Development of non-spatial grid-like neural codes tracks inference and intelligence.

Area of Science:

• Neuroscience
• Cognitive Science
• Developmental Psychology

Background:

• Jean Piaget's theory describes children's knowledge schema development for learning.
• Neural basis for schema formation and inferential reasoning is not well understood.

Purpose of the Study:

• Investigate the neural mechanisms of cognitive development.
• Examine how the maturation of a two-dimensional (2D) knowledge map influences inferential reasoning and knowledge assimilation.

Main Methods:

• Studied 203 participants aged 8-25 years.
• Analyzed grid-cell-like codes in the entorhinal cortex (EC) and their relationship with the medial prefrontal cortex (mPFC).
• Correlated neural code maturation with real-world intelligence measures.

Main Results:

• Grid-cell-like codes in the EC strengthened with age, representing conceptual schemas.
• These neural codes predicted enhanced inferential reasoning and supported the mPFC in encoding relational information.
• New information integration into EC grid patterns was observed.
• Neural code maturation correlated with reasoning abilities.

Conclusions:

• Maturation of non-spatial grid-like neural codes in the EC provides a mechanistic explanation for cognitive development.
• This finding bridges Piaget's psychological theory with cellular representations of cognitive maps.
• The study reveals a fundamental neural basis for learning and reasoning development.