PROSPECTIVE ANALYSIS OF MODEL OF WRITING AND SPELLING

为了更好地理解神经心理学机制， 构成后天性书写（和拼写）障碍基础的解剖学位点， 将研究具有获得性失写症的连续患者。 目标是 为了前瞻性地测试一个写作的神经心理学模型， 从初步研究和以前的文献发展而来。 这些研究 分析行为和病理解剖（通过计算机断层扫描， CT）的以下失写症：语音，词汇，语义和 不实用的 提出的基础解剖结构包括：缘上回 或潜在的脑干（语音），后角回（词汇）， 被认为是重要的语言理解（语义）和 顶叶（无核）。 从这些失写症的具体功能 该模型的组成部分已经开发。 包括语言 （语音，词汇，语义）和运动成分（字形区， 失语性失写症）。 此外，该模型还提出， 语言信息传递到运动神经的过渡阶段 系统. 使用预先设计和规范的书写、拼写和阅读 电池，以及其他语言和非语言测试， 研究人员将对一系列左心室功能不全的患者进行研究。 大脑半球损伤 所有患者将获得整个电池和所有 我会做CT。 然后将分析这些测试产生的数据 使用各种统计方法，以验证或无效 模型预测的行为和解剖假设。 这项研究的结果将有助于更好地分类 以及更好地理解大脑与行为的关系 这些常见的语言障碍。 进一步发展 特定的写作模式可能会导致额外的发展 失写症的治疗方法

In order to better understand the neuropsychological mechanisms and anatomic loci that underlie acquired disorders of writing (and spelling), consecutive patients with acquired agraphias will be studied. The goal is to prospectively test a neuropsychological model of writing that was developed from preliminary studies and previous literature. These studies analyzed the behavior and pathological anatomy (by computerized tomography, CT) of the following agraphias: phonological, lexical, semantic and apractic. The proposed underlying anatomy included: supramarginal gyrus or underlying insula (phonological), posterior angular gyrus (lexical), areas thought to be important for language comprehension (semantic) and the parietal lobe (apractic). From these agraphias the specific functional components of the model were developed. They include linguistic (phonological, lexical, semantic) and motor components (graphemic area for apractic agraphia). In addition, the model proposes that there is a transitional phase when linguistic information is passed to the motor systems. Using a previously designed and normed writing, spelling and reading battery, as well as other language and non-language tests, the investigators will study a consecutive series of patients with left hemispheric lesions. All patients will be given the entire battery and all will have CT. The data generated from these tests will then be analyzed using a variety of statistical methods in order to validate or invalidate the behavioral and anatomic hypotheses predicted by the model. The results of this study will help lead to a better classification of the agraphias and a better understanding of the brain-behavior relationships underlying these common language disorders. Further development of a specific model of writing may lead to the development of additional therapeutic approaches to agraphia.