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Autonomic and Electrophysiological Evidence for Reduced Auditory Habituation in Autism / T. K. GANDHI in Journal of Autism and Developmental Disorders, 51-7 (July 2021)
[article]
Titre : Autonomic and Electrophysiological Evidence for Reduced Auditory Habituation in Autism Type de document : Texte imprimé et/ou numérique Auteurs : T. K. GANDHI, Auteur ; K. TSOURIDES, Auteur ; N. SINGHAL, Auteur ; A. CARDINAUX, Auteur ; W. JAMAL, Auteur ; D. PANTAZIS, Auteur ; M. KJELGAARD, Auteur ; P. SINHA, Auteur Article en page(s) : p.2218-2228 Langues : Anglais (eng) Mots-clés : Adolescent Autistic Disorder/physiopathology Case-Control Studies Child Female Galvanic Skin Response Habituation, Psychophysiologic/physiology Humans Magnetoencephalography Male Perception/physiology Young Adult Autism Gsr Habituation Hypersensitivities Meg Index. décimale : PER Périodiques Résumé : It is estimated that nearly 90% of children on the autism spectrum exhibit sensory atypicalities. What aspects of sensory processing are affected in autism? Although sensory processing can be studied along multiple dimensions, two of the most basic ones involve examining instantaneous sensory responses and how the responses change over time. These correspond to the dimensions of 'sensitivity' and 'habituation'. Results thus far have indicated that autistic individuals do not differ systematically from controls in sensory acuity/sensitivity. However, data from studies of habituation have been equivocal. We have studied habituation in autism using two measures: galvanic skin response (GSR) and magneto-encephalography (MEG). We report data from two independent studies. The first study, was conducted with 13 autistic and 13 age-matched neurotypical young adults and used GSR to assess response to an extended metronomic sequence. The second study involved 24 participants (12 with an ASD diagnosis), different from those in study 1, spanning the pre-adolescent to young adult age range, and used MEG. Both studies reveal consistent patterns of reduced habituation in autistic participants. These results suggest that autism, through mechanisms that are yet to be elucidated, compromises a fundamental aspect of sensory processing, at least in the auditory domain. We discuss the implications for understanding sensory hypersensitivities, a hallmark phenotypic feature of autism, recently proposed theoretical accounts, and potential relevance for early detection of risk for autism. En ligne : http://dx.doi.org/10.1007/s10803-020-04636-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=452
in Journal of Autism and Developmental Disorders > 51-7 (July 2021) . - p.2218-2228[article] Autonomic and Electrophysiological Evidence for Reduced Auditory Habituation in Autism [Texte imprimé et/ou numérique] / T. K. GANDHI, Auteur ; K. TSOURIDES, Auteur ; N. SINGHAL, Auteur ; A. CARDINAUX, Auteur ; W. JAMAL, Auteur ; D. PANTAZIS, Auteur ; M. KJELGAARD, Auteur ; P. SINHA, Auteur . - p.2218-2228.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 51-7 (July 2021) . - p.2218-2228
Mots-clés : Adolescent Autistic Disorder/physiopathology Case-Control Studies Child Female Galvanic Skin Response Habituation, Psychophysiologic/physiology Humans Magnetoencephalography Male Perception/physiology Young Adult Autism Gsr Habituation Hypersensitivities Meg Index. décimale : PER Périodiques Résumé : It is estimated that nearly 90% of children on the autism spectrum exhibit sensory atypicalities. What aspects of sensory processing are affected in autism? Although sensory processing can be studied along multiple dimensions, two of the most basic ones involve examining instantaneous sensory responses and how the responses change over time. These correspond to the dimensions of 'sensitivity' and 'habituation'. Results thus far have indicated that autistic individuals do not differ systematically from controls in sensory acuity/sensitivity. However, data from studies of habituation have been equivocal. We have studied habituation in autism using two