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Resumption in the production of focused constructions in Akan speakers with agrammatism ...
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Mapping Verb Retrieval With nTMS: The Role of Transitivity
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In: Front Hum Neurosci (2021)
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Bihemispheric Navigated Transcranial Magnetic Stimulation Mapping for Action Naming Compared to Object Naming in Sentence Context
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In: Brain Sci (2021)
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Processing of Turkish evidential markers: Evidence from ERP studies
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In: Linguistic Society of New Zealand Conference (LingSoc) ; https://hal.archives-ouvertes.fr/hal-02436705 ; Linguistic Society of New Zealand Conference (LingSoc), Nov 2019, University of Canterbury, New Zealand (2019)
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Classification of Spontaneous Speech of Individuals with Dementia Based on Automatic Prosody Analysis Using SVM ...
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Classification of Spontaneous Speech of Individuals with Dementia Based on Automatic Prosody Analysis Using SVM ...
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Individual differences in CI users’ lexical access (Nagels et al., 2019) ...
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Individual differences in CI users’ lexical access (Nagels et al., 2019) ...
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The production of grammatical and lexical determiners in Broca’s aphasia ...
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The production of grammatical and lexical determiners in Broca’s aphasia ...
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Resumption in the production of focused constructions in Akan speakers with agrammatism
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Identifying the Speech Production Stages in Early and Late Adulthood by Using Electroencephalography
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Abstract:
Structural changes in the brain take place throughout one’s life. Changes related to cognitive decline may delay the stages of the speech production process in the aging brain. For example, semantic memory decline and poor inhibition may delay the retrieval of a concept from the mental lexicon. Electroencephalography (EEG) is a valuable method for identifying the timing of speech production stages. So far, studies using EEG mainly focused on a particular speech production stage in a particular group of subjects. Differences between subject groups and between methodologies have complicated identifying time windows of the speech production stages. For the current study, the speech production stages lemma retrieval, lexeme retrieval, phonological encoding, and phonetic encoding were tracked using a 64-channel EEG in 20 younger adults and 20 older adults. Picture-naming tasks were used to identify lemma retrieval, using semantic interference through previously named pictures from the same semantic category, and lexeme retrieval, using words with varying age of acquisition. Non-word reading was used to target phonological encoding (using non-words with a variable number of phonemes) and phonetic encoding (using non-words that differed in spoken syllable frequency). Stimulus-locked and response-locked cluster-based permutation analyses were used to identify the timing of these stages in the full time course of speech production from stimulus presentation until 100 ms before response onset in both subject groups. It was found that the timing of each speech production stage could be identified. Even though older adults showed longer response times for every task, only the timing of the lexeme retrieval stage was later for the older adults compared to the younger adults, while no such delay was found for the timing of the other stages. The results of a second cluster-based permutation analysis indicated that clusters that were observed in the timing of the stages for one group were absent in the other subject group, which was mainly the case in stimulus-locked time windows. A z-score mapping analysis was used to compare the scalp distributions related to the stages between the older and younger adults. No differences between both groups were observed with respect to scalp distributions, suggesting that the same groups of neurons are involved in the four stages, regardless of the adults’ age, even though the timing of the individual stages is different in both groups.
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Keyword:
Neuroscience
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6746946/ https://doi.org/10.3389/fnhum.2019.00298 http://www.ncbi.nlm.nih.gov/pubmed/31551734
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The verb and noun test for peri-operative testing (VAN-POP): standardized language tests for navigated transcranial magnetic stimulation and direct electrical stimulation
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Processing of evidentiality in Turkish: An ERP study
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In: 19th International Science of Aphasia Conference ; https://hal.archives-ouvertes.fr/hal-02054640 ; 19th International Science of Aphasia Conference, Sep 2018, Venice, Italy (2018)
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Graph-based measurements of the decline of syntactic complexity in speakers with dementia. (SOA 2018) ...
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Graph-based measurements of the decline of syntactic complexity in speakers with dementia. (SOA 2018) ...
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