Selective cortical mapping of biological motion processing in young infants
Sarah Lloyd-Fox1, Anna Blasi, Nick Everdell
1Centre for Brain and Cognitive Development, Birkbeck, University of London, Henry Wellcome Building, London, United Kingdom. s.fox@bbk.ac.uk
Journal of Cognitive Neuroscience
|October 20, 2010
Summary
The infant brain shows early specialization for processing biological movements like facial and manual actions. Specific brain regions activate differently based on the type of biological motion observed, indicating a developing social brain network.
Area of Science:
- Neuroscience
- Developmental Psychology
- Cognitive Science
Background:
- Adults exhibit a network of brain regions processing biological motion, including facial and manual movements.
- The developmental trajectory of this cortical specialization in infants remains largely unknown.
Purpose of the Study:
- To investigate the specialization of the infant brain for processing different biological movements.
- To explore how cortical regions respond to facial and manual movements in early development.
Main Methods:
- Functional near-infrared spectroscopy (fNIRS) was used to record hemodynamic responses in 5-month-old infants.
- Infants viewed videos of biological movements (hands, mouth, eyes) contrasted with nonbiological movements.
Main Results:
- Distinct frontal and temporal cortical regions responded to biological movements.
- Differential patterns of cortical activation were observed based on the specific type of biological movement presented.
- Evidence suggests selective regional specialization within a developing social brain network.
Conclusions:
- Infant brains selectively respond to biologically relevant movements from an early age.
- The findings reveal early maps of selective cortical activation for biological motion processing.
- This highlights the foundational development of the human social brain network.
