Marshall J, Pring T, Chiat S
Department of Clinical Communication Studies, City University, London, United Kingdom.
Brain Lang. 1998 Jun 15;63(2):159-83. doi: 10.1006/brln.1998.1949.
This paper presents a subject with a selective verb retrieval deficit. Nouns were produced more successfully than verbs in spontaneous speech, picture naming and when naming to definition. The word class effect was not observed in comprehension tasks, reading aloud or writing. This indicated that it was due to a specific problem in accessing verbs' phonological representations from semantics. The second part of the paper explores the implications of the verb deficit for sentence production. Analyses of narrative speech revealed a typically agrammatic profile, with minimal verb argument structure and few function words and inflections. Two investigations suggested that the sentence deficit was at least partly contingent upon the verb deficit. In the first, the subject was asked to produce a sentence with the aid of a provided noun or verb. The noun cues were not effective in eliciting sentences, whereas verb cues were. The second investigation explored the effects of therapy aiming to improve verb retrieval. This therapy resulted in better verb retrieval and improved sentence production with those verbs. These findings suggest that an inability to access verbs' phonological representations can severely impair sentence formulation. Implications for models of sentence production are considered.
本文介绍了一位患有选择性动词检索缺陷的受试者。在自发言语、图片命名以及根据定义命名时，名词的产出比动词更成功。在理解任务、朗读或写作中未观察到词类效应。这表明这是由于从语义中获取动词语音表征存在特定问题所致。本文的第二部分探讨了动词缺陷对句子产出的影响。对叙述性言语的分析显示出典型的语法缺失特征，动词论元结构最少，功能词和词形变化很少。两项研究表明，句子缺陷至少部分取决于动词缺陷。在第一项研究中，要求受试者借助提供的名词或动词来生成一个句子。名词线索在引出句子方面无效，而动词线索则有效。第二项研究探讨了旨在改善动词检索的治疗效果。这种治疗导致动词检索能力提高，并改善了使用这些动词的句子产出。这些发现表明，无法获取动词的语音表征会严重损害句子的构成。文中还考虑了对句子产出模型的影响。