measures: galvanic skin response (GSR) and magneto-encephalography (MEG). We report data from two independent studies. The first study, was conducted with 13 autistic and 13 age-matched neurotypical young adults and used GSR to assess response to an extended metronomic sequence. The second study involved 24 participants (12 with an ASD diagnosis), different from those in study 1, spanning the pre-adolescent to young adult age range, and used MEG. Both studies reveal consistent patterns of reduced habituation in autistic participants. These results suggest that autism, through mechanisms that are yet to be elucidated, compromises a fundamental aspect of sensory processing, at least in the auditory domain. We discuss the implications for understanding sensory hypersensitivities, a hallmark phenotypic feature of autism, recently proposed theoretical accounts, and potential relevance for early detection of risk for autism. En ligne : http://dx.doi.org/10.1007/s10803-020-04636-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=452 Name recognition in autism: EEG evidence of altered patterns of brain activity and connectivity / A. NOWICKA in Molecular Autism, 7 (2016)
[article]
Titre : Name recognition in autism: EEG evidence of altered patterns of brain activity and connectivity Type de document : Texte imprimé et/ou numérique Auteurs : A. NOWICKA, Auteur ; H. B. CYGAN, Auteur ; P. TACIKOWSKI, Auteur ; P. OSTASZEWSKI, Auteur ; R. KUS, Auteur Article en page(s) : 38p. Langues : Anglais (eng) Mots-clés : Adolescent Adult Autistic Disorder/physiopathology Brain/physiology Electroencephalography Evoked Potentials Humans Male Names Recognition (Psychology) Young Adult Autism spectrum disorder Coherence Directed transfer function Erp Event-related desynchronization and synchronization Index. décimale : PER Périodiques Résumé : BACKGROUND: Impaired orienting to social stimuli is one of the core early symptoms of autism spectrum disorder (ASD). However, in contrast to faces, name processing has rarely been studied in individuals with ASD. Here, we investigated brain activity and functional connectivity associated with recognition of names in the high-functioning ASD group and in the control group. METHODS: EEG was recorded in 15 young males with ASD and 15 matched one-to-one control individuals. EEG data were analyzed with the event-related potential (ERP), event-related desynchronization and event-related synchronization (ERD/S), as well as coherence and direct transfer function (DTF) methods. Four categories of names were presented visually: one's own, close-other's, famous, and unknown. RESULTS: Differences between the ASD and control groups were found for ERP, coherence, and DTF. In individuals with ASD, P300 (a positive ERP component) to own-name and to a close-other's name were similar whereas in control participants, P300 to own-name was enhanced when compared to all other names. Analysis of coherence and DTF revealed disruption of fronto-posterior task-related connectivity in individuals with ASD within the beta range frequencies. Moreover, DTF indicated the directionality of those impaired connections-they were going from parieto-occipital to frontal regions. DTF also showed inter-group differences in short-range connectivity: weaker connections within the frontal region and stronger connections within the occipital region in the ASD group in comparison to the control group. CONCLUSIONS: Our findings suggest a lack of the self-preference effect and impaired functioning of the attentional network during recognition of visually presented names in individuals with ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0102-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328
in Molecular Autism > 7 (2016) . - 38p.[article] Name recognition in autism: EEG evidence of altered patterns of brain activity and connectivity [Texte imprimé et/ou numérique] / A. NOWICKA, Auteur ; H. B. CYGAN, Auteur ; P. TACIKOWSKI, Auteur ; P. OSTASZEWSKI, Auteur ; R. KUS, Auteur . - 38p.
Langues : Anglais (eng)
in Molecular Autism > 7 (2016) . - 38p.
