DISCOURSE CHARACTERISTICS OF RIGHT CVA PATIENTS

右脑损害患者话语的产生 将分析评价语篇生成与语篇生成的关系 以前位或后位为主的患者的注意能力 损伤。10名受试者主要是前部，10名受试者主要是前部 右脑后动脉粥样硬化性脑梗塞，以及 将有10名匹配的对照受试者参加。损伤位置将是 由中风发病后同一时间进行的脑部CT扫描确定。 说明性话语、叙事性话语和程序性话语将通过 随机分配四项任务作为对照进行练习和 疲劳效应。回复将被录音，逐字转录， 并对信息内容和凝聚力进行了分析。信息性的 内容分析将包括衡量传达基本信息的能力， 详尽的、无关的、多余的、离题的和错误的信息。 其他措施将包括语速(每分钟字数)和 交际效率指数由交际量与交际量之比 基本单位为作品制作总数。凝聚力 分析将包括结构衔接的测量(填充词和 短语)和指称(无指称的代词、不确定词、 指示语术语)。注意力的能力将取决于在 标准化测试旨在评估注意力技能和单侧 视觉疏忽。具有计划比较的多变量分析将是 应用于信息内容变量、内聚力变量， 并对注意测验的成套测验成绩进行初步比较 风湿性心脏病前后组，并对获得的汇总数据进行对比 从这两组受试者与对照组比较。皮尔逊-产品 在语篇变量和语篇变量之间进行矩相关 在注意任务中获得的分数。还将对数据进行分析 识别影响语篇产生的任务差异。它是 假设右脑后部功能障碍的受试者 在话语任务上的表现会比那些 前部损害，而话语表现将与 注意力测试分数。

The production of discourse by patients with right hemisphere-damage (RHD) will be analyzed to assess the relationship between discourse production and attentional capacity in patients with primarily anterior or posterior lesions. Ten subjects with primarily anterior and ten with primarily posterior atherothrombotic brain infarction in the right hemisphere, and ten matched control subjects will participate. Lesion location will be determined from brain CT scans given at a uniform time from stroke onset. Expository, narrative, and procedural discourse will be elicited through four tasks that are randomly administered to control for practice and fatigue effects. Responses will be tape recorded, transcribed verbatim, and analyzed for informational content and cohesion. The informational content analysis will include measures of the ability to convey essential, elaborative, irrelevant, redundant, off-topic and incorrect information. Additional measures will include rate of speech (words per minute) and a communicative efficiency index derived from the ratio of number of essential units to the total number of works produced. The cohesion analysis will include measures of structural cohesion (filler words and phrases), and reference (pronouns without referents, indefinite words, deictic terms). Attentional capacity will be determined by performance on standardized tests designed to assess attentional skills and unilateral visual neglect. Multivariate analyses with planned comparisons will be applied to the informational content variables, to the cohesion variables, and to the attentional test battery scores to compare the primarily anterior and posterior RHD groups and to contrast the pooled data obtained from these two groups with that of the control subjects. Pearson-product moment correlations will be conducted between the discourse variables and the scores obtained on the attentional tasks. Data also will be analyzed to identify task differences that affect discourse production. It is hypothesized that the subjects with posterior right hemisphere dysfunction will perform more poorly on the discourse tasks than the patients with anterior lesions, and the discourse performance will correlate with attentional test scores.