17 recherche sur le mot-clé 'Line-bisection'

Influence of reading habits on line bisection / Sylvie CHOKRON in Cognitive Brain Research, 1-4 (December 1993)

Public ISBD [article]  inCognitive Brain Research > 1-4 (December 1993) . - p.219-222 Titre : Influence of reading habits on line bisection Type de document : texte imprimé Auteurs : Sylvie CHOKRON, Auteur ; Michel IMBERT, Auteur Année de publication : 1993 Article en page(s) : p.219-222 Langues : Anglais (eng) Mots-clés : Reading-habit Line-bisection Hemispheric-activation Neglect-syndrome Index. décimale : PER Périodiques Résumé : The effect of scanning direction on perception of space is studied with a visuo-motor bisection task, among 120 normal dextrals with opposite reading habits (60 French subjects, 60 Israeli subjects). Bisection is found to depend upon subject's reading habits. Israeli bisected the line to the right of the objective centre, while French subjects placed their subjective middle to the left of the objective one. Results are discussed with respect to hemispheric activation theories, directional hypotheses and the neglect syndrome. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=782 [article] Influence of reading habits on line bisection [texte imprimé] / Sylvie CHOKRON, Auteur ; Michel IMBERT, Auteur . - 1993 . - p.219-222. Langues : Anglais (eng) in Cognitive Brain Research > 1-4 (December 1993) . - p.219-222 Mots-clés : Reading-habit Line-bisection Hemispheric-activation Neglect-syndrome Index. décimale : PER Périodiques Résumé : The effect of scanning direction on perception of space is studied with a visuo-motor bisection task, among 120 normal dextrals with opposite reading habits (60 French subjects, 60 Israeli subjects). Bisection is found to depend upon subject's reading habits. Israeli bisected the line to the right of the objective centre, while French subjects placed their subjective middle to the left of the objective one. Results are discussed with respect to hemispheric activation theories, directional hypotheses and the neglect syndrome. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=782

Visuospatial Bias in Children with Autism Spectrum Disorder: Evidence from Line Bisection Tasks / Chunyan LIU in Journal of Autism and Developmental Disorders, 52-11 (November 2022)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 52-11 (November 2022) . - p.4861-4871 Titre : Visuospatial Bias in Children with Autism Spectrum Disorder: Evidence from Line Bisection Tasks Type de document : texte imprimé Auteurs : Chunyan LIU, Auteur ; Huajie ZHAI, Auteur ; Shuhua SU, Auteur ; Sutao SONG, Auteur ; Gongxiang CHEN, Auteur ; Yi JIANG, Auteur Article en page(s) : p.4861-4871 Langues : Anglais (eng) Mots-clés : Attention  Autism Spectrum Disorder  Child  Cues  Humans  Space Perception  Visual Perception  Autism spectrum disorder  Line bisection task  Visual processing  Visuospatial bias Index. décimale : PER Périodiques Résumé : Previous studies have found reduced leftward bias of facial processing in individuals with Autism Spectrum Disorder (ASD). However, it is not clear whether they manifest a leftward bias in general visual processing. To shed light on this issue, the current study used the manual line bisection task to assess children 5 to 15 years of age with ASD as well as typically developing (TD) children. Results showed that children with ASD, similar to TD children, demonstrate a leftward bias in general visual processing, especially for bisecting long lines (â§Â 80 mm). In both groups, participant performance in line bisection was affected by the hand used, the length of the line, the cueing symbol, and the location of the symbol. The ASD group showed a rightward bias when bisecting short lines (30 mm) with their left hands, which slightly differed from the TD group. These results indicate that while ASD individuals and TD individuals share a similar leftward bias in general visual processing, when using their left hands to bisect short lines, ASD individuals may show an atypical bias pattern. En ligne : http://dx.doi.org/10.1007/s10803-021-05350-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=489 [article] Visuospatial Bias in Children with Autism Spectrum Disorder: Evidence from Line Bisection Tasks [texte imprimé] / Chunyan LIU, Auteur ; Huajie ZHAI, Auteur ; Shuhua SU, Auteur ; Sutao SONG, Auteur ; Gongxiang CHEN, Auteur ; Yi JIANG, Auteur . - p.4861-4871. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 52-11 (November 2022) . - p.4861-4871 Mots-clés : Attention  Autism Spectrum Disorder  Child  Cues  Humans  Space Perception  Visual Perception  Autism spectrum disorder  Line bisection task  Visual processing  Visuospatial bias Index. décimale : PER Périodiques Résumé : Previous studies have found reduced leftward bias of facial processing in individuals with Autism Spectrum Disorder (ASD). However, it is not clear whether they manifest a leftward bias in general visual processing. To shed light on this issue, the current study used the manual line bisection task to assess children 5 to 15 years of age with ASD as well as typically developing (TD) children. Results showed that children with ASD, similar to TD children, demonstrate a leftward bias in general visual processing, especially for bisecting long lines (â§Â 80 mm). In both groups, participant performance in line bisection was affected by the hand used, the length of the line, the cueing symbol, and the location of the symbol. The ASD group showed a rightward bias when bisecting short lines (30 mm) with their left hands, which slightly differed from the TD group. These results indicate that while ASD individuals and TD individuals share a similar leftward bias in general visual processing, when using their left hands to bisect short lines, ASD individuals may show an atypical bias pattern. En ligne : http://dx.doi.org/10.1007/s10803-021-05350-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=489

