Centre d'Information et de documentation du CRA Rhône-Alpes
CRA
Informations pratiques
-
Adresse
Centre d'information et de documentation
du CRA Rhône-Alpes
Centre Hospitalier le Vinatier
bât 211
95, Bd Pinel
69678 Bron CedexHoraires
Lundi au Vendredi
9h00-12h00 13h30-16h00Contact
Tél: +33(0)4 37 91 54 65
Mail
Fax: +33(0)4 37 91 54 37
-
Résultat de la recherche
2 recherche sur le mot-clé 'Response latency'
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Faire une suggestion
Reactivity to fearful expressions of familiar and unfamiliar people in children with autism: an eye-tracking pupillometry study / H. J. NUSKE in Journal of Neurodevelopmental Disorders, 6-1 (December 2014)
[article]
Titre : Reactivity to fearful expressions of familiar and unfamiliar people in children with 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) : p.14 Langues : Anglais (eng) Mots-clés : Autism Emotion Eye-tracking Familiarity Physiological reactivity Pupillometry Response latency Index. décimale : PER Périodiques Résumé : BACKGROUND: Individuals with autism are often reported to have difficulty with emotion processing. However, clinical and experimental data show that they are sensitive to familiarity; for example, they show normative attachment to familiar people, and have normative brain activity in response to familiar faces. To date, no study has measured their reactivity to the emotions of familiar vs. unfamiliar people. Thus, our aim was to determine whether individuals with autism would show normative reactivity to emotion in familiar people. METHODS: Participants were 21 children with autism and 21 children with typical development, aged two to five years, matched on age and gender. The children observed videos of familiar people (their child-care teachers) and unfamiliar people expressing fear, whilst their visual attention and pupillary reactions were recorded (the latter as an index of emotional reactivity), using eye tracking technology. RESULTS: The children with autism showed normative pupillary reactions (peak magnitude) to fear expressed by familiar people, but a reduced response to fear expressed by unfamiliar people. However, across familiarity conditions, the children with autism had longer latency peak responses than the typically developing children. This pattern of findings was independent of cognitive factors or visual attention as visual attention by group was not related to familiarity condition. The children with autism had reduced visual attention to neutral faces; however, on fearful faces there were no group differences. Abnormalities in pupillary reactivity in the autism group were related to less prosocial behaviour and more severe play and communication deficits. CONCLUSIONS: Children with autism were less atypical in their responses to fearful expressions of people they know, arguing against a pervasive emotional impairment in autism, but rather one that may be mediated by familiarity. En ligne : http://dx.doi.org/10.1186/1866-1955-6-14 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=346
in Journal of Neurodevelopmental Disorders > 6-1 (December 2014) . - p.14[article] Reactivity to fearful expressions of familiar and unfamiliar people in children with autism: an eye-tracking pupillometry study [Texte imprimé et/ou numérique] / H. J. NUSKE, Auteur ; G. VIVANTI, Auteur ; Cheryl DISSANAYAKE, Auteur . - p.14.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 6-1 (December 2014) . - p.14
Mots-clés : Autism Emotion Eye-tracking Familiarity Physiological reactivity Pupillometry Response latency Index. décimale : PER Périodiques Résumé : BACKGROUND: Individuals with autism are often reported to have difficulty with emotion processing. However, clinical and experimental data show that they are sensitive to familiarity; for example, they show normative attachment to familiar people, and have normative brain activity in response to familiar faces. To date, no study has measured their reactivity to the emotions of familiar vs. unfamiliar people. Thus, our aim was to determine whether individuals with autism would show normative reactivity to emotion in familiar people. METHODS: Participants were 21 children with autism and 21 children with typical development, aged two to five years, matched on age and gender. The children observed videos of familiar people (their child-care teachers) and unfamiliar people expressing fear, whilst their visual attention and pupillary reactions were recorded (the latter as an index of emotional reactivity), using eye tracking technology. RESULTS: The children with autism showed normative pupillary reactions (peak magnitude) to fear expressed by familiar people, but a reduced response to fear expressed by unfamiliar people. However, across familiarity conditions, the children with autism had longer latency peak responses than the typically developing children. This pattern of findings was independent of cognitive factors or visual attention as visual attention by group was not related to familiarity