Mots-clés : Adolescent Adult Autistic Disorder/physiopathology Brain/physiology Electroencephalography Evoked Potentials Humans Male Names Recognition (Psychology) Young Adult Autism spectrum disorder Coherence Directed transfer function Erp Event-related desynchronization and synchronization Index. décimale : PER Périodiques Résumé : BACKGROUND: Impaired orienting to social stimuli is one of the core early symptoms of autism spectrum disorder (ASD). However, in contrast to faces, name processing has rarely been studied in individuals with ASD. Here, we investigated brain activity and functional connectivity associated with recognition of names in the high-functioning ASD group and in the control group. METHODS: EEG was recorded in 15 young males with ASD and 15 matched one-to-one control individuals. EEG data were analyzed with the event-related potential (ERP), event-related desynchronization and event-related synchronization (ERD/S), as well as coherence and direct transfer function (DTF) methods. Four categories of names were presented visually: one's own, close-other's, famous, and unknown. RESULTS: Differences between the ASD and control groups were found for ERP, coherence, and DTF. In individuals with ASD, P300 (a positive ERP component) to own-name and to a close-other's name were similar whereas in control participants, P300 to own-name was enhanced when compared to all other names. Analysis of coherence and DTF revealed disruption of fronto-posterior task-related connectivity in individuals with ASD within the beta range frequencies. Moreover, DTF indicated the directionality of those impaired connections-they were going from parieto-occipital to frontal regions. DTF also showed inter-group differences in short-range connectivity: weaker connections within the frontal region and stronger connections within the occipital region in the ASD group in comparison to the control group. CONCLUSIONS: Our findings suggest a lack of the self-preference effect and impaired functioning of the attentional network during recognition of visually presented names in individuals with ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0102-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328 Others' emotions teach, but not in autism: an eye-tracking pupillometry study / H. J. NUSKE in Molecular Autism, 7 (2016)
[article]
Titre : Others' emotions teach, but not in autism: an eye-tracking pupillometry study Type de document : Texte imprimé et/ou numérique Auteurs : H. J. NUSKE, Auteur ; G. VIVANTI, Auteur ; Cheryl DISSANAYAKE, Auteur Article en page(s) : 36p. Langues : Anglais (eng) Mots-clés : Attention Autistic Disorder/physiopathology Child, Preschool Emotions/physiology Facial Expression Female Humans Male Pupil/physiology Autism Autonomic nervous system Emotion Eye-tracking pupillometry Social learning Social-emotional calibration Index. décimale : PER Périodiques Résumé : BACKGROUND: Much research has investigated deficit in emotional reactivity to others in people with autism, but scant attention has been paid to how this deficit affects their own reactions to features of their environment (objects, events, practices, etc.). The present study presents a preliminary analysis on whether calibrating one's own emotional reactions to others' emotional reactions about features of the world, a process we term social-emotional calibration, is disrupted in autism. METHODS: To examine this process, we used a novel eye-tracking pupillometry paradigm in which we showed 20 preschoolers with autism and 20 matched typically developing preschoolers' videos of an actor opening a box and reacting to the occluded object inside, with fear or happiness. We expected preschoolers to come to perceive the box as containing a positive or threatening stimulus through emotionally calibrating to the actor's emotional expressions. Children's mean pupil diameter (indicating emotional reactivity) was measured whilst viewing an up-close, visually identical image of the box before and then after the scene, and this difference was taken as an index of social-emotional calibration and compared between groups. RESULTS: Whilst the typically developing preschoolers responded more emotionally to the box after, compared to before the scene (as indexed by an increase in pupil size), those with autism did not, suggesting their reaction to the object was not affected by the actor's emotional expressions. The groups did not differ in looking duration to the emotional expressions; thus, the pupil dilation findings cannot be explained by differences in visual attention. More social-emotional calibration on the happy condition was associated with less severe autism symptoms. CONCLUSIONS: Through the measurement of physiological reactivity, findings suggest social-emotional calibration is diminished in children with autism, with calibration to others' positive emotions as particularly important. This study highlights a possible mechanism by which individuals with autism develop idiosyncratic reactions to features of their environment, which is likely to impact their active and harmonious participation on social and cultural practices from infancy, throughout the lifespan. More research is needed to examine the mediators and developmental sequence of this tendency to emotionally calibrate to others' feelings about the world. En ligne : http://dx.doi.org/10.1186/s13229-016-0098-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329
in Molecular Autism > 7 (2016) . - 36p.[article] Others' emotions teach, but not in autism: an eye-tracking pupillometry study [Texte imprimé et/ou numérique] / H. J. NUSKE, Auteur ; G. VIVANTI, Auteur ; Cheryl DISSANAYAKE, Auteur . - 36p.
Langues : Anglais (eng)
in Molecular Autism > 7 (2016) . - 36p.