Altered modulation of gamma oscillation frequency by speed of visual motion in children with autism spectrum disorders / Tatiana A. STROGANOVA in Journal of Neurodevelopmental Disorders, 7-1 (December 2015)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.21 Titre : Altered modulation of gamma oscillation frequency by speed of visual motion in children with autism spectrum disorders Type de document : texte imprimé Auteurs : Tatiana A. STROGANOVA, Auteur ; Anna V. BUTORINA, Auteur ; Olga V. SYSOEVA, Auteur ; Andrey O. PROKOFYEV, Auteur ; Anastasia Yu NIKOLAEVA, Auteur ; Marina M. TSETLIN, Auteur ; Elena V. OREKHOVA, Auteur Article en page(s) : p.21 Langues : Anglais (eng) Mots-clés : Asd  Oblique line orientation threshold  Stimulus velocity  Visual gamma oscillation frequency Index. décimale : PER Périodiques Résumé : BACKGROUND: Recent studies link autism spectrum disorders (ASD) with an altered balance between excitation and inhibition (E/I balance) in cortical networks. The brain oscillations in high gamma-band (50-120 Hz) are sensitive to the E/I balance and may appear useful biomarkers of certain ASD subtypes. The frequency of gamma oscillations is mediated by level of excitation of the fast-spiking inhibitory basket cells recruited by increasing strength of excitatory input. Therefore, the experimental manipulations affecting gamma frequency may throw light on inhibitory networks dysfunction in ASD. METHODS: Here, we used magnetoencephalography (MEG) to investigate modulation of visual gamma oscillation frequency by speed of drifting annular gratings (1.2, 3.6, 6.0 degrees /s) in 21 boys with ASD and 26 typically developing boys aged 7-15 years. Multitaper method was used for analysis of spectra of gamma power change upon stimulus presentation and permutation test was applied for statistical comparisons. We also assessed in our participants visual orientation discrimination thresholds, which are thought to depend on excitability of inhibitory networks in the visual cortex. RESULTS: Although frequency of the oscillatory gamma response increased with increasing velocity of visual motion in both groups of participants, the velocity effect was reduced in a substantial proportion of children with ASD. The range of velocity-related gamma frequency modulation correlated inversely with the ability to discriminate oblique line orientation in the ASD group, while no such correlation has been observed in the group of typically developing participants. CONCLUSIONS: Our findings suggest that abnormal velocity-related gamma frequency modulation in ASD may constitute a potential biomarker for reduced excitability of fast-spiking inhibitory neurons in a subset of children with ASD. En ligne : http://dx.doi.org/10.1186/s11689-015-9121-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347 [article] Altered modulation of gamma oscillation frequency by speed of visual motion in children with autism spectrum disorders [texte imprimé] / Tatiana A. STROGANOVA, Auteur ; Anna V. BUTORINA, Auteur ; Olga V. SYSOEVA, Auteur ; Andrey O. PROKOFYEV, Auteur ; Anastasia Yu NIKOLAEVA, Auteur ; Marina M. TSETLIN, Auteur ; Elena V. OREKHOVA, Auteur . - p.21. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.21 Mots-clés : Asd  Oblique line orientation threshold  Stimulus velocity  Visual gamma oscillation frequency Index. décimale : PER Périodiques Résumé : BACKGROUND: Recent studies link autism spectrum disorders (ASD) with an altered balance between excitation and inhibition (E/I balance) in cortical networks. The brain oscillations in high gamma-band (50-120 Hz) are sensitive to the E/I balance and may appear useful biomarkers of certain ASD subtypes. The frequency of gamma oscillations is mediated by level of excitation of the fast-spiking inhibitory basket cells recruited by increasing strength of excitatory input. Therefore, the experimental manipulations affecting gamma frequency may throw light on inhibitory networks dysfunction in ASD. METHODS: Here, we used magnetoencephalography (MEG) to investigate modulation of visual gamma oscillation frequency by speed of drifting annular gratings (1.2, 3.6, 6.0 degrees /s) in 21 boys with ASD and 26 typically developing boys aged 7-15 years. Multitaper method was used for analysis of spectra of gamma power change upon stimulus presentation and permutation test was applied for statistical comparisons. We also assessed in our participants visual orientation discrimination thresholds, which are thought to depend on excitability of inhibitory networks in the visual cortex. RESULTS: Although frequency of the oscillatory gamma response increased with increasing velocity of visual motion in both groups of participants, the velocity effect was reduced in a substantial proportion of children with ASD. The range of velocity-related gamma frequency modulation correlated inversely with the ability to discriminate oblique line orientation in the ASD group, while no such correlation has been observed in the group of typically developing participants. CONCLUSIONS: Our findings suggest that abnormal velocity-related gamma frequency modulation in ASD may constitute a potential biomarker for reduced excitability of fast-spiking inhibitory neurons in a subset of children with ASD. En ligne : http://dx.doi.org/10.1186/s11689-015-9121-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347

