The Brain Differentially Prepares Inner and Overt Speech Production: Electrophysiological and Vascular Evidence.

ABSTRACT: Speech production not only relies on spoken (overt speech) but also on silent output (inner speech). Little is known about whether inner and overt speech are processed differently and which neural mechanisms are involved. By simultaneously applying electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS), we tried to disentangle executive control from motor and linguistic processes. A preparation phase was introduced additionally to the examination of overt and inner speech directly during naming (i.e., speech execution). Participants completed a picture-naming paradigm in which the pure preparation phase of a subsequent speech production and the actual speech execution phase could be differentiated. fNIRS results revealed a larger activation for overt rather than inn

SUBMITTER: Stephan F 

PROVIDER: S-EPMC7139369 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature