Understanding brain structure and function entails the inclusion of anatomical and functional information in a common space, in order to study how these different informations relate to each other in a population of subjects. In this paper, we revisit the parcellation model and explicitly combine anatomical features, i.e. a segmentation of the cortex into gyri, with a functional information under the form of several cortical maps, which are used to further subdivide the gyri into functionally consistent regions. A probabilistic model is introduced, and the parcellation model is estimated using a Variational Bayes approach. The number of regions in the model is validated based on cross-validation. It is found that about 250 patches of cortex can be delineated both in the left and right hemisphere based on this procedure. © 2008 Springer Berlin Heidelberg.
CITATION STYLE
Tucholka, A., Thirion, B., Perrot, M., Pinel, P., Mangin, J. F., & Poline, J. B. (2008). Probabilistic anatomo-functional parcellation of the cortex: How many regions? In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 5242 LNCS, pp. 399–406). Springer Verlag. https://doi.org/10.1007/978-3-540-85990-1_48
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