The contribution of early language exposure to the cortical tracking of speech: evidence from a bilingual population
| Autor: | Pérez-Navarro, Jose, Piazza, Giorgio |
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| Rok vydání: | 2022 |
| Předmět: |
mTRF
Neuroscience and Neurobiology Cognitive Neuroscience entrainment phonological abilities Life Sciences bilingualism contextual probability Social and Behavioral Sciences language proficiency phase coherence exposure speech comprehension Language and linguistics lexical frequency EEG cortical tracking of speech CTS speech-brain entrainment language development |
| DOI: | 10.17605/osf.io/xah9j |
| Popis: | As we listen to speech, our brain’s oscillatory activity synchronizes to its prosodic and syllabic fluctuations, thereby facilitating comprehension. Mounting evidence in adult populations attests that efficient cortical tracking of speech within two low frequency bands — delta (0.5–4 Hz) and theta (4–8 Hz) — is crucial for comprehension, as well as shaped by language-specific knowledge. In children, recent findings indicate that the cortical mechanisms for speech tracking tune in close link with phonological abilities. Therefore, cortical tracking of speech in childhood is thought to underpin speech comprehension and facilitate language acquisition through the emergence of phonological abilities. However, the role of language-specific knowledge in tuning the cortical tracking of speech during childhood, when speech is the major input for language learning, remains unknown. In the proposed study, the amount of exposure to a given language will be used as a proxy for language knowledge in prereading children. We will investigate how variations in the amount of exposure to a language modulate the efficiency of the cortical tracking of natural speech in this language. We will capitalize on the study of delta and theta oscillatory of speech in Basque and Spanish in 5-to-6-year-old bilingual children with different amounts of exposure to each of these languages. We expect to shed light on the factors whereby language learning shapes the cortical tracking of speech, by assessing to what extent cortical tracking of speech depends on the amount of exposure to a language as well as on the degree of lexical knowledge about the speech stream. |
| Databáze: | OpenAIRE |
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