Gurd J M, Oliveira R M
University Department of Clinical Neurology, Radcliffe Infirmary, Oxford, U.K.
Brain Lang. 1996 Sep;54(3):414-33. doi: 10.1006/brln.1996.0083.
A modified Neisser word-search (search II) was administered to patients with Parkinson's disease (PD), and significant deficits were found. Given the assumption that the processes are lexical, we interpret the results as support for the claim that there is competition between semantically related words in speech production (Wheeldon, 1989). A related verbal task-switching experiment (continuous series II) is also presented. Although PDs are impaired on task switching, there are double dissociations between verbal task switching (continuous series II) and lexical retrieval (search II). The relationship between performance on these tasks and on verbal fluency is also addressed.
对帕金森病（PD）患者进行了改良的奈塞尔文字搜索测试（搜索II），结果发现了显著缺陷。鉴于假设这些过程是词汇性的，我们将结果解释为支持言语产生中语义相关词之间存在竞争这一观点（惠尔登，1989）。还展示了一个相关的言语任务转换实验（连续系列II）。尽管帕金森病患者在任务转换方面存在障碍，但言语任务转换（连续系列II）和词汇检索（搜索II）之间存在双重分离。还探讨了这些任务的表现与言语流畅性之间的关系。
