Berndt R S, Mitchum C C, Wayland S
Department of Neurology, University of Maryland School of Medicine, Baltimore, Maryland 21201-1595, USA.
Brain Lang. 1997 Nov 15;60(2):197-221. doi: 10.1006/brln.1997.1799.
Three hypotheses concerning the functional source of aphasic patients' difficulty comprehending semantically reversible sentences were tested using declarative sentences in active and passive voice and sentences with center-embedded relative clauses. Each of the three hypotheses is predicated on relative patterns of impairment and sparing of patient performance on these (and other) sentence types, yet the three hypotheses make somewhat different predictions about performance patterns across these types. Results from 5 Broca's aphasic patients were not consistent with the predictions of the linguistically motivated Trace Deletion Hypothesis or of a hypothesis based on an impairment involving grammatical morphemes. The hypothesis that aphasic comprehension impairments reflect a general limitation of working memory capacity was given partial support by the ordinal pattern of difficulty for a mixed group of 10 patients, but failed to account for patterns obtained from individual patients. Results are interpreted as having relevance for methodological as well as theoretical aspects of research on aphasic sentence comprehension.
运用主动语态和被动语态的陈述句以及带有中心嵌入关系从句的句子，对关于失语症患者理解语义可逆句困难的功能来源的三种假设进行了测试。这三种假设中的每一种都基于患者在这些（以及其他）句子类型上表现出的损伤和保留的相对模式，然而这三种假设对这些类型句子的表现模式做出了略有不同的预测。5名布罗卡失语症患者的结果与基于语言学的痕迹删除假设或基于涉及语法语素损伤的假设的预测不一致。失语症理解障碍反映工作记忆容量的一般限制这一假设，在10名患者的混合组中，其难度顺序模式得到了部分支持，但未能解释从个体患者获得的模式。结果被解释为与失语症句子理解研究的方法学以及理论方面都相关。
