Abnormal spatial asymmetry of selective attention in ADHD / Edgar CHAN in Journal of Child Psychology and Psychiatry, 50-9 (September 2009)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 50-9 (September 2009) . - p.1064-1072 Titre : Abnormal spatial asymmetry of selective attention in ADHD Type de document : Texte imprimé et/ou numérique Auteurs : Edgar CHAN, Auteur ; Cynthia L. HUANG-POLLOCK, Auteur ; Mark A. BELLGROVE, Auteur ; Jason B. MATTINGLEY, Auteur ; Therese ENGLISH, Auteur ; Robert HESTER, Auteur ; Alasdair VANCE, Auteur Année de publication : 2009 Article en page(s) : p.1064-1072 Langues : Anglais (eng) Mots-clés : Selective-attention flanker-interference spatial-bias ADHD spatial-attention Index. décimale : PER Périodiques Résumé : Background: Evidence for a selective attention abnormality in children with attention deficit hyperactivity disorder (ADHD) has been hard to identify using conventional methods from cognitive science. This study tested whether the presence of selective attention abnormalities in ADHD may vary as a function of perceptual load and target lateralisation. Given evidence of right-hemisphere dysfunction in ADHD we predicted increased interference effects for right, but not left-sided target displays, particularly under low perceptual load. Method: Fourteen children with ADHD-C and 14 typically developing children were tested on a modified flanker task under low and high perceptual load. We also sought evidence for our hypothesis in a re-analysis of an independent data set (42 ADHD; 34 typically developing) in which load effects on selective attention in ADHD were previously examined (Huang-Pollock, Nigg, & Carr, 2005). Results: As predicted, all children showed evidence of greater interference by flankers under low compared with high perceptual load conditions. Crucially, however, children with ADHD showed the greatest interference effect for right-sided target displays under low but not high perceptual load. In contrast, typically developing children showed the greatest interference for left-sided target displays. The magnitude of interference for right-sided targets was also positively correlated with ADHD symptom levels. Re-analysis of an independent data set (Huang-Pollock et al., 2005) further confirmed our findings. Conclusions: This study demonstrates that interference effects in children with ADHD and typically developing children are spatially asymmetrical but opposite in direction. The pattern of right-sided interference effects in children with ADHD suggests disruption within right hemisphere attentional networks in ADHD. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2009.02096.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=828 [article] Abnormal spatial asymmetry of selective attention in ADHD [Texte imprimé et/ou numérique] / Edgar CHAN, Auteur ; Cynthia L. HUANG-POLLOCK, Auteur ; Mark A. BELLGROVE, Auteur ; Jason B. MATTINGLEY, Auteur ; Therese ENGLISH, Auteur ; Robert HESTER, Auteur ; Alasdair VANCE, Auteur . - 2009 . - p.1064-1072. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 50-9 (September 2009) . - p.1064-1072 Mots-clés : Selective-attention flanker-interference spatial-bias ADHD spatial-attention Index. décimale : PER Périodiques Résumé : Background: Evidence for a selective attention abnormality in children with attention deficit hyperactivity disorder (ADHD) has been hard to identify using conventional methods from cognitive science. This study tested whether the presence of selective attention abnormalities in ADHD may vary as a function of perceptual load and target lateralisation. Given evidence of right-hemisphere dysfunction in ADHD we predicted increased interference effects for right, but not left-sided target displays, particularly under low perceptual load. Method: Fourteen children with ADHD-C and 14 typically developing children were tested on a modified flanker task under low and high perceptual load. We also sought evidence for our hypothesis in a re-analysis of an independent data set (42 ADHD; 34 typically developing) in which load effects on selective attention in ADHD were previously examined (Huang-Pollock, Nigg, & Carr, 2005). Results: As predicted, all children showed evidence of greater interference by flankers under low compared with high perceptual load conditions. Crucially, however, children with ADHD showed the greatest interference effect for right-sided target displays under low but not high perceptual load. In contrast, typically developing children showed the greatest interference for left-sided target displays. The magnitude of interference for right-sided targets was also positively correlated with ADHD symptom levels. Re-analysis of an independent data set (Huang-Pollock et al., 2005) further confirmed our findings. Conclusions: This study demonstrates that interference effects in children with ADHD and typically developing children are spatially asymmetrical but opposite in direction. The pattern of right-sided interference effects in children with ADHD suggests disruption within right hemisphere attentional networks in ADHD. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2009.02096.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=828

