Abstract:
:Semantic knowledge has thematic relations of contiguity based on association and taxonomic relations of similarity based on shared features to form categories. It is unknown if there are distinct brain networks between thematic and taxonomic organizations in children and if this distinction is related to changes in specialized brain regions with age and/or skill. We orthogonally manipulated association strength (strong, weak) and categorical relatedness (high, low) to examine 10- to 14-year-old children over a two-year interval. Moreover, we examined whether initial behavioral performance predicted brain activation changes. Weak versus strong association strength produced greater activation over time in left middle temporal gyrus and inferior frontal gyrus, and initial accuracy predicted activation changes in the latter. Moreover, high versus low categorical relatedness produced greater activation over time in left occipito-temporal cortex and precuneus, and initial accuracy predicted activation changes in the latter. These developmental findings suggest different organization for thematic and taxonomic relations.
journal_name
Brain Langjournal_title
Brain and languageauthors
Chou TL,Wong CH,Chen SY,Fan LY,Booth JRdoi
10.1016/j.bandl.2018.12.006subject
Has Abstractpub_date
2019-02-01 00:00:00pages
10-19eissn
0093-934Xissn
1090-2155pii
S0093-934X(16)30178-Xjournal_volume
189pub_type
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