SHORT TERM MEMORY AND SYNTACTIC DEFICITS IN APHASIA

失语症的短期记忆和句法缺陷

• 批准号: 6379213
• 负责人: Randi C Martin
• 金额: $ 16.09万
• 依托单位: RICE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-01 至 2002-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6379213
• 关键词: aphasia; behavioral /social science research tag; comprehension; human subject; learning; neural information processing; neuropsychological tests; neuropsychology; semantics; short term memory; speech; vocabulary

DESCRIPTION: (Adapted From The Applicant's Abstract.) The intent of the proposed research is to relate aphasic patients' reduced memory spans to single word processing, to sentence comprehension and production, and to long-term learning. A basic assumption of this research is that there are separable phonological and lexical- semantic contributions to memory span that may be independently disrupted in different patients.Patients' performance on word perception, lexical comprehension and word production will be evaluated to determine the extent to which there is a correspondence or dissociation between phonological and semantic abilities in word processing and phonological and semantic retention capacities. One issue to be addressed is whether there are separable input and output phonological STM capacities that relate to patients' speech perception and production abilities. At the level of sentence processing, the proposed research will investigate whether the lexical-semantic retention capacity that appears to be involved in sentence comprehension also plays an important role in speech production. Although phonological STM does not appear to be critical to sentence comprehension, it is possible that this capacity is involved in speech planning at the phonological level. With regard to long-term learning, the proposed studies will investigate whether deficits in the short-term retention at the phonological and lexical-semantic levels lead to impaired long-term learning deficits for phonological and lexical-semantic information. A modified case study approach will be used, in that a relatively small number of patients will be tested on a large number of tasks. The advantage of the case study approach is that dissociations that might be present in a few cases (e.g., good syntactic comprehension together with reduced memory span) might be masked in group data. The approach differs from typical case studies, however, in that a number of patients will be tested on the same tasks. In this fashion it should be possible to determine whether deficits that appear to be associated in some cases are necessarily associated in all cases.

产品说明： （摘自申请人摘要） 意图 这项研究的目的是将失语症患者的 记忆广度到单个单词的处理，到句子的理解 和生产，以及长期的学习。一个基本假设是 这一研究是，有可分离的语音和词汇- 语义对记忆广度的贡献可能独立于 在不同的病人中被打乱。病人在单词上的表现 知觉、词汇理解和词汇产出将被评估 以确定在何种程度上存在对应关系，或 之间的分离 音韵和 语义能力 在 词 处理和语音和语义保持能力。 需要解决的一个问题是是否存在可分离的输入和 输出与患者言语相关的语音短时记忆能力 感知和生产能力。在判刑方面 处理，拟议的研究将调查是否 词汇语义保持能力似乎与 句子理解在演讲中也起着重要的作用 生产虽然语音STM似乎并不重要， 句子理解，这种能力可能是 参与语音层面的言语规划。关于 长期学习，拟议的研究将调查 是否在语音的短期保留缺陷， 词汇语义水平导致长期学习受损 语音和词汇语义信息的缺陷。 将采用一种经过修改的案例研究方法， 将对大量患者进行大量任务测试。 的 案例研究方法的优点是， 存在于少数情况下（例如，良好的句法理解能力 具有减小的存储器跨度）可能被屏蔽在组数据中。 的 然而，这种方法与典型的案例研究不同， 将在相同的任务中测试患者数量。以这种方式 应该可以确定， 在某些情况下相关联，在所有情况下都必然相关联。