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Oculomotor atypicalities in Developmental Coordination Disorder.

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Title: Oculomotor atypicalities in Developmental Coordination Disorder.
Authors: Sumner, Emma, Hutton, Samuel B., Kuhn, Gustav, Hill, Elisabeth L.
Source: Developmental Science. Jan2018, Vol. 21 Issue 1, pn/a-1. 12p.
Subjects: Apraxia, Oculomotor nerve diseases, Cognitive ability, Developmental psychology, Cognitive development
Abstract: Children with Developmental Coordination Disorder ( DCD) fail to acquire adequate motor skill, yet surprisingly little is known about the oculomotor system in DCD. Successful completion of motor tasks is supported by accurate visual feedback. The purpose of this study was to determine whether any oculomotor differences can distinguish between children with and without a motor impairment. Using eye tracking technology, visual fixation, smooth pursuit, and pro- and anti-saccade performance were assessed in 77 children that formed three groups: children with DCD (aged 7-10), chronologically age ( CA) matched peers, and a motor-match ( MM) group (aged 4-7). Pursuit gain and response preparation in the pro- and anti-saccade tasks were comparable across groups. Compared to age controls, children with DCD had deficits in maintaining engagement in the fixation and pursuit tasks, and made more anti-saccade errors. The two typically developing groups performed similarly, except on the fast speed smooth pursuit and antisaccade tasks, where the CA group outperformed the younger MM group. The findings suggest that children with DCD have problems with saccadic inhibition and maintaining attention on a visual target. Developmental patterns were evident in the typically developing groups, suggesting that the pursuit system and cognitive control develop with age. This study adds to the literature by being the first to systematically identify specific oculomotor differences between children with and without a motor impairment. Further examination of oculomotor control may help to identify underlying processes contributing to DCD. A video abstract of this article can be viewed at: . [Correction added on 27 January 2017, after first online publication: The video abstract link was added.] [ABSTRACT FROM AUTHOR]
Copyright of Developmental Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Oculomotor atypicalities in Developmental Coordination Disorder.
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  Data: <searchLink fieldCode="AR" term="%22Sumner%2C+Emma%22">Sumner, Emma</searchLink><br /><searchLink fieldCode="AR" term="%22Hutton%2C+Samuel+B%2E%22">Hutton, Samuel B.</searchLink><br /><searchLink fieldCode="AR" term="%22Kuhn%2C+Gustav%22">Kuhn, Gustav</searchLink><br /><searchLink fieldCode="AR" term="%22Hill%2C+Elisabeth+L%2E%22">Hill, Elisabeth L.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Developmental+Science%22">Developmental Science</searchLink>. Jan2018, Vol. 21 Issue 1, pn/a-1. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Apraxia%22">Apraxia</searchLink><br /><searchLink fieldCode="DE" term="%22Oculomotor+nerve+diseases%22">Oculomotor nerve diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Cognitive+ability%22">Cognitive ability</searchLink><br /><searchLink fieldCode="DE" term="%22Developmental+psychology%22">Developmental psychology</searchLink><br /><searchLink fieldCode="DE" term="%22Cognitive+development%22">Cognitive development</searchLink>
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  Data: Children with Developmental Coordination Disorder ( DCD) fail to acquire adequate motor skill, yet surprisingly little is known about the oculomotor system in DCD. Successful completion of motor tasks is supported by accurate visual feedback. The purpose of this study was to determine whether any oculomotor differences can distinguish between children with and without a motor impairment. Using eye tracking technology, visual fixation, smooth pursuit, and pro- and anti-saccade performance were assessed in 77 children that formed three groups: children with DCD (aged 7-10), chronologically age ( CA) matched peers, and a motor-match ( MM) group (aged 4-7). Pursuit gain and response preparation in the pro- and anti-saccade tasks were comparable across groups. Compared to age controls, children with DCD had deficits in maintaining engagement in the fixation and pursuit tasks, and made more anti-saccade errors. The two typically developing groups performed similarly, except on the fast speed smooth pursuit and antisaccade tasks, where the CA group outperformed the younger MM group. The findings suggest that children with DCD have problems with saccadic inhibition and maintaining attention on a visual target. Developmental patterns were evident in the typically developing groups, suggesting that the pursuit system and cognitive control develop with age. This study adds to the literature by being the first to systematically identify specific oculomotor differences between children with and without a motor impairment. Further examination of oculomotor control may help to identify underlying processes contributing to DCD. A video abstract of this article can be viewed at: . [Correction added on 27 January 2017, after first online publication: The video abstract link was added.] [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Developmental Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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