Role of mechanical factors in the morphology of the primate cerebral cortex.

Indeed, there was a significant trend in increasing absolute cortical thickness from sulcal to intermediate to gyral cortices (rank correlation of individual values ρ = 0.56, p < 0.01; sulcal average: 1,747 ± 112 μm; intermediate average: 1,791 ± 90 μm; and gyral average: 2,227 ± 132 μm), confirming quantitatively previous qualitative observations [ 9 ].

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