Integrated MEG/fMRI model validated using real auditory data.
Integrated MEG/fMRI model validated using real auditory data.
复制标题
使用真实听觉数据验证集成 MEG/fMRI 模型。
DOI：
10.1007/s10548-008-0056-3
复制
发表时间：
2008
期刊：
影响因子：
2.7
通讯作者：
Moran,JohnE
中科院分区：
文献类型：
--
作者：
Babajani-Feremi,Abbas;Soltanian-Zadeh,Hamid;Moran,JohnE
The main objective of this paper is to present methods and results for the estimation of parameters of our proposed integrated magnetoencephalography (MEG) and functional magnetic resonance imaging (fMRI) model. We use real auditory MEG and fMRI datasets from 7 normal subjects to estimate the parameters of the model. The MEG and fMRI data were acquired at different times, but the stimulus profile was the same for both techniques. We use independent component analysis (ICA) to extract activation-related signal from the MEG data. The stimulus-correlated ICA component is used to estimate MEG parameters of the model. The temporal and spatial information of the fMRI datasets are used to estimate fMRI parameters of the model. The estimated parameters have reasonable means and standard deviations for all subjects. Goodness of fit of the real data to our model shows the possibility of using the proposed model to simulate realistic datasets for evaluation of integrated MEG/fMRI analysis methods.
