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Evénement No. 1846
http://lpl-aix.fr/event/1846

Dynamics in sound structure planning

Type :

séminaire BLRI

Auteur :

Matt Goldrick

Affiliation :

Northwestern University (USA)

Lieu ou publication :

LPL, bât. B, salle des conférences B011, 5 avenue Pasteur, Aix-en-Provence

Pays :

France

Date (de début) :

9/5/2017

Date de fin :

Heure :

11h

URL:

Conditions d'accès :

entrée libre

 Organisateur(s) :

Labex BLRI / ILCB

 Partenaires :

 Email pour contact :

elin.runnqvist(arobase)lpl-aix.fr

Présentation :

Résumé :

Lexical neighbors (non-target words overlapping in form with the target) induce a range of effects on phonetic realization. When response preparation is difficult or disrupted, non-target representations serve to attract target articulations, resulting in productions that reduce the contrast between the target and co-activated neighbors.
When response preparation is facilitated, neighbors serve to repel the target, resulting in enhancement of contrasts between targets and neighbors.
Parallel effects have been observed in bilingual speech, as well as in non-communicative motor movements (saccadic eye movements and reaching). This suggest that enhancement and reduction reflect general principles of motor planning. A dynamical framework for lexical access can account for this diverse array of effects. Reduction is the consequence of coactivation.
Spreading activation enhances the activation of neighbors, causing the output of lexical access to be a blend of target and non-target properties. The resulting presence of neighbor articulatory properties during target production produces reduction.
Building on exemplar accounts and adaptive speaker models, enhancement reflects learned inhibition of competing neighbor forms. This interacts with general selection processes to produce strong suppression of non-target forms, greatly reducing lingering effects of coactivation. This produces enhancement relative to cases that lack learned inhibition.

Programme :

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 Remarques :

Nom de l'auteur de la fiche :

Claudia PICHON - STARKE

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