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How does the body representation system develop in the human brain?

Aurelie Fontan1, Fabien Cignetti1, Bruno Nazarian2

  • 1Aix Marseille Univ, CNRS, LNC, Laboratoire de Neurosciences Cognitives, Marseille, France; Aix Marseille Univ, CNRS, Fédération 3C, Marseille, France.

Developmental Cognitive Neuroscience
|March 18, 2017
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Summary
This summary is machine-generated.

The brain's body representation system (BRS) is developing in children (7-11 years), showing unique frontopolar cortex (FPC) activation. This suggests a functional strategy aiding body representation development beyond structural maturation.

Keywords:
Body representation systemChildrenDTIProprioceptionVBMfMRI

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Area of Science:

  • Neuroscience
  • Developmental Neuroscience
  • Cognitive Neuroscience

Background:

  • The body representation system (BRS) involves sensorimotor and frontoparietal networks.
  • Understanding BRS development in children is crucial for cognitive and neurological research.

Purpose of the Study:

  • To assess the maturity of the BRS network in children aged 7-11 years.
  • To investigate the role of structural factors in BRS differences between children and adults.
  • To explore functional strategies employed during BRS development.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to analyze brain activation.
  • Tendon vibration stimuli (100Hz for illusion, 30Hz for no illusion) were applied.
  • A two-stage random effects model was employed, with and without white and grey matter covariates.

Main Results:

  • The BRS is largely established in children, evidenced by 'illusion' vs 'no illusion' contrasts.
  • Children showed lower activation in somatosensory and parietal regions compared to adults.
  • Children uniquely activated the frontopolar cortex (FPC), unlike adults.

Conclusions:

  • BRS development in children involves both structural maturation and unique functional strategies.
  • The frontopolar cortex (FPC) may play a key role in top-down modulation for body representation establishment.
  • BRS development involves the disengagement of executive regions not typically associated with body processing.