Adaptive Skill Trajectories In Infants With Fragile X Syndrome
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Fragile X Syndrome
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No AccessPerspectives on Neurophysiology and Neurogenic Speech and Language DisordersArticle1 Jun 2006Motor Speech Function in Young Males With Fragile X Syndrome Elizabeth F. Barnes Elizabeth F. Barnes University of North Carolina at Chapel HillChapel Hill, NC Google Scholar More articles by this author https://doi.org/10.1044/nnsld16.2.3 SectionsAboutFull TextPDF ToolsAdd to favoritesDownload CitationTrack Citations ShareFacebookTwitterLinked In References Abbeduto, L., & Hagerman, R. (1997). Language and communication in FXS.Mental Retardation and Developmental Disabilities Research Reviews, 3, 313–322. Google Scholar Adams, L. (1998). Oral-motor and motor-speech characteristics of children with autism.Focus on Autism & Other Developmental Disabilities, 13(2), 108–112. Google Scholar Bailey, D. B.Jr., Hatton, D. D., & Skinner, M. (1998). Early developmental trajectories of boys with FXS.American Journal on Mental Retardation, 103, 29–39. Google Scholar Barnes, E. F., Roberts, J. 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Google Scholar Additional Resources FiguresReferencesRelatedDetails Volume 16Issue 2June 2006Pages: 3-7 Get Permissions Add to your Mendeley library History Published in issue: Jun 1, 2006 Metrics Downloaded 26 times Topicsasha-topicsasha-article-typesasha-sigsCopyright & Permissions© 2006 American Speech-Language-Hearing AssociationPDF DownloadLoading ...
Fragile X Syndrome
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Fragile X Syndrome
Adaptive functioning
Borderline intellectual functioning
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Fragile X Syndrome
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Off-the-shelf support containing all the vital information practitioners need to know about Fragile X Syndrome, this book includes: * Definition of Fragile X Syndrome and its educational implications * Ideas on how to improve access to the curriculum * Advice on how to manage support staff * Guidance on coordinating home and school liaison
Fragile X Syndrome
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Many studies have reported that deficits in visual motion processing exist in groups with developmental disorders such as autism, Williams syndrome, and Dyslexia. More recently, evidence has shown that a selective motion processing deficit is present in adults with fragile X syndrome (FXS), the most common cause of inherited mental delay. Using a direction discrimination task, adults with FXS were found to have increased thresholds for motion but no difference on form perception compared to controls (Kogan et al., 2004). Here we examined low-level visual processing in infants with FXS to explore the developmental trajectory of this putative deficit. Using a forced-choice preferential looking paradigm, we measured detection thresholds for first-order (luminance defined) and second-order (contrast defined) moving and static stimuli. Detection thresholds for static first- and second-order stimuli were consistent for typical infants and those with FXS, which would be expected based on previous work. More interestingly, there was no difference in motion detection thresholds for the two groups, even for contrast defined second-order motion. The results indicate that infants with FXS have detection thresholds comparable to mental age-matched controls, and are important because they rule out a low-level motion processing deficit in infants with FXS. Evidently, any visual deficits manifested in FXS syndrome must arise at a later stage of development or at a higher stage of visual processing.
Fragile X Syndrome
Visual processing
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