Altered GABA Concentration in Brain Motor Area Is Associated with the Severity of Motor Disabilities in Individuals with Autism Spectrum Disorder / Yumi UMESAWA in Journal of Autism and Developmental Disorders, 50-8 (August 2020)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 50-8 (August 2020) . - p.2710-2722 Titre : Altered GABA Concentration in Brain Motor Area Is Associated with the Severity of Motor Disabilities in Individuals with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Yumi UMESAWA, Auteur ; Kanae MATSUSHIMA, Auteur ; Takeshi ATSUMI, Auteur ; Toshihiro KATO, Auteur ; Reiko FUKATSU, Auteur ; Makoto WADA, Auteur ; Masakazu IDE, Auteur Article en page(s) : p.2710-2722 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Developmental coordination disorder  Gamma-aminobutyric acid  Magnetic resonance spectroscopy  Primary motor area  Supplementary motor area Index. décimale : PER Périodiques Résumé : Several motor disabilities accompanied with autism spectrum disorder (ASD) are widely known despite limited reports of underlying neural mechanisms. Gamma-aminobutyric acid (GABA) levels in the motor-related cortical areas modulate several motor performances in healthy participants. We hypothesized that abnormal GABA concentrations in the primary motor area (M1) and supplementary motor area (SMA) associate with different motor difficulties for ASD adolescents/adults. We found that increased GABA concentrations in M1 measured using (1)H-magnetic resonance spectroscopy exhibited lower motor performance in tasks requiring increased muscle strength while lower GABA concentrations in SMA were associated with lower scores in tests measuring body coordination. The degrees of neural inhibition in the M1 and SMA regions would contribute to different dimensions of motor disabilities in autism. En ligne : http://dx.doi.org/10.1007/s10803-020-04382-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=428 [article] Altered GABA Concentration in Brain Motor Area Is Associated with the Severity of Motor Disabilities in Individuals with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Yumi UMESAWA, Auteur ; Kanae MATSUSHIMA, Auteur ; Takeshi ATSUMI, Auteur ; Toshihiro KATO, Auteur ; Reiko FUKATSU, Auteur ; Makoto WADA, Auteur ; Masakazu IDE, Auteur . - p.2710-2722. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 50-8 (August 2020) . - p.2710-2722 Mots-clés : Autism spectrum disorder  Developmental coordination disorder  Gamma-aminobutyric acid  Magnetic resonance spectroscopy  Primary motor area  Supplementary motor area Index. décimale : PER Périodiques Résumé : Several motor disabilities accompanied with autism spectrum disorder (ASD) are widely known despite limited reports of underlying neural mechanisms. Gamma-aminobutyric acid (GABA) levels in the motor-related cortical areas modulate several motor performances in healthy participants. We hypothesized that abnormal GABA concentrations in the primary motor area (M1) and supplementary motor area (SMA) associate with different motor difficulties for ASD adolescents/adults. We found that increased GABA concentrations in M1 measured using (1)H-magnetic resonance spectroscopy exhibited lower motor performance in tasks requiring increased muscle strength while lower GABA concentrations in SMA were associated with lower scores in tests measuring body coordination. The degrees of neural inhibition in the M1 and SMA regions would contribute to different dimensions of motor disabilities in autism. En ligne : http://dx.doi.org/10.1007/s10803-020-04382-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=428

Weakened Bayesian Calibration for Tactile Temporal Order Judgment in Individuals with Higher Autistic Traits / Makoto WADA in Journal of Autism and Developmental Disorders, 53-1 (January 2023)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 53-1 (January 2023) . - p.378-389 Titre : Weakened Bayesian Calibration for Tactile Temporal Order Judgment in Individuals with Higher Autistic Traits Type de document : Texte imprimé et/ou numérique Auteurs : Makoto WADA, Auteur ; Yumi UMESAWA, Auteur ; Misako SANO, Auteur ; Seiki TAJIMA, Auteur ; Shinichiro KUMAGAYA, Auteur ; Makoto MIYAZAKI, Auteur Article en page(s) : p.378-389 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Previous psychophysical studies reported a positive aftereffect in tactile temporal order judgments, which can be explained by the Bayesian estimation model ( ˜Bayesian calibration’). We investigated the relationship between Bayesian calibration and autistic traits in participants with typical development (TD) and autism spectrum disorder (ASD). Bayesian calibration was weakened in TD participants with high autistic traits, consistent with the ˜hypo-priors’ hypothesis for autistic perceptions. The results from the ASD group were generally observed as a continuation of those from the TD groups. Meanwhile, two ASD participants showed irregularly large positive or negative aftereffects. We discussed the mechanisms behind the general results among TD and ASD participants and two particular results among ASD participants based on the Bayesian estimation model. En ligne : https://doi.org/10.1007/s10803-022-05442-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=493 [article] Weakened Bayesian Calibration for Tactile Temporal Order Judgment in Individuals with Higher Autistic Traits [Texte imprimé et/ou numérique] / Makoto WADA, Auteur ; Yumi UMESAWA, Auteur ; Misako SANO, Auteur ; Seiki TAJIMA, Auteur ; Shinichiro KUMAGAYA, Auteur ; Makoto MIYAZAKI, Auteur . - p.378-389. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 53-1 (January 2023) . - p.378-389 Index. décimale : PER Périodiques Résumé : Previous psychophysical studies reported a positive aftereffect in tactile temporal order judgments, which can be explained by the Bayesian estimation model ( ˜Bayesian calibration’). We investigated the relationship between Bayesian calibration and autistic traits in participants with typical development (TD) and autism spectrum disorder (ASD). Bayesian calibration was weakened in TD participants with high autistic traits, consistent with the ˜hypo-priors’ hypothesis for autistic perceptions. The results from the ASD group were generally observed as a continuation of those from the TD groups. Meanwhile, two ASD participants showed irregularly large positive or negative aftereffects. We discussed the mechanisms behind the general results among TD and ASD participants and two particular results among ASD participants based on the Bayesian estimation model. En ligne : https://doi.org/10.1007/s10803-022-05442-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=493

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