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Where to look for ASL sub-lexical structure in the visual world: A reply to Salverda (2016)
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Neural Language Processing in Adolescent First-Language Learners
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Neural Language Processing in Adolescent First-Language Learners
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Real-time processing of ASL signs: Delayed first language acquisition affects organization of the mental lexicon
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Neural stages of spoken, written, and signed word processing in beginning second language learners.
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In: Frontiers in human neuroscience, vol 7, iss JUN (2013)
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Learning to Look for Language: Development of Joint Attention in Young Deaf Children
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Neural stages of spoken, written, and signed word processing in beginning second language learners
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Signed words in the congenitally deaf evoke typical late lexico-semantic responses with no early visual responses in left superior temporal cortex
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Abstract:
Congenitally deaf individuals receive little or no auditory input, and when raised by deaf parents, they acquire sign as their native and primary language. We asked two questions regarding how the deaf brain in humans adapts to sensory deprivation: (1) Is meaning extracted and integrated from signs using the same classical left hemisphere fronto-temporal network used for speech in hearing individuals, and (2) in deafness, is superior temporal cortex encompassing primary and secondary auditory regions reorganized to receive and process visual sensory information at short latencies? Using magnetoencephalography (MEG) constrained by individual cortical anatomy obtained with magnetic resonance imaging (MRI), we examined an early time window associated with sensory processing and a late time window associated with lexico-semantic integration. We found that sign in deaf individuals and speech in hearing individuals activate a highly similar left fronto-temporal network (including superior temporal regions surrounding auditory cortex) during lexico-semantic processing, but only speech in hearing individuals activates auditory regions during sensory processing. Thus, neural systems dedicated to processing high-level linguistic information are utilized for processing language regardless of modality or hearing status, and we do not find evidence for re-wiring of afferent connections from visual systems to auditory cortex.
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URL: http://www.ncbi.nlm.nih.gov/pubmed/22787055 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3418348 https://doi.org/10.1523/JNEUROSCI.1002-12.2012
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Where to look for American Sign Language (ASL) sublexical structure in the visual world: Reply to Salverda (2016).
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