图 书 馆
基于概率模型的EEG/MEG信号源分离与连通性分析Separating Sources and Analysing Connectivity in EEG/MEG Using Probabilistic Models |
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| 课程网址: | http://videolectures.net/bbci2012_hyvarinen_probabilistic_models/ |
| 主讲教师: | Aapo Hyvärinen |
| 开课单位: | 赫尔辛基大学 |
| 开课时间: | 2012-12-03 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Currently, there is increasing interest in analysing brain activity in resting state, or under relatively natural conditions such as while watching a movie. When using functional magnetic resonance imaging (fMRI), such analysis is typically done by independent component analysis (ICA). However, there has not been very much work on analysing data measured by EEG or MEG in similar conditions. We have been recently developing various probabilistic methods for that purpose. First, we have created new variants of ICA to more effectively separate sources of brain activity by exploiting the special structure of EEG/MEG data. Second, we have developed tests of the statistical significance of the independent components. Third, we have a developed a framework for analysis of causality (connectivity) which uses the non-Gaussianity of the data in the context of Bayesian networks or structural equation models. In this talk, I will give a short introduction to the theory of ICA, and then I will discuss these recent developments. |
| 关 键 词: | 独立分量分析; 概率方法; 大脑活动 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2021-11-27：zkj |
| 最后编审: | 2021-11-27：zkj |
| 阅读次数: | 47 |