人类大脑不仅能够快速地感知和理解外部输入的言语信号,还能够主动自发地构建内部言语表征,例如,在日常生活中,人们可以在不发声的情况下想象自己说话或唱歌。这种高级认知功能背后的神经机制尚不清晰。围绕这一研究问题,本报告将介绍结合高时间分辨率的脑电/磁图技术及频率标记范式所开展的系列研究,系统地探讨言语感知与言语想象加工中,不同层级语言结构及韵律结构的神经表征。研究结果为揭示大脑在感知和想象言语过程中的认知神经机制提供了重要线索,拓展对语言处理背后神经基础的认识。
The human brain is not only capable of rapidly perceiving and comprehending external speech signals but also actively constructs internal speech representations. For instance, individuals can imagine themselves speaking or singing without producing any sound in daily life. The neural mechanisms underlying this advanced cognitive function remain unclear. To address this research question, this talk will present a series of studies utilizing high-temporal-resolution M/EEG techniques combined with a frequency-tagging paradigm to systematically investigate the neural representations of different linguistic and rhythmic structures during speech perception and imagination. The findings provide valuable insights into the cognitive neural mechanisms underlying the brain’s processing of perceived and imagined speech, expanding our understanding of the neural basis of language processing.