7 recherche sur le mot-clé 'pupil dilation'

Pupil dilation during visuospatial orienting differentiates between autism spectrum disorder and attention-deficit/hyperactivity disorder / Sara BOXHOORN in Journal of Child Psychology and Psychiatry, 61-5 (May 2020)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 61-5 (May 2020) . - p.614-624 Titre : Pupil dilation during visuospatial orienting differentiates between autism spectrum disorder and attention-deficit/hyperactivity disorder Type de document : texte imprimé Auteurs : Sara BOXHOORN, Auteur ; Nico BAST, Auteur ; Hans SUPER, Auteur ; Leonie POLZER, Auteur ; Hannah CHOLEMKERY, Auteur ; Christine M. FREITAG, Auteur Article en page(s) : p.614-624 Langues : Anglais (eng) Mots-clés : Attention  LC-NE system  attention-deficit/hyperactivity disorder  autism spectrum disorder  pupil dilation Index. décimale : PER Périodiques Résumé : BACKGROUND: Previous research demonstrated atypical attention in children with attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). Regarding visual orienting, findings suggest a differential impairment: Atypical orienting to relatively unexpected targets in ASD, and atypical processing of alerting cues in ADHD. The locus coeruleus-norepinephrine (LC-NE) system plays an important role in exploiting alerting cues to increase attention and task performance. The present study's aim was to examine differential subcortical processes underlying visual orienting in ASD and ADHD with pupil dilation (PD) as index of LC activity. METHODS: Pupil dilation (PD) progression metrics during visual orienting were calculated for task-evoked PD locked to cue, stimulus onset, and behavioral response. Group differences in PD and reaction time (RT) were compared between children with ASD without ADHD (ASD-) (N = 18), ADHD without ASD (ADHD-) (N = 28), both disorders (ASD + ADHD) (N = 14), and typically developing children (TD) (N = 31) using linear mixed models (LMM). To further explore the modulatory role of the LC-NE system group differences in the effect of task-evoked PD metrics on RT were examined exploratively. RESULTS: ASD (+ADHD) showed slower orienting responses to relatively unexpected spatial target stimuli as compared to TD, which was accompanied by higher PD amplitudes relative to ADHD- and TD. In ADHD-, shorter cue-evoked PD latencies relative to ASD-, ASD + ADHD, and TD were found. Group differences in the effect of cue- and stimulus-evoked PD amplitudes on RT were found in ASD- relative to TD. CONCLUSIONS: Study findings provide new evidence for a specific role of the LC-NE system in impaired reflexive orienting responses in ASD, and atypical visual processing of alerting cues in ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.13179 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=422 [article] Pupil dilation during visuospatial orienting differentiates between autism spectrum disorder and attention-deficit/hyperactivity disorder [texte imprimé] / Sara BOXHOORN, Auteur ; Nico BAST, Auteur ; Hans SUPER, Auteur ; Leonie POLZER, Auteur ; Hannah CHOLEMKERY, Auteur ; Christine M. FREITAG, Auteur . - p.614-624. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 61-5 (May 2020) . - p.614-624 Mots-clés : Attention  LC-NE system  attention-deficit/hyperactivity disorder  autism spectrum disorder  pupil dilation Index. décimale : PER Périodiques Résumé : BACKGROUND: Previous research demonstrated atypical attention in children with attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). Regarding visual orienting, findings suggest a differential impairment: Atypical orienting to relatively unexpected targets in ASD, and atypical processing of alerting cues in ADHD. The locus coeruleus-norepinephrine (LC-NE) system plays an important role in exploiting alerting cues to increase attention and task performance. The present study's aim was to examine differential subcortical processes underlying visual orienting in ASD and ADHD with pupil dilation (PD) as index of LC activity. METHODS: Pupil dilation (PD) progression metrics during visual orienting were calculated for task-evoked PD locked to cue, stimulus onset, and behavioral response. Group differences in PD and reaction time (RT) were compared between children with ASD without ADHD (ASD-) (N = 18), ADHD without ASD (ADHD-) (N = 28), both disorders (ASD + ADHD) (N = 14), and typically developing children (TD) (N = 31) using linear mixed models (LMM). To further explore the modulatory role of the LC-NE system group differences in the effect of task-evoked PD metrics on RT were examined exploratively. RESULTS: ASD (+ADHD) showed slower orienting responses to relatively unexpected spatial target stimuli as compared to TD, which was accompanied by higher PD amplitudes relative to ADHD- and TD. In ADHD-, shorter cue-evoked PD latencies relative to ASD-, ASD + ADHD, and TD were found. Group differences in the effect of cue- and stimulus-evoked PD amplitudes on RT were found in ASD- relative to TD. CONCLUSIONS: Study findings provide new evidence for a specific role of the LC-NE system in impaired reflexive orienting responses in ASD, and atypical visual processing of alerting cues in ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.13179 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=422

Increased pupil dilation to happy faces in children with hyperactive/impulsive symptoms of ADHD / Johan LUNDIN KLEBERG in Development and Psychopathology, 33-3 (August 2021)  

Public ISBD [article]  inDevelopment and Psychopathology > 33-3 (August 2021) . - p.767-777 Titre : Increased pupil dilation to happy faces in children with hyperactive/impulsive symptoms of ADHD Type de document : texte imprimé Auteurs : Johan LUNDIN KLEBERG, Auteur ; Matilda A. FRICK, Auteur ; Karin C. BROCKI, Auteur Article en page(s) : p.767-777 Langues : Anglais (eng) Mots-clés : arousal  attention-deficit/hyperactivity disorder (ADHD)  face perception  positive emotionality  pupil dilation Index. décimale : PER Périodiques Résumé : Attention-deficit/hyperactivity disorder (ADHD) is associated with disrupted emotional processes including impaired regulation of approach behavior and positive affect, irritability, and anger. Enhanced reactivity to emotional cues may be an underlying process. Pupil dilation is an indirect index of arousal, modulated by the autonomic nervous system and activity in the locus coeruleus-noradrenergic system. In the current study, pupil dilation was recorded while 8- to 12- year old children (n = 71, 26 with a diagnosis of ADHD and 45 typically developing), viewed images of emotional faces. Parent-rated hyperactive/impulsive symptoms were uniquely linked to higher pupil dilation to happy, but not fearful, angry, or neutral faces. This was not explained by comorbid externalizing symptoms. Together, these results suggest that hyperactive/impulsive symptoms are associated with hyperresponsiveness to approach-related emotional cues across a wide range of symptom severity. En ligne : http://dx.doi.org/10.1017/S0954579420000036 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=457 [article] Increased pupil dilation to happy faces in children with hyperactive/impulsive symptoms of ADHD [texte imprimé] / Johan LUNDIN KLEBERG, Auteur ; Matilda A. FRICK, Auteur ; Karin C. BROCKI, Auteur . - p.767-777. Langues : Anglais (eng) in Development and Psychopathology > 33-3 (August 2021) . - p.767-777 Mots-clés : arousal  attention-deficit/hyperactivity disorder (ADHD)  face perception  positive emotionality  pupil dilation Index. décimale : PER Périodiques Résumé : Attention-deficit/hyperactivity disorder (ADHD) is associated with disrupted emotional processes including impaired regulation of approach behavior and positive affect, irritability, and anger. Enhanced reactivity to emotional cues may be an underlying process. Pupil dilation is an indirect index of arousal, modulated by the autonomic nervous system and activity in the locus coeruleus-noradrenergic system. In the current study, pupil dilation was recorded while 8- to 12- year old children (n = 71, 26 with a diagnosis of ADHD and 45 typically developing), viewed images of emotional faces. Parent-rated hyperactive/impulsive symptoms were uniquely linked to higher pupil dilation to happy, but not fearful, angry, or neutral faces. This was not explained by comorbid externalizing symptoms. Together, these results suggest that hyperactive/impulsive symptoms are associated with hyperresponsiveness to approach-related emotional cues across a wide range of symptom severity. En ligne : http://dx.doi.org/10.1017/S0954579420000036 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=457

