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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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Abstract:
The relation between the timing of language input and development of neural organization for language processing in adulthood has been difficult to tease apart because language is ubiquitous in the environment of nearly all infants. However, within the congenitally deaf population are individuals who do not experience language until after early childhood. Here, we investigated the neural underpinnings of American Sign Language (ASL) in 2 adolescents who had no sustained language input until they were approximately 14 years old. Using anatomically constrained magnetoencephalography, we found that recently learned signed words mainly activated right superior parietal, anterior occipital, and dorsolateral prefrontal areas in these 2 individuals. This spatiotemporal activity pattern was significantly different from the left fronto-temporal pattern observed in young deaf adults who acquired ASL from birth, and from that of hearing young adults learning ASL as a second language for a similar length of time as the cases. These results provide direct evidence that the timing of language experience over human development affects the organization of neural language processing.
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Articles
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4153811/ https://doi.org/10.1093/cercor/bht137 http://www.ncbi.nlm.nih.gov/pubmed/23696277
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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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Where to look for American Sign Language (ASL) sublexical structure in the visual world: Reply to Salverda (2016).
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