Time-course of phonetic (motor speech) encoding in utterance production

Cogn Neuropsychol. 2023 Nov 9:1-11. doi: 10.1080/02643294.2023.2279739. Online ahead of print.ABSTRACTSpeaking involves the preparation of the linguistic content of an utterance and of the motor programs leading to articulation. The temporal dynamics of linguistic versus motor-speech (phonetic) encoding is highly debated: phonetic encoding has been associated either to the last quarter of an utterance preparation time (∼150ms before articulation), or to virtually the entire planning time, simultaneously with linguistic encoding. We (i) review the evidence on the time-course of motor-speech encoding based on EEG/MEG event-related (ERP) studies and (ii) strive to replicate the early effects of phonological-phonetic factors in referential word production by reanalysing a large EEG/ERP dataset. The review indicates that motor-speech encoding is engaged during at least the last 300ms preceding articulation (about half of a word planning lag). By contrast, the very early involvement of phonological-phonetic factors could be replicated only partially and is not as robust as in the second half of the utterance planning time-window.PMID:37944062 | DOI:10.1080/02643294.2023.2279739

Source: Cognitive Neuropsychology - November 9, 2023 Category: Psychiatry & Psychology Authors: Marina Laganaro Source Type: research