Larger pupil dilation to nonsocial sounds in infants with subsequent autism diagnosis / Maja RUDLING in Journal of Child Psychology and Psychiatry, 63-7 (July 2022)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 63-7 (July 2022) . - p.793-801 Titre : Larger pupil dilation to nonsocial sounds in infants with subsequent autism diagnosis Type de document : texte imprimé Auteurs : Maja RUDLING, Auteur ; Pär NYSTRÖM, Auteur ; Sven BÖLTE, Auteur ; Terje FALCK-YTTER, Auteur Article en page(s) : p.793-801 Langues : Anglais (eng) Mots-clés : Attention/physiology  Auditory Perception/physiology  Autism Spectrum Disorder/diagnosis  Autistic Disorder  Female  Humans  Infant  Pupil/physiology  Autism spectrum disorder  auditory attention  infancy  pupil dilation Index. décimale : PER Périodiques Résumé : BACKGROUND: Studies of infants with an elevated likelihood of autism spectrum disorder can identify basic developmental processes that are associated with subsequently emerging clinical symptoms. Atypical responsiveness to sounds in infancy is such a potential early marker of autism. Here, we used pupillometry to quantify reactivity to social and nonsocial sounds in infants with a subsequent diagnosis. Previous research suggest that pupil dilation reflects attentional alerting, and link it to the locus coeruleus norepinephrine system. METHODS: We measured pupil dilation responses to child-directed speech and the sound of running water; sounds infants often hear in their everyday life. The final sample consisted of 99 ten-month-old infants (52 girls), of whom 68 had an elevated likelihood of autism and 31 were typically developing low-likelihood infants. At follow-up (36 months of age), 18 children in the elevated-likelihood group were diagnosed with autism. RESULTS: Compared to infants without diagnosis, the infants who were subsequently diagnosed with autism had larger pupil dilation when listening to nonsocial sounds, while reactivity to speech was strikingly similar between groups. In the total sample, more pupil dilation to the nonsocial sound was associated with higher levels of autistic symptoms. We also found that on a trial-by-trial basis, across all conditions and groups, more pupil dilation was associated with making fewer gaze shifts. CONCLUSIONS: This study did not find evidence of atypical pupillary reactivity to child-directed speech early in life in autism. Instead, the results suggest that certain nonsocial sounds elicit atypically strong alerting responses in infants with a subsequent autism diagnosis. These findings may have important theoretical and clinical implications. En ligne : http://dx.doi.org/10.1111/jcpp.13520 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=477 [article] Larger pupil dilation to nonsocial sounds in infants with subsequent autism diagnosis [texte imprimé] / Maja RUDLING, Auteur ; Pär NYSTRÖM, Auteur ; Sven BÖLTE, Auteur ; Terje FALCK-YTTER, Auteur . - p.793-801. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 63-7 (July 2022) . - p.793-801 Mots-clés : Attention/physiology  Auditory Perception/physiology  Autism Spectrum Disorder/diagnosis  Autistic Disorder  Female  Humans  Infant  Pupil/physiology  Autism spectrum disorder  auditory attention  infancy  pupil dilation Index. décimale : PER Périodiques Résumé : BACKGROUND: Studies of infants with an elevated likelihood of autism spectrum disorder can identify basic developmental processes that are associated with subsequently emerging clinical symptoms. Atypical responsiveness to sounds in infancy is such a potential early marker of autism. Here, we used pupillometry to quantify reactivity to social and nonsocial sounds in infants with a subsequent diagnosis. Previous research suggest that pupil dilation reflects attentional alerting, and link it to the locus coeruleus norepinephrine system. METHODS: We measured pupil dilation responses to child-directed speech and the sound of running water; sounds infants often hear in their everyday life. The final sample consisted of 99 ten-month-old infants (52 girls), of whom 68 had an elevated likelihood of autism and 31 were typically developing low-likelihood infants. At follow-up (36 months of age), 18 children in the elevated-likelihood group were diagnosed with autism. RESULTS: Compared to infants without diagnosis, the infants who were subsequently diagnosed with autism had larger pupil dilation when listening to nonsocial sounds, while reactivity to speech was strikingly similar between groups. In the total sample, more pupil dilation to the nonsocial sound was associated with higher levels of autistic symptoms. We also found that on a trial-by-trial basis, across all conditions and groups, more pupil dilation was associated with making fewer gaze shifts. CONCLUSIONS: This study did not find evidence of atypical pupillary reactivity to child-directed speech early in life in autism. Instead, the results suggest that certain nonsocial sounds elicit atypically strong alerting responses in infants with a subsequent autism diagnosis. These findings may have important theoretical and clinical implications. En ligne : http://dx.doi.org/10.1111/jcpp.13520 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=477

Validation of the Movie for the Assessment of Social Cognition in Adolescents with ASD: Fixation Duration and Pupil Dilation as Predictors of Performance / Nico MÃœLLER in Journal of Autism and Developmental Disorders, 46-9 (September 2016)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 46-9 (September 2016) . - p.2831-2844 Titre : Validation of the Movie for the Assessment of Social Cognition in Adolescents with ASD: Fixation Duration and Pupil Dilation as Predictors of Performance Type de document : texte imprimé Auteurs : Nico MÃœLLER, Auteur ; Sarah BAUMEISTER, Auteur ; Isabel DZIOBEK, Auteur ; Tobias BANASCHEWSKI, Auteur ; Luise POUSTKA, Auteur Article en page(s) : p.2831-2844 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Eye-tracking  Adolescence  Pupil dilation  Social cognition  Ecological validity Index. décimale : PER Périodiques Résumé : Impaired social cognition is one of the core characteristics of autism spectrum disorders (ASD). Appropriate measures of social cognition for high-functioning adolescents with ASD are, however, lacking. The Movie for the Assessment of Social Cognition (MASC) uses dynamic social stimuli, ensuring ecological validity, and has proven to be a sensitive measure in adulthood. In the current study, 33 adolescents with ASD and 23 controls were administered the MASC, while concurrent eye tracking was used to relate gaze behavior to performance levels. The ASD group exhibited reduced MASC scores, with social cognition performance being explained by shorter fixation duration on eyes and decreased pupil dilation. These potential diagnostic markers are discussed as indicators of different processing of social information in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2828-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=292 [article] Validation of the Movie for the Assessment of Social Cognition in Adolescents with ASD: Fixation Duration and Pupil Dilation as Predictors of Performance [texte imprimé] / Nico MÃœLLER, Auteur ; Sarah BAUMEISTER, Auteur ; Isabel DZIOBEK, Auteur ; Tobias BANASCHEWSKI, Auteur ; Luise POUSTKA, Auteur . - p.2831-2844. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 46-9 (September 2016) . - p.2831-2844 Mots-clés : Autism spectrum disorder  Eye-tracking  Adolescence  Pupil dilation  Social cognition  Ecological validity Index. décimale : PER Périodiques Résumé : Impaired social cognition is one of the core characteristics of autism spectrum disorders (ASD). Appropriate measures of social cognition for high-functioning adolescents with ASD are, however, lacking. The Movie for the Assessment of Social Cognition (MASC) uses dynamic social stimuli, ensuring ecological validity, and has proven to be a sensitive measure in adulthood. In the current study, 33 adolescents with ASD and 23 controls were administered the MASC, while concurrent eye tracking was used to relate gaze behavior to performance levels. The ASD group exhibited reduced MASC scores, with social cognition performance being explained by shorter fixation duration on eyes and decreased pupil dilation. These potential diagnostic markers are discussed as indicators of different processing of social information in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2828-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=292

