当前位置: X-MOL 学术Cortex › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Commonalities in alpha and beta neural desynchronizations during prediction in language comprehension and production
Cortex ( IF 3.6 ) Pub Date : 2020-10-13 , DOI: 10.1016/j.cortex.2020.09.026
Simone Gastaldon 1 , Giorgio Arcara 2 , Eduardo Navarrete 1 , Francesca Peressotti 1
Affiliation  

The present study investigates whether predictions during language comprehension are generated by engaging the language production system. Previous studies investigating either prediction or production highlighted M/EEG desynchronization (power decrease) in the alpha (8–10 Hz) and beta (13–30 Hz) frequency bands preceding the target. However, it is unclear whether this electrophysiological modulation underlies common mechanisms. We recorded EEG from participants performing both a comprehension and a production task in two separate blocks. Participants listened to high and low constraint incomplete sentences and were asked either to name a picture to complete them (production) or to simply listen to the final word (comprehension). We found that in a silent gap before the final stimulus, predictable stimuli elicited alpha and beta desynchronization in both tasks, signaling the pre-activation of linguistic information. Source estimation highlighted the involvement of left-lateralized language areas and temporo-parietal areas in the right hemisphere. Furthermore, correlations between the desynchronizations in comprehension and production showed spatiotemporal commonalities in language-relevant areas of the left hemisphere. As proposed by prediction-by-production models, our results suggest that comprehenders engage the production system while predicting upcoming words.



中文翻译:

语言理解和生产中的预测过程中,α和β神经去同步的共性

本研究调查语言理解过程中的预测是否通过参与语言产生系统而产生。先前对预测或生产进行调查的研究都强调了在目标之前的alpha(8-10 Hz)和beta(13-30 Hz)频带中的M / EEG不同步(功率降低)。然而,尚不清楚这种电生理调节是否是共同机制的基础。我们记录了参与者在两个单独的区域中同时执行理解和生产任务的脑电图。参与者听了高低约束的不完整句子,并被要求命名一张图片以完成它们(制作)或简单地听最后一个单词(理解)。我们发现,在最终刺激措施之前,有一段沉默的间隙,可预测的刺激在两个任务中引起了alpha和beta失步,这预示了语言信息的预激活。资料来源估计突出了右半球的左偏语言区域和颞顶区域的参与。此外,理解和生产中的失步之间的相关性在左半球的语言相关区域显示出时空共性。正如按产品预测模型所提出的,我们的结果表明,理解者在预测即将到来的单词的同时参与了生产系统。理解和生产中的失步之间的相关性显示出左半球语言相关区域的时空共性。正如按产品预测模型所提出的,我们的结果表明,理解者在预测即将到来的单词的同时参与了生产系统。理解和生产中的失步之间的相关性显示出左半球语言相关区域的时空共性。正如按产品预测模型所提出的,我们的结果表明,理解者在预测即将到来的单词的同时参与了生产系统。

更新日期:2020-11-09
down
wechat
bug