Mots-clés : Attention Autistic Disorder/physiopathology Child, Preschool Emotions/physiology Facial Expression Female Humans Male Pupil/physiology Autism Autonomic nervous system Emotion Eye-tracking pupillometry Social learning Social-emotional calibration Index. décimale : PER Périodiques Résumé : BACKGROUND: Much research has investigated deficit in emotional reactivity to others in people with autism, but scant attention has been paid to how this deficit affects their own reactions to features of their environment (objects, events, practices, etc.). The present study presents a preliminary analysis on whether calibrating one's own emotional reactions to others' emotional reactions about features of the world, a process we term social-emotional calibration, is disrupted in autism. METHODS: To examine this process, we used a novel eye-tracking pupillometry paradigm in which we showed 20 preschoolers with autism and 20 matched typically developing preschoolers' videos of an actor opening a box and reacting to the occluded object inside, with fear or happiness. We expected preschoolers to come to perceive the box as containing a positive or threatening stimulus through emotionally calibrating to the actor's emotional expressions. Children's mean pupil diameter (indicating emotional reactivity) was measured whilst viewing an up-close, visually identical image of the box before and then after the scene, and this difference was taken as an index of social-emotional calibration and compared between groups. RESULTS: Whilst the typically developing preschoolers responded more emotionally to the box after, compared to before the scene (as indexed by an increase in pupil size), those with autism did not, suggesting their reaction to the object was not affected by the actor's emotional expressions. The groups did not differ in looking duration to the emotional expressions; thus, the pupil dilation findings cannot be explained by differences in visual attention. More social-emotional calibration on the happy condition was associated with less severe autism symptoms. CONCLUSIONS: Through the measurement of physiological reactivity, findings suggest social-emotional calibration is diminished in children with autism, with calibration to others' positive emotions as particularly important. This study highlights a possible mechanism by which individuals with autism develop idiosyncratic reactions to features of their environment, which is likely to impact their active and harmonious participation on social and cultural practices from infancy, throughout the lifespan. More research is needed to examine the mediators and developmental sequence of this tendency to emotionally calibrate to others' feelings about the world. En ligne : http://dx.doi.org/10.1186/s13229-016-0098-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329 Tactile cortical responses and association with tactile reactivity in young children on the autism spectrum / S. ESPENHAHN in Molecular Autism, 12 (2021)
[article]
Titre : Tactile cortical responses and association with tactile reactivity in young children on the autism spectrum Type de document : Texte imprimé et/ou numérique Auteurs : S. ESPENHAHN, Auteur ; K. J. GODFREY, Auteur ; S. KAUR, Auteur ; M. ROSS, Auteur ; N. NATH, Auteur ; O. DMITRIEVA, Auteur ; C. MCMORRIS, Auteur ; F. CORTESE, Auteur ; C. WRIGHT, Auteur ; K. MURIAS, Auteur ; D. DEWEY, Auteur ; A. B. PROTZNER, Auteur ; A. MCCRIMMON, Auteur ; S. BRAY, Auteur ; A. D. HARRIS, Auteur Article en page(s) : 26 p. Langues : Anglais (eng) Mots-clés : Autistic Disorder/physiopathology Child Child, Preschool Electroencephalography Evoked Potentials, Somatosensory Female Humans Male Somatosensory Cortex/physiopathology Touch Adaptation Autism Children Eeg Erp Somatosensory-evoked potentials Tactile sensitivities Tactile stimulation Index. décimale : PER Périodiques Résumé : BACKGROUND: Unusual behavioral reactions to sensory stimuli are frequently reported in individuals on the autism spectrum (AS). Despite the early emergence of sensory features ( En ligne : http://dx.doi.org/10.1186/s13229-021-00435-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459
in Molecular Autism > 12 (2021) . - 26 p.[article] Tactile cortical responses and association with tactile reactivity in young children on the autism spectrum [Texte imprimé et/ou numérique] / S. ESPENHAHN, Auteur ; K. J. GODFREY, Auteur ; S. KAUR, Auteur ; M. ROSS, Auteur ; N. NATH, Auteur ; O. DMITRIEVA, Auteur ; C. MCMORRIS, Auteur ; F. CORTESE, Auteur ; C. WRIGHT, Auteur ; K. MURIAS, Auteur ; D. DEWEY, Auteur ; A. B. PROTZNER, Auteur ; A. MCCRIMMON, Auteur ; S. BRAY, Auteur ; A. D. HARRIS, Auteur . - 26 p.
Langues : Anglais (eng)
in Molecular Autism > 12 (2021) . - 26 p.
Mots-clés : Autistic Disorder/physiopathology Child Child, Preschool Electroencephalography Evoked Potentials, Somatosensory Female Humans Male Somatosensory Cortex/physiopathology Touch Adaptation Autism Children Eeg Erp Somatosensory-evoked potentials Tactile sensitivities Tactile stimulation Index. décimale : PER Périodiques Résumé : BACKGROUND: Unusual behavioral reactions to sensory stimuli are frequently reported in individuals on the autism spectrum (AS). Despite the early emergence of sensory features ( En ligne : http://dx.doi.org/10.1186/s13229-021-00435-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=459