Nonparametric hierarchical Bayesian model for functional brain parcellation

  title={Nonparametric hierarchical Bayesian model for functional brain parcellation},
  author={Danial Lashkari and Ramesh Sridharan and Ed Vul and Po-Jang Hsieh and Nancy Kanwisher and Polina Golland},
  journal={2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Workshops},
We develop a method for unsupervised analysis of functional brain images that learns group-level patterns of functional response. Our algorithm is based on a generative model that comprises two main layers. At the lower level, we express the functional brain response to each stimulus as a binary activation variable. At the next level, we define a prior over the sets of activation variables in all subjects. We use a Hierarchical Dirichlet Process as the prior in order to simultaneously learn the… CONTINUE READING


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