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Lexical leverage: category knowledge boosts real-time novel word recognition in 2-year-olds.
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In: Developmental science, vol 19, iss 6 (2016)
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Semantic structure in vocabulary knowledge interacts with lexical and sentence processing in infancy
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Lexical leverage: Category knowledge boosts real-time novel word recognition in two-year- olds
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Age-related Changes in Tissue Signal Properties Within Cortical Areas Important for Word Understanding in 12- to 19-Month-Old Infants
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Independence of Early Speech Processing from Word Meaning
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Travis, Katherine E.; Leonard, Matthew K.; Chan, Alexander M.; Torres, Christina; Sizemore, Marisa L.; Qu, Zhe; Eskandar, Emad; Dale, Anders M.; Elman, Jeffrey L.; Cash, Sydney S.; Halgren, Eric. - : Oxford University Press, 2013
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Abstract:
We combined magnetoencephalography (MEG) with magnetic resonance imaging and electrocorticography to separate in anatomy and latency 2 fundamental stages underlying speech comprehension. The first acoustic-phonetic stage is selective for words relative to control stimuli individually matched on acoustic properties. It begins ∼60 ms after stimulus onset and is localized to middle superior temporal cortex. It was replicated in another experiment, but is strongly dissociated from the response to tones in the same subjects. Within the same task, semantic priming of the same words by a related picture modulates cortical processing in a broader network, but this does not begin until ∼217 ms. The earlier onset of acoustic-phonetic processing compared with lexico-semantic modulation was significant in each individual subject. The MEG source estimates were confirmed with intracranial local field potential and high gamma power responses acquired in 2 additional subjects performing the same task. These recordings further identified sites within superior temporal cortex that responded only to the acoustic-phonetic contrast at short latencies, or the lexico-semantic at long. The independence of the early acoustic-phonetic response from semantic context suggests a limited role for lexical feedback in early speech perception.
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Keyword:
Articles
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URL: http://www.ncbi.nlm.nih.gov/pubmed/22875868 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3767959 https://doi.org/10.1093/cercor/bhs228
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Lexical Activation during Sentence Comprehension in Adolescents with History of Specific Language Impairment
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Lexical knowledge without a lexicon?
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In: Methodological and analytic frontiers in lexical research (2012)
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IDS Mannheim
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Generalized event knowledge activation during online sentence comprehension
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Once is Enough: N400 Indexes Semantic Integration of Novel Word Meanings from a Single Exposure in Context
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Generalized Event Knowledge Activation During Online Sentence Comprehension
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In: Psychology Publications (2012)
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Generalized Event Knowledge Activation During Online Language Comprehension
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In: Psychology Publications (2012)
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