Investigation of parameters of implicit priming in anomia

描述(申请人提供)：当前的口语产生模型假设语言系统由词汇和语义节点组成的网络组成，作为语言处理的一部分，该网络自动地将激活彼此传播。这种激活的自动传播是隐含的，因为它发生在有意识的意识或控制之外。完整的内隐加工被认为是典型成年人自动、流利、快速使用语言的基础。内隐加工也是学习的一个组成部分，因此也是任何语言康复的组成部分，可以用来纠正中风(即失语症)后的语言缺陷。以前的研究提出了失语症患者语言系统的自动激活是保留还是受损的问题。如果失语症患者在自动激活的传播方面存在缺陷，这可能是他们语言障碍的基础，和/或可能影响他们对治疗的反应。这里提出的研究将以启动的形式在失调症患者中调查内隐学习的性质，失调症是失语症的一种普遍症状。使用掩蔽启动图片命名范式，它将使用准确性和反应时数据来比较无名成年人和典型成年人的外显意识阈值，并将比较无名成年人和典型成年人在三个主要目标潜伏期对内隐和外显身份启动的反应。这项研究的发现将有助于我们理解失语症中的内隐、自动激活过程，因为它们与语言使用模式和失语症康复中的学习方法有关。

DESCRIPTION (provided by applicant): Current models of spoken language production postulate that the linguistic system is composed of a network of lexical and semantic nodes that automatically spread activation to each other as part of linguistic processing. This automatic spread of activation is implicit, in that it occurs outside of conscious awareness or control. Intact implicit processing is thought to underlie the automatic, fluent, rapid use of language in typical adults. Implicit processing is also a component of learning and, therefore, a component of any language rehabilitation that may be undertaken to remediate language deficits following stroke (i.e., aphasia). Previous research has raised the question of whether automatic activation of the linguistic system is preserved or impaired in aphasia. If there is a deficit in the spread of automatic activation in individuals with aphasia, this may underlie their language deficits, and/or may influence their response to treatment. The studies proposed here will investigate the nature of implicit learning, in the form of priming, in individuals with anomia, a ubiquitous symptom of aphasia. Using a masked priming picture naming paradigm, it will use accuracy and reaction time data to compare thresholds of explicit awareness in anomic and typical adults, and will compare the response of anomic and typical adults to implicit vs. explicit identity primes across three prime-target latencies. Findings from this research will inform our understanding of implicit, automatic activation processes in aphasia as they relate both to models of language use and to methods of learning in aphasia rehabilitation.