Inflectional Morphology in Fluent Aphasia: A Case Study in a Highly Inflected Language
Inflectional Morphology in Fluent Aphasia: A Case Study in a Highly Inflected Language
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DOI：
10.1177/0023830918765897
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发表时间：
2019-06-01
影响因子：
1.8
通讯作者：
Fossard, Marion
中科院分区：
文献类型：
--
作者：
Auclair-Ouellet, Noemie;Pythoud, Pauline;Fossard, Marion
屈折形态学困难通常见于伴有语法缺失的非流利性失语症，但越来越多的研究表明，它们也可能存在于流利性失语症中。在语法缺失中，形态学困难被认为是语音编码受损的结果，对规则动词的影响比对不规则动词的影响更大。然而，研究表明，屈折形态的困难涉及规则和不规则动词，他们的起源可能更多的概念/语义的性质。此外，研究报告说，与其他时态相比，过去时态的处理受到更明显的损害。本研究的目的是描述流利性失语症患者的屈折形态学受损的特征。RY，一位69岁的慢性流利性失语症患者，完成了一个简短的神经心理学和语言电池和三个实验任务的屈折形态。这些任务评估了根据时间信息选择正确的动词屈折形式的能力，访问包含在屈折词素中的时间信息的能力，以及产生具有时态屈折变化的动词的能力。他的表现与五名没有语言障碍的成年人进行了比较。结果表明，RY在选择动词的屈折变化形式、提取由屈折词素传递的时间信息以及产生屈折动词方面存在困难。他的困难影响了规则和不规则动词，以及现在时、过去时和将来时的动词。性能也显示了生产和理解的曲折形态的加工限制的影响。需要对流利性失语患者的屈折形态学进行更多的研究，以了解困难的来源。
Inflectional morphology difficulties are typically reported in non-fluent aphasia with agrammatism, but a growing number of studies show that they can also be present in fluent aphasia. In agrammatism, morphological difficulties are conceived as the consequence of impaired phonological encoding and would affect regular verbs more than irregular verbs. However, studies show that inflectional morphology difficulties concern both regular and irregular verbs, and that their origin could be more conceptual/semantic in nature. Additionally, studies report more pronounced impairments for the processing of the past tense compared to other tenses. The goal of this study was to characterize the impairment of inflectional morphology in fluent aphasia. RY, a 69-year-old man with chronic fluent aphasia completed a short neuropsychological and language battery and three experimental tasks of inflectional morphology. The tasks assessed the capacity to select the correct inflected form of a verb based on time information, to access the time information included in an inflectional morpheme, and to produce verbs with tense inflection. His performance was compared to a group of five adults without language impairments. Results showed that RY had difficulties selecting the correct inflected form of a verb, accessing time information transmitted by inflectional morphemes, and producing inflected verbs. His difficulties affected both regular and irregular verbs, and verbs in the present, past, and future tenses. The performance also shows the influence of processing limitations over the production and comprehension of inflectional morphology. More studies of inflectional morphology in fluent aphasia are needed to understand the origin of difficulties.