Probabilistic anatomo-functional parcellation of the cortex: how many regions?

Abstract : 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.
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Medical image computing and computer-assisted intervention : MICCAI .. International Conference on Medical Image Computing and Computer-Assisted Intervention, Springer, 2008, 11 (Pt 2), pp.399-406
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https://hal.inria.fr/inria-00502805
Contributeur : Bertrand Thirion <>
Soumis le : jeudi 15 juillet 2010 - 17:17:19
Dernière modification le : jeudi 11 janvier 2018 - 06:12:21

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  • HAL Id : inria-00502805, version 1
  • PUBMED : 18982630

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Alan Tucholka, Bertrand Thirion, Matthieu Perrot, Philippe Pinel, Jean-François Mangin, et al.. Probabilistic anatomo-functional parcellation of the cortex: how many regions?. Medical image computing and computer-assisted intervention : MICCAI .. International Conference on Medical Image Computing and Computer-Assisted Intervention, Springer, 2008, 11 (Pt 2), pp.399-406. 〈inria-00502805〉

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