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The relationship between sentence comprehension and lexical-semantic retuning
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The relationship between sentence comprehension and lexical-semantic retuning ...
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The Neural Time Course of Semantic Ambiguity Resolution in Speech Comprehension. ...
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The neural time course of semantic ambiguity resolution in speech comprehension
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In: J Cogn Neurosci (2020)
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Abstract:
Semantically ambiguous words challenge speech comprehension, particularly when listeners must select a less frequent (subordinate) meaning at disambiguation. Using combined MEG and EEG, we measured neural responses associated with distinct cognitive operations during semantic ambiguity resolution in spoken sentences: (i) initial activation and selection of meanings in response to an ambiguous word, and (ii) sentence reinterpretation in response to subsequent disambiguation to a subordinate meaning. Ambiguous words elicited an increased neural response approximately 400 to 800 ms after their acoustic offset compared to unambiguous control words in left fronto-temporal MEG sensors, corresponding to sources in bilateral fronto-temporal brain regions. This response may reflect increased demands on processes by which multiple alternative meanings are activated and maintained until later selection. Subsequent, disambiguating words heard after an ambiguous word were associated with marginally-increased neural activity over bilateral temporal MEG sensors, and a central cluster of EEG electrodes, which localised to similar bilateral frontal and left temporal regions. This later neural response may reflect effortful semantic integration, or elicitation of prediction errors that guide reinterpretation of previously-selected word meanings. Across participants, the amplitude of the ambiguity response showed a marginal positive correlation with comprehension scores, suggesting that sentence comprehension benefits from additional processing around the time of an ambiguous word. Better comprehenders may have increased availability of subordinate meanings, perhaps due to higher-quality lexical representations and reflected in a positive correlation between vocabulary size and comprehension success.
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Article
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7116495/ http://www.ncbi.nlm.nih.gov/pubmed/31682564 https://doi.org/10.1162/jocn_a_01493
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Pupil Dilation Is Sensitive to Semantic Ambiguity and Acoustic Degradation
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In: Brain and Mind Institute Researchers' Publications (2020)
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Contextual priming of word meanings is stabilized over sleep
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A Database of Dutch–English Cognates, Interlingual Homographs and Translation Equivalents
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Towards a distributed connectionist account of cognates and interlingual homographs: evidence from semantic relatedness tasks
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The neural time course of semantic ambiguity resolution in speech comprehension
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Listeners and readers generalize their experience with word meanings across modalities
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Retuning of lexical-semantic representations: Repetition and spacing effects in word-meaning priming. ...
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Retuning of lexical-semantic representations: Repetition and spacing effects in word-meaning priming.
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Retuning of lexical-semantic representations: Repetition and spacing effects in word-meaning priming
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Accent modulates access to word meaning: Evidence for a speaker-model account of spoken word recognition. ...
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Task-based and resting-state fMRI reveal compensatory network changes following damage to left inferior frontal gyrus
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Listeners and readers generalise their experience with word meanings across modalities
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Accent modulates access to word meaning: Evidence for a speaker-model account of spoken word recognition
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Accent modulates access to word meaning: Evidence for a speaker-model account of spoken word recognition.
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