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Related Experiment Video

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Neurodevelopmental Reflex Testing in Neonatal Rat Pups

Neurodevelopmental Reflex Testing in Neonatal Rat Pups

Published on: April 24, 2017

Cerebral cortical development in rodents and primates.

Zoltán Molnár¹, Gavin Clowry

¹Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom. zoltan.molnar@dpag.ox.ac.uk

Progress in Brain Research

|January 11, 2012

Summary

Comparative analysis of rodent and primate brain development reveals that changes in neural progenitor cells and germinal zones drive neocortical evolution and increased brain size. Understanding these mechanisms is key to comprehending brain diversity.

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Published on: August 9, 2017

Area of Science:

Developmental Neuroscience
Comparative Neuroanatomy
Evolutionary Biology

Background:

Current understanding of brain development relies on limited model systems.
Significant variations exist in rodent and primate cerebral cortex size, dimensions, folding, and regionalization.

Purpose of the Study:

To comparatively analyze cellular and molecular mechanisms regulating neural progenitor production, cell migration, and circuit assembly.
To gain insights into the evolutionary processes shaping the neocortex.

Main Methods:

Comparative analysis of rodent and primate cortical development.
Examination of neural progenitor cell dynamics, including radial glia and intermediate progenitors.
Analysis of radial and tangential migratory patterns and interneuronal subtype generation.

Main Results:

Variations in neuronal progenitor cells and germinal zone diversification correlate with increased neuronal populations and cortical evolution.
Differences in progenitor cell proportions and migratory patterns exist between rodents and primates.
Distinct gene expression patterns and interneuronal subtype generation are observed between mouse and human cortical development.

Conclusions:

Diversification of germinal zones and progenitor cell populations are key drivers of increased brain size and cortical complexity in mammals.
Primate cortical expansion necessitates a larger, more compartmentalized subplate zone during development.
Further comparative studies across diverse rodent and primate species are crucial for understanding cortical developmental alterations.