SYNTACTIC ANALYSIS AND LANGUAGE PROCESSING IN APHASIA

这项研究的总体目的是澄清句子加工缺陷 在无语法Broca的失语症中，从而有助于 对句子处理机制有更全面的理解。 这项研究的起点是最近的一项发现，尽管他们的 “非句法”语言理解--几个无语法的布罗卡 失语者能够准确判断英语句子的语法性 体现了广泛的句法变形。此外，a 在这些受试者中出现了独特的表现模式：他们 能够评估某些结构，但不能评估其他结构。没有这样的模式 发现在正常的表现中。 指导这项研究的假设是，这种模式 揭示了某些完整的语句处理机制的局限性，其 函数似乎涉及成分结构的检索，但 很少或者什么都没有。调查将集中在进一步的分析上 这种句型，以及句法之间惊人的差异 判断任务在这些无语法受试者中所显示的能力 而同样的受试者显然无法利用 为了理解的目的而具有这种能力。 这些问题是通过语法性的进一步发展来探讨的 判断范式；对这项任务执行模式的探索 在其他失语症人群中，特别关注 出现的模式是否是语法错误所特有的；接近 追踪句子理解和判断之间的关系 关于语法性；跨语言研究，以确定语法是否 说其他语言的人表现出与 说英语的失语症受试者；探索这种可能性 任务可能能够非常准确地绘制出从 失语症；韵律信息在失语症中的作用的检查 语法性判断范式；最后，关于语法判断范式的一系列研究 法线，这可能提供关于图案来源的关键证据 以及无语法理解缺陷的性质。看起来是什么 在这方面特别有希望的是尝试在实验中 在正常受试者中通过嵌入 双重任务范式下的语法判断测验。

The general aim of this study is to clarify the sentence-processing deficit in agrammatic Broca's aphasics, and thereby to contribute to an understanding of sentence-processing mechanisms more generally. The starting point for this research is a recent finding that despite their 'asyntactic' language comprenhension, a number of agrammatic Broca's aphasics were able to accurately judge grammaticality of English sentences embodying a wide range of syntactic deformations. Furthermore, a distinctive pattern of performance emerged among these subjects: they were able to assess certain constructions but not others. No such pattern was found in the performance of normals. The hypothesis that guides the proposed research is that this pattern reveals the limits of certain intact sentence processing mechanisms whose function appears to involve the retrieval of constituent structure but little or nothing else. The investigation will focus on further analysis of this pattern, and on the surprising disparity between the syntactic abilities that judgment tasks have revealed in these agrammatic subjects and the apparent inability on the part of these same subjects to make use of such abilities for the purposes of comprehension. These issues are explored through further development of the grammaticality judgment paradigm; exploration of the pattern of performance on this task within other aphasic populations, with particular concern for the issue of whether the pattern that has emerged is unique to agrammatism; close tracking of the relationship between sentence comprehension and judgments of grammaticality; cross-linguistic studies to determine whether agrammatic speakers of other languages demonstrate the same pattern observed in the English-speaking aphasic subjects; exploration of the possibility that the task may be able to chart quite accurately the course of recovery from aphasia; examination of the role of prosodic information in the grammaticality judgment paradigm; and, finally, a series of studies on normals which may provide crucial evidence about the source of the pattern and the nature of the agrammatic comprehension deficit. What seems particularly promising in this regard is the attempt to experimentally elicit the agrammatic pattern in normal subjects by embedding the grammaticality judgment test in a dual task paradigm.