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An ERP study of hemispheric differences in perceptual representations of language reveals meaning attribution in the right hemisphere and constituents of the N400-effect
Brain and Language ( IF 2.1 ) Pub Date : 2021-06-01 , DOI: 10.1016/j.bandl.2021.104963
Alie G Male 1 , Chloe A Smith 2 , Bethanie Gouldthorp 3
Affiliation  

Recent findings have revealed that the right hemisphere (RH) is uniquely involved in integrating perceptual information from linguistic input to simulate a mental model of that input. We extend on these findings by testing whether meaning is generated from such models. Participants (N = 37) heard auditory passages describing the visuospatial arrangement of elements into a perceptual representation of a familiar object, then judged whether a laterally-presented target word matched the object. We found a central N400-effect for left visual-field targets, suggesting that meaning was also accessible to the RH. There was no statistical difference for right visual-field targets. Principle component analysis of the data revealed that the N400-effect was driven by positive components. Consequently, the results suggest that i) RH contributions to language comprehension include integrative and perceptual processes that enable overall meaning to be generated from representations of discourse, and ii) positive ERP components may produce N400-effects.



中文翻译:

一项关于语言感知表征半球差异的 ERP 研究揭示了右半球的意义归属和 N400 效应的成分

最近的研究结果表明,右半球 (RH) 独特地参与了整合来自语言输入的感知信息以模拟该输入的心理模型。我们通过测试这些模型是否产生意义来扩展这些发现。参与者 (N = 37) 听到将元素的视觉空间排列描述为熟悉对象的感知表示的听觉段落,然后判断横向呈现的目标词是否与对象匹配。我们发现左视野目标的中央 N400 效应,表明 RH 也可以理解这种意义。右视野目标没有统计学差异。数据的主成分分析表明,N400 效应是由正成分驱动的。最后,

更新日期:2021-06-01
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