Different encoding of legal and illegal speech sequences: beyond phonetic planning?
Résumé
Transforming linguistic codes into articulated speech is thought to rely on different phonetic
(motor speech) encoding/planning processes for practiced sequences and for unpracticed/
uncommon speech sequences. However, transforming phonological codes into articulation
likely involves processes beyond phonetic planning, going on even during articulation. Here we
sought behavioural, acoustic and brain dynamics differences in the preparation of matched
common/legal and uncommon/illegal speech sequences in 20 participants. Illegal syllables were
initialised faster – contrary to what is generally expected -, had longer acoustic duration and
differed from legal syllables in ERP waveform amplitudes and microstates in a time-window
preceding and following the vocal onset. The pattern of results suggests that speech plans are
of different size for legal and illegal syllables, and impact on the parametrisation of the
corresponding motor programmes, allowing fast execution of the segmentalised illegal
sequences for which incremental speech programming continues during articulation
Fichier principal
Jouen-Fougeron-Laganaro-2023-Different encoding of legal and illegal speech sequences beyond phonetic planning.pdf (2.19 Mo)
Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte