Age, sex, and verbal abilities affect location of linguistic connectivity in ventral visual pathway  

Oleh:

Burman, Douglas D. ; Minas, Taylor ; Bolger, Donald J. ; Booth, James R.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 124 no. 2 (2013), page 184-193.
Topik: fMRI; Connectivity; Development; Language; IQ; Sex; Reading
Fulltext: 124_02_Burman.pdf (885.0KB)

Isi artikel

Previous studies have shown that the strength of connectivity between regions can vary depending upon the cognitive demands of a task. In this study, the location of task-dependent connectivity from the primary visual cortex (V1) was examined in 43 children (ages 9–15) performing visual tasks; connectivity maxima were identified for a visual task requiring a linguistic (orthographic) judgment. Age, sex, and verbal IQ interacted to affect maxima location. Increases in age and verbal IQ produced similar shifts in maxima location; in girls, connectivity maxima shifted primarily laterally within the left temporal lobe, whereas the shift was primarily posterior within occipital cortex among boys. A composite map across all subjects shows an expansion in the area of connectivity with age. Results show that the location of visual/linguistic connectivity varies systematically during development, suggesting that both sex differences and developmental changes in V1 connectivity are related to linguistic function.

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