Geometric Structures Related to the Human Brain : Cortical Geometry Versus Functional Geometry of the Cortex

Using a three-dimensional mesh from T1-weighted MRI of human brain, we propose construction of geometric structures that are needed in computational neuroanatomy, such as identification of anatomical landmarks. Further, registration of neuronal signals recorded during brain information processing in a task, makes it possible to describe the dynamics of the cortical activation field in this cortical geometry. We apply these results to dynamics of response of the anterior cingulate cortex in response to heat pain