Operation of the phoneme-to-grapheme conversion mechanism in a brain injured patient |
| |
| Authors: | Richard J Sanders Alfonso Caramazza |
| |
| Institution: | (1) Cognitive Neuropsychology Laboratory, The Johns Hopkins University, 21218 Baltimore, Maryland, USA;(2) Cognitive Neuropsychology Laboratory, Cognitive Science Center, The Johns Hopkins University, 21218 Baltimore, MD, USA |
| |
| Abstract: | We report the performance of a dysgraphic patient who exhibited impaired ability to spell some words in the face of spared ability to spell nonwords. Word errors generally were phonologically plausible responses. Extensive testing supported the conclusion that the patient used non-lexical processes to spell many words. An examination of the phonologically plausible errors showed that there was a significant correlation between the relative frequency of the patient's choice of phoneme-grapheme mapping options and the relative frequency of use of the same options in the written language. Furthermore, the selection of a specific grapheme option for a given phoneme was determined by the within-syllable position of the phoneme. This result indicates that syllable structure is involved in the process of converting phonology to orthography in non-lexical spelling.The research reported here was supported by NIH grant NS22201 and by a grant from the Seaver Institute. This support is gratefully acknowledged. |
| |
| Keywords: | Writing Dysgraphia Phoneme-grapheme Conversion |
| 本文献已被 SpringerLink 等数据库收录！ |
|
