Effect of Verb Network Strengthening Treatment (VNeST) on lexical retrieval of content words in sentences in persons with aphasia
Effect of Verb Network Strengthening Treatment (VNeST) on lexical retrieval of content words in sentences in persons with aphasia
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DOI：
10.1080/02687030802291339
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发表时间：
2009-01-01
期刊：
影响因子：
2
通讯作者：
Kiran, Swathi
中科院分区：
文献类型：
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作者：
Edmonds, Lisa A.;Nadeau, Stephen E.;Kiran, Swathi
背景：动词网络强化治疗(VNeST)是一种语义治疗，旨在通过促进动词(例如，测量)及其主题角色的系统检索，改善句子上下文中的内容词的词汇检索，即施事(动作的实施者，例如木匠、厨师)和患者(动作的接受者，例如木材、糖)。VNeST受到Loverso和他的同事(如Loverso，Selinger，Prescott，1979)和McRae及同事的影响，他们使用动词作为核心处理来改进句子产生，并取得了令人鼓舞的结果；McRae和他的同事表明，动词启动典型的主体(如祈祷修女)和病人(逮捕-罪犯)(Ferretti，McRae，Hatherell，2001)，反之亦然(McRae，Hare，Elman，Ferretti，2005)。目的：本研究有四个具体问题。使用VNeST训练一组动词是否概括为产生(1)对新图片刺激作出反应的代理人(木匠)、经过训练的动词(措施)和病人(楼梯)的能力；(2)对新图片刺激作出反应的代理人(护士)、未经训练的语义相关动词(重量)和病人(婴儿)的能力？(3)概括效果是否保持？(4)在单字命名、图片描述和相关言语任务中，VNeST是否概括为提取与治疗项目没有直接关系的名词和动词的能力？方法：4例失语症患者参加实验。参与者每周接受两次VNeST，涉及检索与训练动词(例如，测量)相关的代理-患者对(例如，厨师/糖、测量员/土地)。采用单受试者、重复探针法、多基线实验设计。每周测试一次包含训练过的动词和未训练过的语义相关动词的句子产生的概括性。结果结果：实验结果表明，受试者对受训和未受训动词的句子中的实词进行词汇提取的概括性。此外，在不同任务中观察到处理前到处理后对句子中单个动词和名词命名以及词汇提取的概括性。四个参与者中有三个观察到了对连接语音的概括。结论：虽然这些结果是初步的，但这些结果表明，在中度失语症患者中，VNeST可能有效地促进从单一单词命名到连接语言的泛化。讨论了与治疗效率相关的一些临床意义。
Background: Verb Network Strengthening Treatment (VNeST) is a semantic treatment that aims to improve lexical retrieval of content words in sentence context by promoting systematic retrieval of verbs (e.g., measure) and their thematic rolesi.e., agent (doer of the action, e.g., carpenter, chef) and patient (receiver of the action, e.g., lumber, sugar). VNeST is influenced by Loverso and colleagues (e.g., Loverso, Selinger, Prescott, 1979) who used verb as core treatment to improve sentence production with encouraging results, and McRae and colleagues who showed that verbs prime typical agents (e.g., pray-nun) and patients (arrest-criminal) (Ferretti, McRae, Hatherell, 2001) and vice-versa (McRae, Hare, Elman, Ferretti, 2005). Aims: There are four specific questions in this study. Does training a set of verbs using VNeST generalise to the ability to produce (1) an agent (carpenter), trained verb (measure), and patient (stairs) in response to novel picture stimuli and (2) an agent (nurse), untrained semantically related verb (weigh), and patient (baby) in response to novel picture stimuli? (3) Are generalisation effects maintained? (4) Does VNeST generalise to the ability to retrieve nouns and verbs not directly related to treatment items in single word naming, picture description, and connected speech tasks? Methods Procedures: Four participants with aphasia participated. Participants received VNeST, which involves retrieval of agent-patient pairs (e.g., chef/sugar, surveyor/land) related to trained verbs (e.g., measure), twice per week. A single-participant, repeated probe, multiple baseline experimental design was used. Generalisation to sentence production for sentences containing trained verbs and untrained semantically related verbs was tested weekly. Outcomes Results: Results demonstrated generalisation to lexical retrieval of content words in sentences with trained and untrained verbs across participants. Additionally, pre- to post-treatment generalisation was observed on single verb and noun naming and lexical retrieval in sentences across a variety of tasks across participants. Generalisation to connected speech was observed for three of four participants. Conclusions: Although preliminary, these results indicate that VNeST may be effective in promoting generalisation from single word naming to connected speech in persons with moderate aphasia. A number of clinical implications related to treatment efficiency are discussed.