The changing landscape of functional brain networks for face processing in typical development.
Jane E Joseph1, Joshua E Swearingen, Jonathan D Clark
1Department of Anatomy and Neurobiology, College of Medicine, University of Kentucky, Lexington, KY 40536, USA. josep@musc.edu
Neuroimage
|August 22, 2012
Summary
Brain development enhances face recognition by strengthening specific brain connections. Childhood shows increased segregation in the right occipital face area (ROFA), while adulthood reveals greater visuo-limbic integration for faces and objects.
Area of Science:
- Neuroscience
- Developmental Psychology
- Cognitive Science
Background:
- Facial expertise develops throughout childhood and adulthood.
- Brain networks undergo significant changes during development.
- Functional connectivity patterns are crucial for cognitive functions like face processing.
Purpose of the Study:
- To investigate developmental changes in face network functional connectivity.
- To examine how brain region segregation and integration evolve from childhood to adulthood.
- To identify specific brain network alterations underlying enhanced face processing in adults.
Main Methods:
- Utilized a graph-theory approach to analyze functional connectivity.
- Compared brain activity during face-viewing in children (5-12 years) and adults (18-43 years).
- Focused on the right occipital face area (ROFA) and visuo-limbic connections.
Main Results:
- The right occipital face area (ROFA) showed increased strength and within-module clustering in children, indicating functional segregation.
- Connectivity strength and diversity increased between visual and limbic regions from childhood to adulthood, signifying enhanced visuo-limbic integration.
- This integration was prominent for faces and also observed for natural objects.
Conclusions:
- Developmental changes in face processing involve segregation of posterior visual modules in childhood and increased visuo-limbic integration into adulthood.
- These neural changes likely support the development of perceptual expertise for face individuation and processing of other visually similar categories.
- The findings highlight a dynamic interplay between functional segregation and integration in the developing brain for specialized cognitive functions.
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