A visual processing but no phonological disorder in a child with mixed dyslexia.
The case study of Martial, a French 9-year-old boy, who exhibits severe mixed dyslexia and surface dysgraphia is reported. Despite very poor pseudo-word reading, Martial has preserved phonological processing skills as his good oral language, good phoneme awareness and good verbal short-term memory s...
| Publicado en: | Cortex: A Journal Devoted to the Study of the Nervous System & Behavior Vol. 47; no. 10; pp. 1197 - 1219 |
|---|---|
| Autores principales: | , , , , , , |
| Formato: | case study research Journal Article |
| Publicado: |
Masson SPA
2011 Nov
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=108197154&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 108197154 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00109452 GMP jtl: Cortex: A Journal Devoted to the Study of the Nervous System & Behavior issn: 00109452 maglogo: N pubinfo: dt: 2011 Nov vid: 47 iid: 10 pid: 12473 pub: Masson SPA artinfo: ui: 108197154 108197154 2011320243 NLM21704984 108197154 ppf: 1197 ppct: 22 formats: tig: atl: A visual processing but no phonological disorder in a child with mixed dyslexia. aug: au: Valdois S Bidet-Ildei C Lassus-Sangosse D Reilhac C N'guyen-Morel MA Guinet E Orliaguet JP affil: Laboratoire de Psychologie et Neuro-Cognition (UMR 5105 CNRS), Université Pierre Mendès France, Grenoble, France; Centre National de la Recherche Scientifique, CNRS, France. sug: subj: Agraphia Complications Dyslexia Complications Psychomotor Performance Visual Perception Agraphia Physiopathology Case Control Studies Child Dyslexia Physiopathology Human Male Matched-Pair Analysis Phonetics Reference Values Learning Child: 6-12 years Male ab: The case study of Martial, a French 9-year-old boy, who exhibits severe mixed dyslexia and surface dysgraphia is reported. Despite very poor pseudo-word reading, Martial has preserved phonological processing skills as his good oral language, good phoneme awareness and good verbal short-term memory show. He exhibited a strong length effect when reading briefly presented words but no sign of mini-neglect. His letter-string processing abilities were assessed through tasks of whole and partial report. In whole report, Martial could only name a few letters from briefly displayed 5-consonant strings. He showed an initial-position advantage and a sharper than expected left-to-right gradient of performance. He performed better when asked to report a single cued letter within the string but then showed an atypical right-side advantage. The same rightward attentional bias was observed in whole report when top-down control was prevented. Otherwise, Martial showed preserved single letter identification skills and good processing of 5-letter strings when letters were sequentially displayed one at a time. His poor letter-string processing thus reflects a parallel visual processing disorder that is compatible with either a visual attention (VA) span or a visual short-term memory disorder. Martial was further engaged in a complex reaching movement task involving VA and simultaneous processing. He performed motor sequences not as a whole but as a succession of independent motor units, suggesting that his attention was not allocated in parallel to the two to-be-reached targets prior to movement execution. Against a more basic motor disorder however, he showed good performance in a task of cyclical pointing movements. The overall findings suggest that Martial suffers from a visual simultaneous processing disorder that disturbs letter identification in strings. Instead of being restricted to letter-string processing, this VA disorder might extend to non-verbal task. pubtype: Academic Journal doctype: case study research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|