Matzke Mike, Mai Heinke, Nager Wido, Rüsseler Jascha, Münte Thomas
Department of Neurology II, University of Magdeburg, Magdeburg, Germany
Clin Neurophysiol. 2002 Jun;113(6):844-52. doi: 10.1016/s1388-2457(02)00059-7.
The present investigation explored the electrophysiological correlates of working memory during sentence comprehension.
Event-related brain potentials (ERP) were recorded from 29 channels in 22 subjects, while they read German sentences having subject-first (canonical) or object-first (non-canonical) word orders.
Three different ERP effects were observed: a negativity (maximum at Fc5) differentiating unambiguous object-first and subject-first sentences, interpreted as reflecting the demands of the object-first sentences on working memory; a second negativity (maximum at F7) to the subject noun-phrase in object-first sentences, interpreted as indicating retrieval of verbal material. Finally, a parietal positivity was found for ambiguous sentences that turned out to have a non-canonical word order, which was interpreted as indicating revision and reevaluation processes.
The present data underscore the different roles of working memory in comprehension.
本研究探讨了句子理解过程中工作记忆的电生理相关性。
在22名受试者阅读具有主语在前（规范）或宾语在前（非规范）词序的德语句子时，从29个通道记录事件相关脑电位（ERP）。
观察到三种不同的ERP效应：一种负性成分（在Fc5处最大）区分明确的宾语在前和主语在前的句子，被解释为反映宾语在前的句子对工作记忆的需求；第二种负性成分（在F7处最大）出现在宾语在前的句子中的主语名词短语处，被解释为表明对语言材料的检索。最后，发现对于结果证明具有非规范词序的歧义句子，顶叶出现正性成分，这被解释为表明修正和重新评估过程。
目前的数据强调了工作记忆在理解中的不同作用。
