2 recherche sur le mot-clé 'Fixation durations'

Facial emotion recognition and visual search strategies of children with high functioning autism and Asperger syndrome / Denise LEUNG in Research in Autism Spectrum Disorders, 7-7 (July 2013)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 7-7 (July 2013) . - p.833-844 Titre : Facial emotion recognition and visual search strategies of children with high functioning autism and Asperger syndrome Type de document : Texte imprimé et/ou numérique Auteurs : Denise LEUNG, Auteur ; Anna ORDQVIST, Auteur ; Torbjörn FALKMER, Auteur ; Richard PARSONS, Auteur ; Marita FALKMER, Auteur Article en page(s) : p.833-844 Langues : Anglais (eng) Mots-clés : Emotion recognition  Eye tracking  Fixations  Fixation durations  Socialisation Index. décimale : PER Périodiques Résumé : Adults with high functioning autism (HFA) and Asperger syndrome (AS) are often less able to identify facially expressed emotions than their matched controls. However, results regarding emotion recognition abilities in children with HFA/AS remain equivocal. Emotion recognition ability and visual search strategies of 26 children with HFA/AS and matched controls were compared. An eye tracker measured the number of fixations and fixation durations as participants were shown 12 pairs of slides, displaying photos of faces expressing anger, happiness or surprise. The first slide of each pair showed a face broken up into puzzle pieces. The eyes in half of the puzzle piece slides were bisected, while those in the remaining half were whole. Participants then identified which of three alternative faces was expressing the same emotion shown in the preceding puzzle piece slide. No differences between the participant groups were found for either emotion recognition ability or number of fixations. Both groups fixated more often on the eyes and performed better when the eyes were whole, suggesting that both children with HFA/AS and controls consider the eyes to be the most important source of information during emotion recognition. Fixation durations were longer in the group with HFA/AS, which indicates that while children with HFA/AS may be able to accurately recognise emotions, they find the task more demanding. En ligne : http://dx.doi.org/10.1016/j.rasd.2013.03.009 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=200 [article] Facial emotion recognition and visual search strategies of children with high functioning autism and Asperger syndrome [Texte imprimé et/ou numérique] / Denise LEUNG, Auteur ; Anna ORDQVIST, Auteur ; Torbjörn FALKMER, Auteur ; Richard PARSONS, Auteur ; Marita FALKMER, Auteur . - p.833-844. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 7-7 (July 2013) . - p.833-844 Mots-clés : Emotion recognition  Eye tracking  Fixations  Fixation durations  Socialisation Index. décimale : PER Périodiques Résumé : Adults with high functioning autism (HFA) and Asperger syndrome (AS) are often less able to identify facially expressed emotions than their matched controls. However, results regarding emotion recognition abilities in children with HFA/AS remain equivocal. Emotion recognition ability and visual search strategies of 26 children with HFA/AS and matched controls were compared. An eye tracker measured the number of fixations and fixation durations as participants were shown 12 pairs of slides, displaying photos of faces expressing anger, happiness or surprise. The first slide of each pair showed a face broken up into puzzle pieces. The eyes in half of the puzzle piece slides were bisected, while those in the remaining half were whole. Participants then identified which of three alternative faces was expressing the same emotion shown in the preceding puzzle piece slide. No differences between the participant groups were found for either emotion recognition ability or number of fixations. Both groups fixated more often on the eyes and performed better when the eyes were whole, suggesting that both children with HFA/AS and controls consider the eyes to be the most important source of information during emotion recognition. Fixation durations were longer in the group with HFA/AS, which indicates that while children with HFA/AS may be able to accurately recognise emotions, they find the task more demanding. En ligne : http://dx.doi.org/10.1016/j.rasd.2013.03.009 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=200

The influences of static and interactive dynamic facial stimuli on visual strategies in persons with Asperger syndrome / Marita FALKMER in Research in Autism Spectrum Disorders, 5-2 (April-June 2011)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 5-2 (April-June 2011) . - p.935-940 Titre : The influences of static and interactive dynamic facial stimuli on visual strategies in persons with Asperger syndrome Type de document : Texte imprimé et/ou numérique Auteurs : Marita FALKMER, Auteur ; Anna BJALLMARK, Auteur ; Matilda LARSSON, Auteur ; Torbjörn FALKMER, Auteur Année de publication : 2011 Article en page(s) : p.935-940 Langues : Anglais (eng) Mots-clés : Consistency across conditions  Eye tracking  Facial stimuli  Fixation durations  Number of fixations Index. décimale : PER Périodiques Résumé : Several studies, using eye tracking methodology, suggest that different visual strategies in persons with autism spectrum conditions, compared with controls, are applied when viewing facial stimuli. Most eye tracking studies are, however, made in laboratory settings with either static (photos) or non-interactive dynamic stimuli, such as video clips. Whether or not these results are transferable to a “real world” dialogue situation remains unclear. In order to examine the consistency of visual strategies across conditions, a comparison of two static conditions and an interactive dynamic “real world” condition, in 15 adults with Asperger syndrome and 15 matched controls, was made using an eye tracker. The static stimuli consisted of colour photos of faces, while a dialogue between the participants and the test leader created the interactive dynamic condition. A within-group comparison showed that people with AS, and their matched controls, displayed a high degree of stability in visual strategies when viewing faces, regardless of the facial stimuli being static or real, as in the interactive dynamic condition. The consistency in visual strategies within the participants suggests that results from studies with static facial stimuli provide important information on individual visual strategies that may be generalized to “real world” situations. En ligne : http://dx.doi.org/10.1016/j.rasd.2010.11.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=114 [article] The influences of static and interactive dynamic facial stimuli on visual strategies in persons with Asperger syndrome [Texte imprimé et/ou numérique] / Marita FALKMER, Auteur ; Anna BJALLMARK, Auteur ; Matilda LARSSON, Auteur ; Torbjörn FALKMER, Auteur . - 2011 . - p.935-940. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 5-2 (April-June 2011) . - p.935-940 Mots-clés : Consistency across conditions  Eye tracking  Facial stimuli  Fixation durations  Number of fixations Index. décimale : PER Périodiques Résumé : Several studies, using eye tracking methodology, suggest that different visual strategies in persons with autism spectrum conditions, compared with controls, are applied when viewing facial stimuli. Most eye tracking studies are, however, made in laboratory settings with either static (photos) or non-interactive dynamic stimuli, such as video clips. Whether or not these results are transferable to a “real world” dialogue situation remains unclear. In order to examine the consistency of visual strategies across conditions, a comparison of two static conditions and an interactive dynamic “real world” condition, in 15 adults with Asperger syndrome and 15 matched controls, was made using an eye tracker. The static stimuli consisted of colour photos of faces, while a dialogue between the participants and the test leader created the interactive dynamic condition. A within-group comparison showed that people with AS, and their matched controls, displayed a high degree of stability in visual strategies when viewing faces, regardless of the facial stimuli being static or real, as in the interactive dynamic condition. The consistency in visual strategies within the participants suggests that results from studies with static facial stimuli provide important information on individual visual strategies that may be generalized to “real world” situations. En ligne : http://dx.doi.org/10.1016/j.rasd.2010.11.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=114