Cortical Folding Pattern and its Consistency Induced by Biological Growth

Area of Science:

• Neuroscience
• Computational Biology
• Biophysics

Background:

• Cortical folding, the formation of gyri and sulci, is intrinsically linked to brain function.
• Understanding the mechanisms of cortical convolution is crucial for insights into normal and pathological brain states.

Purpose of the Study:

• To investigate the developmental mechanisms of cortical folding.
• To analyze the influence of differential growth on brain structure formation.
• To validate computational models with experimental observations.

Main Methods:

• Modeling the living human brain as a soft structure with a growing cortex and inner core.
• Employing analytical interpretations of differential growth to identify critical growth ratios for instability and crease formation.
• Utilizing non-linear finite element models to study crease formation and secondary morphological folds.

Main Results:

• Differential growth ratios, initial thickness, and material properties significantly impact brain morphological patterns.
• Analytical models provide preliminary insights into growth ratios critical for instability and crease formation.
• Computational models successfully simulate crease formation and secondary folds in developing brains.

Conclusions:

• The study elucidates the critical role of growth dynamics and material properties in shaping the convoluted cerebral cortex.
• Findings contribute to understanding the consistency and correlation of gyri-sulci formation.
• This research offers a framework for exploring brain development and malformations.