  Sensory processing  Broader autism phenotype  Autism spectrum quotient Index. décimale : PER Périodiques Résumé : Sensory processing atypicalities are a common feature in Autism Spectrum Disorders (ASD) and have previously been linked to a range of behaviours in individuals with ASD and atypical neurological development. More recently research has demonstrated a relationship between autistic traits in the neurotypical (NT) population and increased levels of atypical sensory behaviours. The aim of the present study is to extend previous research by examining specific patterns across aspects of autistic traits and sensory behaviours within both ASD and NT populations. The present study recruited 580 NT adults and 42 high-functioning ASD adults with a confirmed diagnosis to investigate the relationship between specific aspects of autistic traits and sensory processing using the subscales of the autism spectrum quotient (AQ) and adult/adolescent sensory profile (AASP). Results showed a significant relationship between all subscales except for attention to detail and imagination on the AQ and provided the first evidence that the strength and pattern of this relationship is identical between NT and ASD adults. These data also provided support for the broader autism phenotype, uncovering a clear progression of sensory atypicalities in line with an increase in autistic traits, regardless of diagnostic status, which has potential implications for the spectrum approach to ASD and how sensory behaviours across the whole of the neurotypical population are conceptualised. En ligne : http://dx.doi.org/10.1007/s10803-016-2948-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=303

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