ELECTROPHYSIOLOGY OF LINGUISTIC PROCESSING

语言处理的电生理学

• 批准号: 3322364
• 负责人: MARTA KUTAS
• 金额: $ 11.95万
• 依托单位: UNIVERSITY OF CALIFORNIA, SAN DIEGO
• 依托单位国家: 美国
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-12-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3322364
• 关键词: cognition; electrical potential; electrophysiology; human subject; language; memory; multilingualism; neural information processing; semantics; stimulus /response; verbal behavior; young adult human (21-34)

Event-related potentials (ERPs) will be recorded from the scalp of normal human subjects in response to linguistic stimuli. The main focus will be upon studies of late negative ERP components elicited during language processing. In particular, an N400 component has been observed in response to words that are incongruent or unexpected in relation to a prior semantic context. Current evidence suggests that the N400 is a physiological index of the priming of the semantic representation of verbal stimuli. The proposed experiments are aimed at clarifying the nature of semantic information processing that is reflected in these late ERPs. The specific aim of the separate experiments are: (1-3) To ascertain whether the ERP correlates of semantic priming are signs of automatic and/or attentional processing; (4) To examine the ERPs to strong syntactic violations; (5) To use ERPs to evaluate the timing of phonemic and semantic analyses of homophones; (6) To assess the obligatory and optional aspects of sematnic and phonemic priming processes; (7) To determine the extent to which the sematic processing reflected by the N400 is modality-independent by examining ERPs to anomalous information presented in the form of line drawings; (8) To compare the sematic processes utilized by bilinguals in their first and second languages; (9) To use lexical decision latencies and ERPs in concert to determine whether all meanings of an ambiguous word are accessed and to measure the time course of their activations; (10) To test our hypothesis of the respective roles of semantic priming and elaboration in cued recall; (11) To compare the processing of completely nonsensical anomalies and literal anomalies with a metaphorical interpretation. This research project will identify and refine electrophysiological measures of important cognitive functions related to language comprehension and memory organization in normal, young adult subjects. This normative data base should be of value for the future evaluation and analysis of disorders of reading, language understanding and learning.

事件相关电位（ERP）将从正常的头皮记录 人类受试者响应语言刺激。 主要重点是 在研究后期负面ERP组件的研究中引起的语言成分 加工。 特别是，已经观察到N400组件的响应 与先前语义有关的单词不一致或意外 语境。 当前的证据表明N400是生理指数 言语刺激语义表示的启动。 提出的实验旨在阐明语义的性质 这些后期ERP反映的信息处理。 具体 单独实验的目的是：（1-3）确定ERP是否是否 语义启动的关联是自动和/或注意力的迹象 加工; （4）检查ERP是否应对强烈的句法违规； （5）到 使用ERP评估语音和语义分析的时间和语义分析的时间 词形； （6）评估半贴的强制性和可选方面 和音素启动过程； （7）确定 N400反射的语义处理是与模态无关的 检查ERP以线的形式介绍的异常信息 图纸； （8）比较双语中使用的语义过程 他们的第一和第二语言； （9）使用词汇决策延迟和 ERP共同确定歧义单词的所有含义是否是 访问并测量激活的时间过程； （10）测试 我们对语义启动和阐述的各自作用的假设 在提示召回中； （11）比较完全荒谬的处理 具有隐喻解释的异常和字面异常。 该研究项目将识别和完善电生理学 与语言理解有关的重要认知功能的度量 和正常成年受试者的记忆组织。 这个规范 数据库对于未来评估和分析应该具有价值 阅读，语言理解和学习的障碍。