The Arcuate Fasciculus and language origins: Disentangling existing conceptions that influence evolutionary accounts - Laboratoire de psychologie cognitive Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2021

The Arcuate Fasciculus and language origins: Disentangling existing conceptions that influence evolutionary accounts

Résumé

The Arcuate Fasciculus (AF) is of considerable interdisciplinary interest, because of its major implication in language processing. Theories about language brain evolution are based on anatomical differences in the AF across primates. However, changing methodologies and nomenclatures have resulted in conflicting findings regarding interspecies AF differences: Historical knowledge about the AF originated from human blunt dissections and later from monkey tract-tracing studies. Contemporary tractography studies reinvestigate the fasciculus’ morphology, but remain heavily bound to unclear anatomical priors and methodological limitations. First, we aim to disentangle the influences of these three epistemological steps on existing AF conceptions, and to propose a contemporary model to guide future work. Second, considering the influence of various AF conceptions, we discuss four key evolutionary changes that propagated current views about language evolution: 1) frontal terminations, 2) temporal terminations, 3) greater Dorsal- versus Ventral Pathway expansion, 4) lateralisation. We conclude that new data point towards a more shared AF anatomy across primates than previously described. Language evolution theories should incorporate this continuous AF evolution across primates.
Fichier principal
Vignette du fichier
preprint_v3_Becker_AF_in_evolution (1).pdf (872.11 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03255234 , version 1 (09-06-2021)
hal-03255234 , version 2 (29-10-2021)
hal-03255234 , version 3 (30-11-2021)

Identifiants

  • HAL Id : hal-03255234 , version 3

Citer

Yannick R Becker, Kep Kee Loh, Olivier Coulon, Adrien Meguerditchian. The Arcuate Fasciculus and language origins: Disentangling existing conceptions that influence evolutionary accounts. 2021. ⟨hal-03255234v3⟩
453 Consultations
653 Téléchargements

Partager

Gmail Facebook X LinkedIn More