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A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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Developmental differences of large-scale functional brain networks for spoken word processing.

Xin Liu1, Yin He1, Yue Gao1

  • 1State Key Laboratory of Cognitive Neuroscience and Learning & IDG/ McGovern, Institute for Brain Research, Beijing Normal University, Beijing 100875, China.

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Summary

Children

Keywords:
Functional connectivityFunctional magnetic resonance imaging (fMRI)Graph theorySpoken word processingWord processing development

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Cognitive Science

Background:

  • Adult language processing involves distinct phonological and semantic pathways.
  • The developmental trajectory of this dual-stream dissociation remains poorly understood.

Purpose of the Study:

  • To investigate how functional brain networks supporting spoken word processing mature from childhood to adulthood.
  • To compare brain network differences in children and adults during phonological and semantic tasks.

Main Methods:

  • Utilized graph-theory based brain network analysis.
  • Compared functional interaction architecture in children (8-12 years) and adults (19-26 years).
  • Assessed network properties during rhyming (phonological) and meaning (semantic) judgment tasks.

Main Results:

  • Adults showed stronger connectivity in frontal and parietal regions for rhyming, and frontal and occipital regions for meaning.
  • Adults exhibited greater between-task network differences than children.
  • Children displayed stronger connectivity in temporal and subcortical areas.

Conclusions:

  • Spoken word processing development involves increasing functional specialization.
  • The dorsal pathway supports phonological processing, while the ventral pathway supports semantic processing in adults.
  • Brain network maturation underlies the emergence of specialized language processing streams.