Waters G S, Caplan D
School of Communication Sciences and Disorders, McGill University, Montreal, Quebec, Canada.
J Psycholinguist Res. 1997 Jul;26(4):377-400. doi: 10.1023/a:1025073902269.
We examined the ability of patients with dementia of the Alzheimer's type (DAT) and normal controls to perform a sentence acceptability judgment task that required determining the referent for a reflexive pronoun. Performance on three different sentence types that differed in terms of syntactic complexity was assessed. Subjects performed the task alone and under two different dual-task conditions which required continuous, externally paced responses. DAT patients were more affected than controls by the dual-task conditions, but were not disproportionately impaired on the more complex sentence types. The failure of DAT patients to be disproportionately affected on the most complex sentence types in the dual-task conditions provides evidence for the separation of the processing resources that are used in sentence comprehension from those involved in other tasks.
我们研究了阿尔茨海默病型痴呆（DAT）患者和正常对照执行句子可接受性判断任务的能力，该任务要求确定反身代词的指代对象。评估了三种句法复杂度不同的句子类型的表现。受试者单独完成任务，并在两种不同的双重任务条件下进行，这两种条件需要持续的、外部节奏的反应。在双重任务条件下，DAT患者比对照组受影响更大，但在更复杂的句子类型上并未受到不成比例的损害。DAT患者在双重任务条件下在最复杂的句子类型上未受到不成比例的影响，这为句子理解中使用的处理资源与其他任务中涉及的资源相分离提供了证据。
