DISCOURSE CHARACTERISTICS OF RIGHT CVA PATIENTS

右半球损伤患者话语的产生 本文将分析语篇产出与 和注意力能力的患者主要是前或后 病变 10名受试者主要是前部和10名主要是 右半球后部动脉粥样硬化血栓性脑梗死，以及 10名匹配的对照受试者将参与。 病变位置将是 从中风发作后的统一时间进行脑部CT扫描确定。 解释性、叙述性和程序性话语将通过以下方式引出： 四个任务，随机管理，以控制实践和 疲劳效应。 回答将被录音，逐字转录， 并分析了信息内容和凝聚力。 信息化 内容分析将包括对传达基本信息的能力的测量， 详细的、无关的、多余的、离题的和不正确的信息。 其他措施将包括讲话速度（每分钟字数）和 沟通效率指数来源于 基本单位的作品制作总数。 凝聚力 分析将包括结构衔接措施（填充词和 短语），和指称（没有指称的代词，不定词， 指示词）。 注意力能力将取决于以下方面的表现： 标准化测试旨在评估注意力技能和单方面 视觉忽视 计划比较的多变量分析将 应用于信息内容变量，应用于内聚变量， 和注意力测试组合得分来比较 前后RHD组，并对比所获得的汇总数据 与对照组相比， 皮尔逊积 在语篇变量之间进行矩相关分析， 注意力任务的得分。 数据也将被分析 识别影响话语产出的任务差异。 是 假设右后半球功能障碍的受试者 在话语任务上的表现比那些 前病变，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.