Challenges with shifting, regardless of disengagement: attention mechanisms and eye movements in Williams syndrome / Astrid HALLMAN in Journal of Neurodevelopmental Disorders, 17 (2025)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 17 (2025) Titre : Challenges with shifting, regardless of disengagement: attention mechanisms and eye movements in Williams syndrome Type de document : texte imprimé Auteurs : Astrid HALLMAN, Auteur ; Charlotte WILLFORS, Auteur ; Christine FAWCETT, Auteur ; Matilda A. FRICK, Auteur ; Ann NORDGREN, Auteur ; Johan Lundin KLEBERG, Auteur Langues : Anglais (eng) Mots-clés : Eye tracking  Intellectual disability  Orienting attention  Phasic alerting effect  Pupil dilation  Shifting attention  Visual disengagement  Williams syndrome  in accordance with the Declaration of Helsinki and received approval from the  Regional Ethics Committee of Stockholm, Sweden (dnr 2018/1218-31 with subsequent  amendments). Informed consents were collected from the participants and/or their  legal guardians. Informed assent was obtained from all participants who were able  to assent. Consent for publication: Not applicable. Competing interests: The  authors declare no competing interests. Index. décimale : PER Périodiques Résumé : BACKGROUND: People with Williams syndrome (WS) face challenges in various areas of cognitive processing, including attention. Previous studies suggest that these challenges are particularly pronounced when disengagement of attention from a previously attended stimulus is required, as compared to shifting attention without the need to disengage. Difficulties with attention could in turn be implicated in several of the behavioral characteristics of WS. Here, disengagement and shifting of visual attention, together with pupil dilation, were independently assessed in one of the largest eye-tracking studies of WS to date. METHODS: We investigated shifting, disengagement, and the effects of auditory alerting cues on pupil dilation in WS individuals (n = 45, age range = 9–58 years), non-WS individuals with intellectual disability (ID) (n = 36, age range = 6–59 years), and typically developed (TD) infants (n = 32, age range = 6–7 months), children and adults (n = 31, age range = 9–60 years), using a modified gap-overlap task. Data were analyzed using linear mixed-effect models (LMMs). RESULTS: Individuals with WS were less likely to shift their attention to upcoming targets than TD individuals (all ages), but more likely than the ID group to do so. When they did shift attention, participants with WS and ID were slower to initiate a gaze shift than TD participants regardless of whether disengagement was needed. In the WS group, failure to shift attention was strongly predicted by higher arousal (pupil dilation), which was induced by auditory alerting cues. CONCLUSIONS: Contrasting with previous theories of attention in WS, we found no evidence for a specific challenge in disengaging attention. Instead, our results point to a more general challenge in shifting attention. Reduced attention shifting in WS may be partly explained by atypical arousal regulation. These results contribute to our understanding of the WS phenotype. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s11689-025-09639-z. En ligne : https://dx.doi.org/10.1186/s11689-025-09639-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=576 [article] Challenges with shifting, regardless of disengagement: attention mechanisms and eye movements in Williams syndrome [texte imprimé] / Astrid HALLMAN, Auteur ; Charlotte WILLFORS, Auteur ; Christine FAWCETT, Auteur ; Matilda A. FRICK, Auteur ; Ann NORDGREN, Auteur ; Johan Lundin KLEBERG, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 17 (2025) Mots-clés : Eye tracking  Intellectual disability  Orienting attention  Phasic alerting effect  Pupil dilation  Shifting attention  Visual disengagement  Williams syndrome  in accordance with the Declaration of Helsinki and received approval from the  Regional Ethics Committee of Stockholm, Sweden (dnr 2018/1218-31 with subsequent  amendments). Informed consents were collected from the participants and/or their  legal guardians. Informed assent was obtained from all participants who were able  to assent. Consent for publication: Not applicable. Competing interests: The  authors declare no competing interests. Index. décimale : PER Périodiques Résumé : BACKGROUND: People with Williams syndrome (WS) face challenges in various areas of cognitive processing, including attention. Previous studies suggest that these challenges are particularly pronounced when disengagement of attention from a previously attended stimulus is required, as compared to shifting attention without the need to disengage. Difficulties with attention could in turn be implicated in several of the behavioral characteristics of WS. Here, disengagement and shifting of visual attention, together with pupil dilation, were independently assessed in one of the largest eye-tracking studies of WS to date. METHODS: We investigated shifting, disengagement, and the effects of auditory alerting cues on pupil dilation in WS individuals (n = 45, age range = 9–58 years), non-WS individuals with intellectual disability (ID) (n = 36, age range = 6–59 years), and typically developed (TD) infants (n = 32, age range = 6–7 months), children and adults (n = 31, age range = 9–60 years), using a modified gap-overlap task. Data were analyzed using linear mixed-effect models (LMMs). RESULTS: Individuals with WS were less likely to shift their attention to upcoming targets than TD individuals (all ages), but more likely than the ID group to do so. When they did shift attention, participants with WS and ID were slower to initiate a gaze shift than TD participants regardless of whether disengagement was needed. In the WS group, failure to shift attention was strongly predicted by higher arousal (pupil dilation), which was induced by auditory alerting cues. CONCLUSIONS: Contrasting with previous theories of attention in WS, we found no evidence for a specific challenge in disengaging attention. Instead, our results point to a more general challenge in shifting attention. Reduced attention shifting in WS may be partly explained by atypical arousal regulation. These results contribute to our understanding of the WS phenotype. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s11689-025-09639-z. En ligne : https://dx.doi.org/10.1186/s11689-025-09639-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=576

Pupillary reactivity to emotional stimuli in children of depressed and anxious mothers / Katie L. BURKHOUSE in Journal of Child Psychology and Psychiatry, 55-9 (September 2014)  

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Social gaze behavior and hyperarousal in young females with fragile X syndrome: A within-person approach / Jonas G. MILLER in Development and Psychopathology, 36-3 (August 2024)  

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