Session JEP orale - O6
Production et perception
Vendredi 13 Juin - 10h30 12h30
Doit-on supposer un niveau de représentations pré-lexical de nature phonémique ?
- Sophie Dufour ( CNRS & Université d' Aix-Marseille)
- Claire Grataloup ( Université de Genève)
- Ulrich Frauenfelder ( Université de Genève)
- Résumé : This study examines the nature of the phonological representations mediating spoken word recognition by means of phonetic priming in which primes and targets are phonetically similar but share no phonemes (GUESS - CAGE). We found an inhibitory priming effect of similar size for words and non-word primes in both a shadowing and a same-different judgement task. Together, these findings suggest a sublexical locus of the inhibitory phonetic priming effect and an intermediate phonemic level of representation between featural and lexical representations.
Bases phonétiques du trait [glotte ouverte] : données berbères
- Rachid Ridouane ( LPP (CNRS - Sorbonne Nouvelle))
- G.-Nick Clements ( LPP (CNRS - Sorbonne Nouvelle))
- Résumé : In spite of the fundamental role that distinctive features play in current linguistics, current research continues to raise many basic questions concerning the relation they have to measurable physical properties in the articulatory and acoustic/auditory domains. This paper addresses this question through the analysis of the phonetic bases of the distinctive feature [spread glottis], based on acoustic, fiberscopic, and photoelectroglottographic data from Tashlhiyt Berber. A definition for this feature is proposed, which associates a specific articulatory state and gesture with an equally specific acoustic cue. For this feature to be recovered, both the articulatory and acoustic conditions should be met.
Un circuit pariéto-frontal des bascules perceptives en parole : une étude iEEG
- Anahita Basirat ( GIPSA-Lab/ICP, CNRS UMR 5216, Grenoble INP, Université Joseph Fourier, Université Stendhal, Grenoble)
- Marc Sato ( GIPSA-Lab/ICP, CNRS UMR 5216, Grenoble INP, Université Joseph Fourier, Université Stendhal, Grenoble)
- Jean-Luc Schwartz ( GIPSA-Lab/ICP, CNRS UMR 5216, Grenoble INP, Université Joseph Fourier, Université Stendhal, Grenoble)
- Philippe Kahane ( Département de Neurologie et Psychiatrie & INSERM U836-UJF-CEA, Hôpital Michallon, Grenoble et 4 CTRS-IDEE, Hospices Civils de Lyon)
- Jean-Philippe Lachaux ( Unité Dynamique Cérébrale et Cognition, INSERM U821, Lyon)
- Résumé : The verbal transformation effect refers to perceptual alternations while listening to a speech sequence repeated rapidly. This effect is a rich source of information about the speech processing mechanism in the brain. In addition, the verbal transformation effect provides a tool for studying the mechanisms related to attention and decision making (including speech segmentation). In this work, using intracerebral EEG recordings from two epileptic patients, we find gamma activity related to verbal transformations in the left inferior frontal and the left supramarginal gyri. We discuss these findings in relation to perceptuo-motor linkes and dorsal circuit of speech perception. We also discuss the linke with a possible parieto-frontal circuit, already displayed in other perceptual takes.
Modelage perceptuel du contrôle de la matière phonique en L2 : Variabilité interindividuelle
- Véronique Delvaux ( Université de Mons-Hainaut)
- Kathy Huet ( Université de Mons-Hainaut)
- Myriam Piccaluga ( Université de Mons-Hainaut)
- Bernard Harmegnies ( Université de Mons-Hainaut)
- Résumé : This paper reports on an exploratory study of the processes involved in the acquisition of new phonetic control regimes in L2 learning. The focus here is on the acquisition of long VOT initial stops by French-L1 English-L2 beginners. Francophone speakers were asked to repeat /ta/ stimuli varying in VOT duration and burst intensity. Three experiments were carried out in order to compare the objective properties of these speech productions, as well as their subjective properties as indexed by typicality and similarity judgements from French and American English listeners.
Du percept auditif au geste articulatoire : les capacités perceptuo-motrices chez les enfants normolecteurs et dyslexiques
- Muriel Lalain ( GIPSA-Lab)
- Nathalie Vallée ( GIPSA-Lab)
- Jean-Luc Schwartz ( GIPSA-Lab)
- Résumé : It is an old matter of debate to determine to what extent perceptual and motor representations are connected in speech communication. A number of recent neurocognitive data show the existence of strong links between perception and action in the human brain. In the framework of our own perceptuo-motor theory in which speech units are considered as gestures shaped by perceptual processes, we have recently developed a new paradigm for studying the ability of listeners to recover vowel gestures from vowel sounds (Vallée et al., 2002). In this paper, we explore the ability of children, before and after the acquisition of reading (from 4 to 10 years old) to recover the basic vocalic gestures (height, frontness, rounding) from sound. We show that children are indeed able to perform these three tasks up to a certain extent. There appears a clear progress from 4 to 6 and from 6 to 10. An original algorithm enables to infer from these data an internal representational space for oral vowels. The space appears to increase in size and improve in regularity with age. A comparison with dyslexic children shows that at the same age (10 years old) there is a significant decrease in performance, associated to a poorer representation of the basic gestures.
A la poursuite du signal de parole: suite et fin
- Bernard Teston ( Laboratoire Parole et Langage Aix)
- Résumé : Histoire des techniques d'enregistrements et de visualisation du signal de parole au cours du 20ème siècle