Transition From Sublexical to Lexico-Semantic Stimulus Processing.
default mode network
lexicality
lexico-semantic processing
phonological lexicon
semantic system
sublexical processing
Journal
Frontiers in systems neuroscience
ISSN: 1662-5137
Titre abrégé: Front Syst Neurosci
Pays: Switzerland
ID NLM: 101477946
Informations de publication
Date de publication:
2020
2020
Historique:
received:
22
12
2019
accepted:
07
10
2020
entrez:
16
11
2020
pubmed:
17
11
2020
medline:
17
11
2020
Statut:
epublish
Résumé
Resembling letter-by-letter translation, Morse code can be used to investigate various linguistic components by slowing down the cognitive process of language decoding. Using fMRI and Morse code, we investigated patterns of brain activation associated with decoding three-letter words or non-words and making a lexical decision. Our data suggest that early sublexical processing is associated with activation in brain regions that are involved in sound-patterns to phoneme conversion (inferior parietal lobule), phonological output buffer (inferior frontal cortex: pars opercularis) as well as phonological and semantic top-down predictions (inferior frontal cortex: pars triangularis). In addition, later lexico-semantic processing of meaningful stimuli is associated with activation of the phonological lexicon (angular gyrus) and the semantic system (default mode network). Overall, our data indicate that sublexical and lexico-semantic analyses comprise two cognitive processes that rely on neighboring networks in the left frontal cortex and parietal lobule.
Identifiants
pubmed: 33192346
doi: 10.3389/fnsys.2020.522384
pmc: PMC7662113
doi:
Types de publication
Journal Article
Langues
eng
Pagination
522384Informations de copyright
Copyright © 2020 Junker, Schlaffke, Bellebaum, Ghio, Brühl, Axmacher and Schmidt-Wilcke.
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