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The CHICKEN or the EGG? The timeline for lexical and semantic effects in derived word recognition using simultaneous recording of EEG & eye-tracking ...
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Electrophysiological evidence for the integral nature of tone in Mandarin spoken word recognition
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Neural responses demonstrate the dynamicity of speech perception
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The EEG/ERP technologies in linguistic research : an essay on the advantages they offer and a survey of their purveyors
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In: Methodological and analytic frontiers in lexical research (2012)
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IDS Mannheim
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PHONOLOGICAL PROCESSING OF VISUAL-SPEECH: THE PHONOLOGICAL MAPPING NEGATIVITY (PMN) AMPLITUDE IS SENSITIVE TO FEATURES OF ARTICULATION
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Electrophysiological markers of pre-lexical speech processing: Evidence for bottom–up and top–down effects on spoken word processing
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Activation in the anterior left auditory cortex associated with phonological analysis of speech input: localization of the phonological mismatch negativity response with MEG
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Cortical Activation during Spoken-Word Segmentation in Nonreading-Impaired and Dyslexic Adults ; Spoken-Word Segmentation and Dyslexia
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Cortical Activation during Spoken-Word Segmentation in Nonreading-Impaired and Dyslexic Adults
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Abstract:
We used magnetoencephalography to elucidate the cortical activation associated with the segmentation of spoken words in nonreading-impaired and dyslexic adults. The subjects listened to binaurally presented sentences where the sentence-ending words were either semantically appropriate or inappropriate to the preceding sentence context. Half of the inappropriate final words shared two or three initial phonemes with the highly expected semantically appropriate words. Two temporally and functionally distinct response patterns were detected in the superior temporal lobe. The first response peaked at ∼100 msec in the supratemporal plane and showed no sensitivity to the semantic appropriateness of the final word. This presemantic N100m response was abnormally strong in the left hemisphere of dyslexic individuals. After the N100m response, the semantically inappropriate sentence-ending words evoked stronger activation than the expected endings in the superior temporal cortex in the vicinity of the auditory cortex. This N400m response was delayed for words starting with the same two or three first few phonemes as the expected words but only until the first evidence of acoustic–phonetic dissimilarity emerged. This subtle delay supports the notion of initial lexical access being based on phonemes or acoustic features. In dyslexic participants, this qualitative aspect of word processing appeared to be normal. However, for all words alike, the ascending slope of the semantic activation in the left hemisphere was delayed by ∼50 msec as compared with control subjects. The delay in the auditory N400m response in dyslexic subjects is likely to result from presemantic–phonological deficits possibly reflected in the abnormal N100m response.
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Keyword:
ARTICLE
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6758334/
https://doi.org/10.1523/JNEUROSCI.22-07-02936.2002
http://www.ncbi.nlm.nih.gov/pubmed/11923458
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