I.R.C.C.S. S. Giovanni di Dio, Fatabene Fratelli, Brescia, Italy.
Cogn Neuropsychol. 2003 Mar 1;20(2):99-114. doi: 10.1080/02643290244000158.
We report the case of a patient who recovered from a clinical picture of fluent aphasia to selective dysgraphia. The features of the writing disorder were compatible with a graphemic output buffer dysfunction (errors in all spelling tasks and for all type of material, affected by word length and consisting mostly of graphemic deviations), with the exception of the lack of transposition errors and position preference. Further, the spelling disorder was selective for vowels, replicating the original observation by Cubelli (1991). A similar, although milder, error pattern was also observed in reading tasks, in particular for nonwords, suggesting that the locus of dysfunction involves a processing stage shared by reading and writing. These findings support the notion that the consonant-vowel status is a property of graphemic representations, and is compatible with that a common buffer is involved in spelling and reading. We discuss the implications of selective vowel disorders for current models of the spelling system.
我们报告了一例患者，其从流畅性失语症的临床症状中恢复过来，表现为选择性失写症。书写障碍的特征与字形输出缓冲区功能障碍一致（所有拼写任务和所有类型的材料都存在错误，受单词长度影响，主要表现为字形偏差），但不存在置换错误和位置偏好。此外，拼写障碍仅针对元音，复制了 Cubelli（1991）的原始观察结果。在阅读任务中也观察到类似但较轻的错误模式，特别是在非词中，这表明功能障碍的部位涉及阅读和书写共享的处理阶段。这些发现支持了这样一种观点，即辅音-元音状态是字形表示的一个属性，并且与拼写和阅读中涉及共同缓冲区的观点是一致的。我们讨论了选择性元音障碍对当前拼写系统模型的影响。
