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. Author manuscript; available in PMC: 2011 Nov 15.
Published in final edited form as: Neuroimage. 2009 Dec 16;53(3):1135–1146. doi: 10.1016/j.neuroimage.2009.12.028

Figure 1.

Figure 1

Geometrical relationship between cortical thickness, surface area and grey matter volume. In the surface-based representation, the grey matter volume is a quadratic function of distances in the surfaces and a linear function of the thickness. In the volume-based representation, only the volumes can be measured directly and require partial volume-effects (not depicted) to be considered.