Figure 3 : Effect of cortical growth rate on surface morphology.

From: A mechanical model predicts morphological abnormalities in the developing human brain

Figure 3

Sensitivity of (a) growth , (b) elastic volume stretch Je, (c) gyral wavelength λ, and (d) gyrification index GI for varying cortical growth rates Gc. For cortical growth rates below a critical value, no gyrification occurs. Increasing the cortical growth rate beyond this value does not affect the gyral wavelength but decreases the gyrification index: Folds maintain their length, but become more shallow.