condition. The children with autism had reduced visual attention to neutral faces; however, on fearful faces there were no group differences. Abnormalities in pupillary reactivity in the autism group were related to less prosocial behaviour and more severe play and communication deficits. CONCLUSIONS: Children with autism were less atypical in their responses to fearful expressions of people they know, arguing against a pervasive emotional impairment in autism, but rather one that may be mediated by familiarity. En ligne : http://dx.doi.org/10.1186/1866-1955-6-14 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=346 Relationship between physiological and parent-observed auditory over-responsiveness in children with typical development and those with autism spectrum disorders / H. TAKAHASHI in Autism, 22-3 (April 2018)
[article]
Titre : Relationship between physiological and parent-observed auditory over-responsiveness in children with typical development and those with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : H. TAKAHASHI, Auteur ; T. NAKAHACHI, Auteur ; A. STICKLEY, Auteur ; M. ISHITOBI, Auteur ; Y. KAMIO, Auteur Article en page(s) : p.291-298 Langues : Anglais (eng) Mots-clés : acoustic startle response autism spectrum disorders hypersensitivity phenotype response latency Index. décimale : PER Périodiques Résumé : The objective of this study was to investigate relationships between caregiver-reported sensory processing abnormalities, and the physiological index of auditory over-responsiveness evaluated using acoustic startle response measures, in children with autism spectrum disorders and typical development. Mean acoustic startle response magnitudes in response to 65-105 dB stimuli, in increments of 10 dB, were analyzed in children with autism spectrum disorders and with typical development. Average peak startle latency was also examined. We examined the relationship of these acoustic startle response measures to parent-reported behavioral sensory processing patterns in everyday situations, assessed using the Sensory Profile for all participants. Low-threshold scores on the Sensory Profile auditory section were related to acoustic startle response magnitudes at 75 and 85 dB, but not to the lower intensities of 65 dB. The peak startle latency and acoustic startle response magnitudes at low-stimuli intensities of 65 and 75 dB were significantly related to the low-threshold quadrants (sensory sensitivity and sensation avoiding) scores and to the high-threshold quadrant of sensation seeking. Our results suggest that physiological assessment provides further information regarding auditory over-responsiveness to less-intense stimuli and its relationship to caregiver-observed sensory processing abnormalities in everyday situations. En ligne : http://dx.doi.org/10.1177/1362361316680497 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=358
in Autism > 22-3 (April 2018) . - p.291-298[article] Relationship between physiological and parent-observed auditory over-responsiveness in children with typical development and those with autism spectrum disorders [Texte imprimé et/ou numérique] / H. TAKAHASHI, Auteur ; T. NAKAHACHI, Auteur ; A. STICKLEY, Auteur ; M. ISHITOBI, Auteur ; Y. KAMIO, Auteur . - p.291-298.
Langues : Anglais (eng)
in Autism > 22-3 (April 2018) . - p.291-298
Mots-clés : acoustic startle response autism spectrum disorders hypersensitivity phenotype response latency Index. décimale : PER Périodiques Résumé : The objective of this study was to investigate relationships between caregiver-reported sensory processing abnormalities, and the physiological index of auditory over-responsiveness evaluated using acoustic startle response measures, in children with autism spectrum disorders and typical development. Mean acoustic startle response magnitudes in response to 65-105 dB stimuli, in increments of 10 dB, were analyzed in children with autism spectrum disorders and with typical development. Average peak startle latency was also examined. We examined the relationship of these acoustic startle response measures to parent-reported behavioral sensory processing patterns in everyday situations, assessed using the Sensory Profile for all participants. Low-threshold scores on the Sensory Profile auditory section were related to acoustic startle response magnitudes at 75 and 85 dB, but not to the lower intensities of 65 dB. The peak startle latency and acoustic startle response magnitudes at low-stimuli intensities of 65 and 75 dB were significantly related to the low-threshold quadrants (sensory sensitivity and sensation avoiding) scores and to the high-threshold quadrant of sensation seeking. Our results suggest that physiological assessment provides further information regarding auditory over-responsiveness to less-intense stimuli and its relationship to caregiver-observed sensory processing abnormalities in everyday situations. En ligne : http://dx.doi.org/10.1177/1362361316680497 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=358