The development of brain functional connectome during text reading.

Area of Science:

• Neuroscience
• Cognitive Science
• Developmental Psychology

Background:

• Reading acquisition is a complex learning task for children.
• Text reading involves intricate cognitive processes, making its neural mechanisms poorly understood.
• Understanding the developmental trajectory of reading networks is crucial for educational and clinical applications.

Purpose of the Study:

• To investigate the developmental changes in brain connectivity during story reading using connectomics.
• To compare the neural network organization for reading in children and adults.
• To explore the relationship between brain network characteristics and reading performance across age groups.

Main Methods:

• Utilized functional magnetic resonance imaging (fMRI) to capture brain activity during story reading.
• Applied graph theory analysis to examine brain network properties, including connectivity strength, nodal degree, and modular interactions.
• Recruited 42 primary school students and 32 adults for the study.

Main Results:

• Adults exhibited increased connectivity in vision-related and semantics-related brain regions compared to children.
• Children showed decreased connectivity in phonology-related brain regions relative to adults.
• Brain-behavior analysis indicated that visual circuits enhance adult reading, while phonological circuits are key for children's early reading development.

Conclusions:

• Reading development involves a significant shift from phonology-based networks to vision and semantics-based networks with increasing age.
• These findings provide insights into the neural underpinnings of cognitive development in reading.
• The study underscores the dynamic nature of brain networks supporting reading proficiency across the lifespan.