LEXICAL SEGMENTATION AND ACCESS IN APHASIA

描述(改编自《调查者摘要》)：长期目标 这个项目的目的是检查失语症中的词汇切分，并使用 由此产生的数据有助于理解人类如何完成困难的任务 识别连接语音中的单个单词的任务。战略 这项研究背后的目的是识别患有特定功能障碍的患者 语言处理的目标方面，包括词汇访问，以及 假设声学-语音词边界线索的辨别和检验 他们如何解释称为名词的语音序列，其中的位置 不同的词边界导致识别不同的词(例如， 绑架/孩子打盹)。它将解决四个问题：(1)词汇是否 分词是离散过程的结果，或者是词法的副产品 通达，(2)词首的声学形式如何影响词汇 切分，(3)切分的时间进程是什么，以及 (4)词汇通达和/或词间竞争的调节因素是什么 分段。这些问题将通过一系列的离线 辨别任务和在线范式，包括跨模式词汇 启动和单词监控，提供失语症和 不受影响的听者对名词的解释。这项研究将提供 词汇通达和切分的个体研究和群体研究 他们的损害。目前还没有公开发表的研究来检验 失语症中的词汇切分。因为细分是核心之一 连通语音处理中的语音识别问题 这项工作解决了我们对失语症干扰理解上的一个关键差距 口语理解能力。除了描述自然界的特征 对于失语症的分割过程，这项工作将提供一个新的来源 汇聚证据以理解口语的组织 正常听者的识别过程。预计将会有 所获得的理解最终将对临床医生、治疗师和 理论家。

DESCRIPTION (Adapted from the Investigator's Abstract): The long-term goal of this project is to examine lexical segmentation in aphasia, and to use the resulting data to help understand how humans accomplish the difficult task of recognizing individual words in connected speech. The strategy behind the research is to identify patients with specific impairments in targeted aspects of language processing including lexical access, and the discrimination of putative acoustic-phonetic word boundary cues, and examine how they interpret speech sequences known as oronyms in which positing different word boundaries leads to recognizing different words (e.g., kidnap/kid nap). It will address four issues: (1) whether lexical segmentation is the results of a discrete process, or a byproduct of lexical access, (2) how the acoustic form of word onsets affects lexical segmentation, (3) what the timecourse of segmentation disambiguation is, and (4) what factors modulate interword competition in lexical access and/or segmentation. These issues will be examined through a series of offline discrimination tasks and online paradigms including cross-modal lexical priming and word monitoring that provide implicit measures of aphasic and unimpaired listeners' interpretation of oronyms. This research will provide both individual and group studies of lexical access and segmentation and their impairment. At present there are no published studies examining lexical segmentation in aphasia. As segmentation is one of the central problems of spoken word recognition in connected speech processing, this work addresses a critical gap in our understanding of aphasic disturbances of spoken language comprehension. In addition to characterizing the nature of segmentation processes in aphasia, this work will provide a new source of converging evidence to understand the organization of spoken word recognition processes in normal listeners. It is expected that the understanding gained will ultimately be useful to clinicians, therapists and theorists.