Application of Spatial Bayesian Hierarchical Model with Variable Selection to fMRI data

論文翻譯標題: 變數選取法於空間貝氏階層模型應用於?能性核磁共振影像之研究
  • 黃 信翰

學生論文: Master's Thesis

摘要

We propose a spatial Bayesian hierarchical model to analyze functional magnetic resonance imaging data with complex spatial and temporal structures Several studies have found that the spatial dependence not only appear in signal changes but also in temporal correlations among voxels However currently existing statistical approaches ignore the spatial dependence of temporal correlations for the computational efficiency We consider the spatial random effect models to simultaneously model spatial dependences in both signal changes and temporal correlations but keep computationally feasible Through simulation the proposed approach improves the accuracy of identifying the activations We study the properties of the model through its performance on simulations and a real event-related fMRI data set
獎項日期2015 七月 21
原文English
監督員Kuo-Jung Lee (Supervisor)

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