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Communication Dans Un Congrès Année : 2007

Cerebral correlates of multimodal pointing: An fmri study of prosodic focus, syntactic extraction, digital- and ocular- pointing

Résumé

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 actions. We present an fMRI study of pointing including: 1) index finger pointing, 2) eye pointing, 3) prosodic focus production, 4) syntactic extraction (during speech production). 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.
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Dates et versions

hal-00275718 , version 1 (25-04-2008)

Identifiants

  • HAL Id : hal-00275718 , version 1

Citer

Hélène Loevenbruck, Coriandre Emmanuel Vilain, Francesca Carota, Monica Baciu, Christian Abry, et al.. Cerebral correlates of multimodal pointing: An fmri study of prosodic focus, syntactic extraction, digital- and ocular- pointing. ICPhS 2007 - 16th International Congress of Phonetic Sciences, Aug 2007, Sarrebruck, Germany. pp.1861-1864. ⟨hal-00275718⟩
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