Automatic and Controlled Processing / Trevor T.J. CHONG

Public ISBD contenu dans Mirror Neuron Systems / Jaime A. PINEDA Titre : Automatic and Controlled Processing Type de document : Texte imprimé et/ou numérique Auteurs : Trevor T.J. CHONG, Auteur ; Jason B. MATTINGLEY, Auteur Année de publication : 2009 Importance : p.213-233 Langues : Anglais (eng) Index. décimale : PAR-G PAR-G - Imitation Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=996 contenu dans Mirror Neuron Systems / Jaime A. PINEDA Automatic and Controlled Processing [Texte imprimé et/ou numérique] / Trevor T.J. CHONG, Auteur ; Jason B. MATTINGLEY, Auteur . - 2009 . - p.213-233. Langues : Anglais (eng) Index. décimale : PAR-G PAR-G - Imitation Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=996

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Increased context adjustment is associated with auditory sensitivities but not with autistic traits / Roshini RANDENIYA in Autism Research, 15-8 (August 2022)  

Public ISBD [article]  inAutism Research > 15-8 (August 2022) . - p.1457-1468 Titre : Increased context adjustment is associated with auditory sensitivities but not with autistic traits Type de document : Texte imprimé et/ou numérique Auteurs : Roshini RANDENIYA, Auteur ; Jason B. MATTINGLEY, Auteur ; Marta I. GARRIDO, Auteur Article en page(s) : p.1457-1468 Langues : Anglais (eng) Mots-clés : Acoustic Stimulation/methods  Auditory Perception/physiology  Autism Spectrum Disorder  Bayes Theorem  Electroencephalography  Evoked Potentials, Auditory/physiology  Humans  Bayesian  Eeg  Mmn  atypical perception  autism  precision  prediction errors  predictive coding Index. décimale : PER Périodiques Résumé : Bayesian models of autism suggest that alterations in context-sensitive prediction error weighting may underpin sensory perceptual alterations, such as hypersensitivities. We used an auditory oddball paradigm with pure tones arising from high or low uncertainty contexts to determine whether autistic individuals display differences in context adjustment relative to neurotypicals. We did not find group differences in early prediction error responses indexed by mismatch negativity. A dimensional approach revealed a positive correlation between context-dependent prediction errors and subjective reports of auditory sensitivities, but not with autistic traits. These findings suggest that autism studies may benefit from accounting for sensory sensitivities in group comparisons. LAY SUMMARY: We aimed to understand if autistic and non-autistic groups showed differences in their electrical brain activity measured by electroencephalography (EEG) when listening to surprising tones infrequently embedded in a statistical pattern. We found no differences between the autistic and the non-autistic group in their EEG response to the surprising sound even if the pattern switched, indicating their ability to learn a pattern. We did find that, as subjective sensory sensitivities (but not autistic traits) increased, there were increasingly large differences between the EEG responses to surprising tones that were embedded in the different statistical patterns of tones. These findings show that perceptual alterations may be a function of sensory sensitivities, but not necessarily autistic traits. We suggest that future EEG studies in autism may benefit from accounting for sensory sensitivities. En ligne : http://dx.doi.org/10.1002/aur.2759 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=483 [article] Increased context adjustment is associated with auditory sensitivities but not with autistic traits [Texte imprimé et/ou numérique] / Roshini RANDENIYA, Auteur ; Jason B. MATTINGLEY, Auteur ; Marta I. GARRIDO, Auteur . - p.1457-1468. Langues : Anglais (eng) in Autism Research > 15-8 (August 2022) . - p.1457-1468 Mots-clés : Acoustic Stimulation/methods  Auditory Perception/physiology  Autism Spectrum Disorder  Bayes Theorem  Electroencephalography  Evoked Potentials, Auditory/physiology  Humans  Bayesian  Eeg  Mmn  atypical perception  autism  precision  prediction errors  predictive coding Index. décimale : PER Périodiques Résumé : Bayesian models of autism suggest that alterations in context-sensitive prediction error weighting may underpin sensory perceptual alterations, such as hypersensitivities. We used an auditory oddball paradigm with pure tones arising from high or low uncertainty contexts to determine whether autistic individuals display differences in context adjustment relative to neurotypicals. We did not find group differences in early prediction error responses indexed by mismatch negativity. A dimensional approach revealed a positive correlation between context-dependent prediction errors and subjective reports of auditory sensitivities, but not with autistic traits. These findings suggest that autism studies may benefit from accounting for sensory sensitivities in group comparisons. LAY SUMMARY: We aimed to understand if autistic and non-autistic groups showed differences in their electrical brain activity measured by electroencephalography (EEG) when listening to surprising tones infrequently embedded in a statistical pattern. We found no differences between the autistic and the non-autistic group in their EEG response to the surprising sound even if the pattern switched, indicating their ability to learn a pattern. We did find that, as subjective sensory sensitivities (but not autistic traits) increased, there were increasingly large differences between the EEG responses to surprising tones that were embedded in the different statistical patterns of tones. These findings show that perceptual alterations may be a function of sensory sensitivities, but not necessarily autistic traits. We suggest that future EEG studies in autism may benefit from accounting for sensory sensitivities. En ligne : http://dx.doi.org/10.1002/aur.2759 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=483

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