An On-Line Survey of University Students with Autism Spectrum Disorder in Australia and New Zealand: Characteristics, Support Satisfaction, and Advocacy / Anastasia H. ANDERSON in Journal of Autism and Developmental Disorders, 50-2 (February 2020)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 50-2 (February 2020) . - p.440-454 Titre : An On-Line Survey of University Students with Autism Spectrum Disorder in Australia and New Zealand: Characteristics, Support Satisfaction, and Advocacy Type de document : texte imprimé Auteurs : Anastasia H. ANDERSON, Auteur ; Mark CARTER, Auteur ; Jennifer STEPHENSON, Auteur Article en page(s) : p.440-454 Langues : Anglais (eng) Mots-clés : Advocacy  Autism spectrum disorder  Educational supports and services  On-line survey  University students Index. décimale : PER Périodiques Résumé : An on-line survey of 102 (51 females; undergraduate and graduate) university students with ASD across Australia and New Zealand examined student characteristics and satisfaction with academic and non-academic supports. A broad range of disciplines were studied, and the participants' reported strengths included a passion for learning, strong technology skills, and creative thoughts. The participants' greatest concerns were academic requirements and mental health, including high rates of self-harm and suicidal ideation. Despite support satisfaction ratings being high, support usage was low, possibly indicating a mismatch of supports and needs, lack of awareness of available supports, and/or poor advocacy skills. En ligne : http://dx.doi.org/10.1007/s10803-019-04259-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=416 [article] An On-Line Survey of University Students with Autism Spectrum Disorder in Australia and New Zealand: Characteristics, Support Satisfaction, and Advocacy [texte imprimé] / Anastasia H. ANDERSON, Auteur ; Mark CARTER, Auteur ; Jennifer STEPHENSON, Auteur . - p.440-454. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 50-2 (February 2020) . - p.440-454 Mots-clés : Advocacy  Autism spectrum disorder  Educational supports and services  On-line survey  University students Index. décimale : PER Périodiques Résumé : An on-line survey of 102 (51 females; undergraduate and graduate) university students with ASD across Australia and New Zealand examined student characteristics and satisfaction with academic and non-academic supports. A broad range of disciplines were studied, and the participants' reported strengths included a passion for learning, strong technology skills, and creative thoughts. The participants' greatest concerns were academic requirements and mental health, including high rates of self-harm and suicidal ideation. Despite support satisfaction ratings being high, support usage was low, possibly indicating a mismatch of supports and needs, lack of awareness of available supports, and/or poor advocacy skills. En ligne : http://dx.doi.org/10.1007/s10803-019-04259-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=416

