Frontiers in Human Neuroscience
Frontiers in Human Neuroscience
5 years ago

Characterizing Neural Entrainment to Hierarchical Linguistic Units using Electroencephalography (EEG).

Yu Wang, Aotian Yang, Nai Ding, Lucia Melloni, Wen Zhang, David Poeppel
To understand speech, listeners have to combine the words they hear into phrases and sentences. Recent magnetoencephalography (MEG) and electrocorticography (ECoG) studies show that cortical activity is concurrently entrained/synchronized to the rhythms of multiple levels of linguistic units including words, phrases, and sentences. Here we investigate whether this phenomenon can be observed using electroencephalography (EEG), a technique that is more widely available than MEG and ECoG. We show that the EEG responses concurrently track the rhythms of hierarchical linguistic units such as syllables/words, phrases, and sentences. The strength of the sentential-rate response correlates with how well each subject can detect random words embedded in a sequence of sentences. In contrast, only a syllabic-rate response is observed for an unintelligible control stimulus. In sum, EEG provides a useful tool to characterize neural encoding of hierarchical linguistic units, potentially even in individual participants.

Publisher URL: http://doi.org/10.3389/fnhum.2017.00481

DOI: 10.3389/fnhum.2017.00481

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