Bayesian方法对fMRI数据的多层群组分析  

Multilevel Group Analysis on Bayesian in fMRI Time Series

作　　者：周广田[1] 杨丰[1] 田晓英[2] 

机构地区：[1]黑龙江大学计算机科学技术学院,黑龙江哈尔滨150080 [2]黑龙江省科学院自动化研究所,黑龙江哈尔滨150090

出　　处：《自动化技术与应用》2016年第10期4-8,17,共6页Techniques of Automation and Applications

基　　金：黑龙江省自然基金项目(编号F201234);黑龙江省教育厅科学技术研究项目(编号12521431)

摘　　要：本文采用Bayesian方法对f MRI时间序列数据对群组进行分析,群组按照体素、脑体、个体分为多层,比较个体的特征选取作为先验加强群组的后验计算,对个体的参数估计结合经典统计方法获得体素的激活区域作为群组Bayesian推理的先验,可以有效解决计算复杂性和计算成本,有效应用在群组分析中。This paper suggests a method to process f MRI time series based on Bayesian inference for group analysis. The method uses multilevel divided by voxel, subject and group as pair comparison to reinforce posterior probability in group analysis from single subjects as priors. And also it combines classical statistics, i.e., t-test to obtain voxel activation at subject level as prior for Bayesian inference at group level. It effectively solves computation expensive and complexity. And it shows robust on Bayesian inference for group analysis.

关 键 词：fMRI时间序列 经典统计方法 Bayesian推理 群组分析 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]