Beyond Broca: neural architecture and evolution of a dual motor speech coordination system.
Brain
; 146(5): 1775-1790, 2023 05 02.
Article
in En
| MEDLINE
| ID: mdl-36746488
ABSTRACT
Classical neural architecture models of speech production propose a single system centred on Broca's area coordinating all the vocal articulators from lips to larynx. Modern evidence has challenged both the idea that Broca's area is involved in motor speech coordination and that there is only one coordination network. Drawing on a wide range of evidence, here we propose a dual speech coordination model in which laryngeal control of pitch-related aspects of prosody and song are coordinated by a hierarchically organized dorsolateral system while supralaryngeal articulation at the phonetic/syllabic level is coordinated by a more ventral system posterior to Broca's area. We argue further that these two speech production subsystems have distinguishable evolutionary histories and discuss the implications for models of language evolution.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Speech
/
Voice
Type of study:
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Brain
Year:
2023
Document type:
Article
Affiliation country:
Estados Unidos