| Description : |
Abstract: Speech perception relies on the accurate identification of phonemes within an auditory string.
These phonemes have been argued to be the smallest of meaningfully contrastive units in speech;
a change in phoneme will concurrently induce a change in meaning.
Previous modelling efforts implicate that a change in word meaning (caused by a change in phoneme)
causes a change in coupling activity in the cortical hierarchy (Schofield et al., 2009).
However, MMN has been shown to reflect language-specific phonemic representations regardless
of word meaning, even in non-words (Näätänen et al., 1997).
To disentangle this phoneme-meaning relationship, I present preliminary results
from a current study which applies Dynamic Causal Modelling (Kiebel et al., 2006)
on elicited Mismatch Negativity responses to categorical speech sound changes.
We notice condition-specific significant changes in effective connectivity for connection
strengths involving the superior temporal gyri
(STG) which are located within higher levels of the auditory cortical hierarchy. |
| Equipe organisatrice : |
Interfaces |
| Jury (Thèse / HDR) : |
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| Orateur : |
Faith Chiu |
| Titre (Thèse / HDR) : |
An analysis of coupling and decoupling neural activity in speech perception |
| Université Orateur : |
UCL (Londres) |
| URL Orateur : |
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| Ressource : |
Laboratoire J.A.Dieudonné - Salle de conférence |
| Date de début : |
11:00 - vendredi 08 juillet 2016 |
| Durée : |
1 heure(s) |
| Date de fin : |
12:00 - vendredi 08 juillet 2016 |
| Type : |
Séminaire |
| Réservation effectuée par : |
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| Dernière mise à jour : |
12:19 - mardi 21 juin 2016 |