Introduction


Independent Component Analysis (ICA) is used to extract independent source signals from the data. ICA is successfully applied on single subject single session analysis. Since most of the ICA algorithms are stochastic group analysis is complicated. In [1], group ICA framework was proposed to extend ICA to group studies. We have implemented toolboxes like Group ICA of fMRI Toolbox (GIFT) and Group ICA of EEG Toolbox (EEGIFT) based on group ICA framework.