Haarmann H J, Kolk H H
Nijmegen Institute for Cognition and Information, University of Nijmegen, The Netherlands.
Brain Lang. 1994 May;46(4):493-516. doi: 10.1006/brln.1994.1028.
This study examined on-line sensitivity to subject-verb agreement violations in patients with Broca's aphasia and age-matched controls using a word monitoring paradigm. The agreement violations were couched in either simple or complex syntactic frames. In a first experiment, these syntactic frames were immediately followed by the noun phrase containing the target, whereas in the second experiment a 750-msec separation was introduced. The main finding of the first experiment was that patients with Broca's aphasia showed an agreement effect only for simple (i.e., conjoined) sentences but not for complex (i.e., embedded) ones, while controls showed the expected agreement effect for both. The results of the second experiment demonstrated further that the 750-msec delay in target presentation abolished the agreement effect in Broca's aphasics but not in normal controls. The findings are interpreted to suggest that Broca's suffer from a pathological limitation in parsing capacity, giving rise to a faster than normal decay of syntactic information.
本研究采用单词监测范式，考察了布罗卡失语症患者及年龄匹配的对照组对主谓一致违反情况的在线敏感性。一致违反情况以简单或复杂的句法框架呈现。在第一个实验中，这些句法框架之后紧接着包含目标词的名词短语，而在第二个实验中则引入了750毫秒的间隔。第一个实验的主要发现是，布罗卡失语症患者仅在简单（即并列）句子中表现出一致效应，而在复杂（即嵌套）句子中则没有，而对照组在两种句子中均表现出预期的一致效应。第二个实验的结果进一步表明，目标呈现延迟750毫秒消除了布罗卡失语症患者的一致效应，但正常对照组则没有。这些发现被解释为表明布罗卡失语症患者在句法分析能力上存在病理性限制，导致句法信息的衰减速度比正常情况更快。
