Session Phonetic Neuroling.:

Phonetic Neurolinguistics

Type: oral
Chair: Ingo Hertrich
Date: Monday - August 06, 2007
Time: 11:00
Room: 6 (Black)

 

Phonetic Neuroling.-1 Neurophysiological Measures of Speech Perception as Precursors of Dyslexia
Ben Maassen, Medical Psychology; Radboud University Nijmegen Medical Center
Jaco Pasman, Neurology; Radboud University Nijmegen Medical Center
Marieke van Herten, Neurology; Radboud University Nijmegen Medical Center
Paper File
  Developmental dyslexia is a language disorder which affects the phonological domain. This prospective longitudinal study aims to determine whether early markers in auditory processing can be found that contribute in the prediction of later reading problems. Over 200 children, genetically at risk of dyslexia, and a control group of over 100 children are followed from age 2 months to age 10 years. The research protocol consists of neurophysiological and behavioral measurements twice a year. This presentation reports on two studies to assess auditory information processing, by means of neurophysiological registrations, in particular auditory event-related potentials (AERPs), at age 2 and 17 months. Results showed, first a consistent pattern of responses across ages, and second quantitative AERP differences between at risk and control children. These results can be interpreted in terms of the underlying auditory processing deficits in developmental dyslexia, and can be used as clinical precursors for early intervention.
Phonetic Neuroling.-2 CEREBRAL CORRELATES OF MULTIMODAL POINTING: AN FMRI STUDY OF PROSODIC FOCUS, SYNTACTIC EXTRACTION, DIGITAL- AND OCULAR- POINTING
Hélène Loevenbruck, ICP, Speech and Cognition Department, GIPSA-lab
Coriandre Vilain, ICP, Speech and Cognition Department, GIPSA-lab
Francesca Carota, Institut des Sciences Cognitives
Monica Baciu, Laboratoire de Psychologie et Neurocognition
Christian Abry, ICP, Speech and Cognition Department, GIPSA-lab
Cédric Pichat, Laboratoire de Psychologie et Neurocognition
Laurent Lamalle, INSERM IFR 1
Christoph Segebarth, INSERM U594
Paper File
  Deixis or pointing plays a crucial role in language acquisition and speech communication and can be conveyed in several modalities. The aim of this paper is to explore the cerebral substrate of multimodal pointing. We present an fMRI study of pointing including: 1) index finger pointing, 2) eye pointing, 3) prosodic focus, 4) syntactic extraction. Fifteen subjects were examined while they gave digital, ocular and oral responses inside the 3T imager. Results of a random effect group analysis show that digital and prosodic pointings recruit the parietal lobe bilaterally, while ocular and syntactic pointings do not. A grammaticalization process is suggested to explain the lack of parietal activation in the syntactic condition. Further analyses are carried out on the link between digital and prosodic parietal activations.
Phonetic Neuroling.-3 Balanced bilinguals have one intertwined phonological system
Maija S. Peltola, Department of Phonetics and the Centre for Cognitive Neuroscience
Henna Tamminen, Department of Phonetics and the Centre for Cognitive Neuroscience
Heidi Lehtola, Department of Phonetics and the Centre for Cognitive Neuroscience
Olli Aaltonen, Department of Phonetics and the Centre for Cognitive Neuroscience
Paper File Additional Files
  Speech sound perception is based on automatically responding neural memory traces. In order to see, whether balanced bilinguals have two separate phonological systems, which can be activated in accordance with the linguistic context, we performed discrimination tasks and recorded the mismatch negativity (MMN) response from 12 Finnish-Swedish bilinguals in both linguistic contexts. Our results suggest that vowels are perceived by an intertwined phonological system, which includes the representations for the phonological categories of both languages. This system is triggered equally efficiently by both languages.

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