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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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Abstract:
We combined magnetoencephalography (MEG) and magnetic resonance imaging (MRI) to examine how sensory modality, language type, and language proficiency interact during two fundamental stages of word processing: (1) an early word encoding stage, and (2) a later supramodal lexico-semantic stage. Adult native English speakers who were learning American Sign Language (ASL) performed a semantic task for spoken and written English words, and ASL signs. During the early time window, written words evoked responses in left ventral occipitotemporal cortex, and spoken words in left superior temporal cortex. Signed words evoked activity in right intraparietal sulcus that was marginally greater than for written words. During the later time window, all three types of words showed significant activity in the classical left fronto-temporal language network, the first demonstration of such activity in individuals with so little second language (L2) instruction in sign. In addition, a dissociation between semantic congruity effects and overall MEG response magnitude for ASL responses suggested shallower and more effortful processing, presumably reflecting novice L2 learning. Consistent with previous research on non-dominant language processing in spoken languages, the L2 ASL learners also showed recruitment of right hemisphere and lateral occipital cortex. These results demonstrate that late lexico-semantic processing utilizes a common substrate, independent of modality, and that proficiency effects in sign language are comparable to those in spoken language.
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Keyword:
Neuroscience
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URL: https://doi.org/10.3389/fnhum.2013.00322 http://www.ncbi.nlm.nih.gov/pubmed/23847496 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3698463
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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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