ERP correlates of phoneme perception in speech and sound contexts
| Autor: | Jean-Luc Nespoulous, B. Doyon, Josette Pastor, Pierre Celsis, Kader Boulanouar, Jean-François Démonet |
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| Rok vydání: | 1999 |
| Předmět: |
Adult
Male Speech perception media_common.quotation_subject Difference wave Context (language use) Task (project management) Phonetics Perception Humans media_common Motor theory of speech perception Analysis of Variance Communication Context effect business.industry General Neuroscience Environmental sounds Sound Acoustic Stimulation Evoked Potentials Auditory Speech Perception Female Cues Psychology business Cognitive psychology |
| Zdroj: | NeuroReport. 10:1523-1527 |
| ISSN: | 0959-4965 |
| DOI: | 10.1097/00001756-199905140-00024 |
| Popis: | To address the question of the existence of a phonetic module for speech perception, event-related potentials were recorded using a 32 channel system in subjects performing a detection task where the target was the ambiguous, noise-like phoneme /f/ presented either among syllables (speech context) or among environmental sounds (non-speech context). Significant context effects were observed on the N2/P3 complex elicited by the target. In particular, a well localized N2b (250-280 ms) appeared at the left temporoparietal sites on the difference wave between contexts as the result of an enhanced negativity when the target was presented among non-speech stimuli. These findings suggest the involvement of the left temporoparietal region in autonomous, modular processes of speech perception. |
| Databáze: | OpenAIRE |
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