Behavioural and psychological features of PTEN mutations: a systematic review of the literature and meta-analysis of the prevalence of autism spectrum disorder characteristics / Katherine CUMMINGS in Journal of Neurodevelopmental Disorders, 14 (2022)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 14 (2022) Titre : Behavioural and psychological features of PTEN mutations: a systematic review of the literature and meta-analysis of the prevalence of autism spectrum disorder characteristics Type de document : texte imprimé Auteurs : Katherine CUMMINGS, Auteur ; Alice WATKINS, Auteur ; Chris JONES, Auteur ; Renuka DIAS, Auteur ; Alice WELHAM, Auteur Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/epidemiology/genetics  Germ-Line Mutation  Humans  Mutation  PTEN Phosphohydrolase/genetics  Prevalence  Retrospective Studies  Autism spectrum disorder  Behaviour  Cognition  Development  Emotional difficulties  Pten  PTEN hamartoma tumour syndrome Index. décimale : PER Périodiques Résumé : BACKGROUND: Phosphatase and tensin homologue (PTEN) is a cancer suppressor gene. Constitutional mutations affecting this gene are associated with several conditions, collectively termed PTEN hamartoma tumour syndromes (PHTS). In addition to hamartomas, PTEN aberrations have been associated with a range of non-tumoural phenotypes such as macrocephaly, and research indicates possibly increased rates of developmental delay and autism spectrum disorder (ASD) for people with germline mutations affecting PTEN. METHOD: A systematic review of literature reporting behavioural and psychological variables for people with constitutional PTEN mutations/PHTS was conducted using four databases. Following in-depth screening, 25 articles met the inclusion criteria and were used in the review. Fourteen papers reported the proportion of people with PTEN mutations/PTHS meeting criteria for or having characteristics of ASD and were thus used in a pooled prevalence meta-analysis. RESULTS: Meta-analysis using a random effects model estimated pooled prevalence of ASD characteristics at 25% (95% CI 16-33%), although this should be interpreted cautiously due to possible biases in existing literature. Intellectual disability and developmental delay (global, motor and speech and language) were also reported frequently. Emotional difficulties and impaired cognitive functioning in specific domains were noted but assessed/reported less frequently. Methods of assessment of psychological/behavioural factors varied widely (with retrospective examination of medical records common). CONCLUSIONS: Existing research suggests approximately 25% of people with constitutional PTEN mutations may meet criteria for or have characteristics of ASD. Studies have also begun to establish a range of possible cognitive impairments in affected individuals, especially when ASD is also reported. However, further large-scale studies are needed to elucidate psychological/behavioural corollaries of this mutation, and how they may relate to physiological/physical characteristics. En ligne : https://dx.doi.org/10.1186/s11689-021-09406-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574 [article] Behavioural and psychological features of PTEN mutations: a systematic review of the literature and meta-analysis of the prevalence of autism spectrum disorder characteristics [texte imprimé] / Katherine CUMMINGS, Auteur ; Alice WATKINS, Auteur ; Chris JONES, Auteur ; Renuka DIAS, Auteur ; Alice WELHAM, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 14 (2022) Mots-clés : Autism Spectrum Disorder/epidemiology/genetics  Germ-Line Mutation  Humans  Mutation  PTEN Phosphohydrolase/genetics  Prevalence  Retrospective Studies  Autism spectrum disorder  Behaviour  Cognition  Development  Emotional difficulties  Pten  PTEN hamartoma tumour syndrome Index. décimale : PER Périodiques Résumé : BACKGROUND: Phosphatase and tensin homologue (PTEN) is a cancer suppressor gene. Constitutional mutations affecting this gene are associated with several conditions, collectively termed PTEN hamartoma tumour syndromes (PHTS). In addition to hamartomas, PTEN aberrations have been associated with a range of non-tumoural phenotypes such as macrocephaly, and research indicates possibly increased rates of developmental delay and autism spectrum disorder (ASD) for people with germline mutations affecting PTEN. METHOD: A systematic review of literature reporting behavioural and psychological variables for people with constitutional PTEN mutations/PHTS was conducted using four databases. Following in-depth screening, 25 articles met the inclusion criteria and were used in the review. Fourteen papers reported the proportion of people with PTEN mutations/PTHS meeting criteria for or having characteristics of ASD and were thus used in a pooled prevalence meta-analysis. RESULTS: Meta-analysis using a random effects model estimated pooled prevalence of ASD characteristics at 25% (95% CI 16-33%), although this should be interpreted cautiously due to possible biases in existing literature. Intellectual disability and developmental delay (global, motor and speech and language) were also reported frequently. Emotional difficulties and impaired cognitive functioning in specific domains were noted but assessed/reported less frequently. Methods of assessment of psychological/behavioural factors varied widely (with retrospective examination of medical records common). CONCLUSIONS: Existing research suggests approximately 25% of people with constitutional PTEN mutations may meet criteria for or have characteristics of ASD. Studies have also begun to establish a range of possible cognitive impairments in affected individuals, especially when ASD is also reported. However, further large-scale studies are needed to elucidate psychological/behavioural corollaries of this mutation, and how they may relate to physiological/physical characteristics. En ligne : https://dx.doi.org/10.1186/s11689-021-09406-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574

Brief Report: Role of Parent-Reported Executive Functioning and Anxiety in Insistence on Sameness in Individuals with Germline PTEN Mutations / Mirko ULJAREVIĆ in Journal of Autism and Developmental Disorders, 52-1 (January 2022)  

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CGG-repeat dynamics and FMR1 gene silencing in fragile X syndrome stem cells and stem cell-derived neurons / Yin ZHOU in Molecular Autism, 7 (2016)  

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Disrupted fetal carbohydrate metabolism in children with autism spectrum disorder / Serena B. GUMUSOGLU in Journal of Neurodevelopmental Disorders, 17 (2025)  

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How accurate are autistic adults and those high in autistic traits at making face-to-face line-of-sight judgements? / Megan FREETH in Autism, 24-6 (August 2020)  

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Increased expression of the PI3K catalytic subunit p110delta underlies elevated S6 phosphorylation and protein synthesis in an individual with autism from a multiplex family / Ashwini C. POOPAL in Molecular Autism, 7 (2016)  

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