| BIC_sparseICA | BIC-like Criterion for Tuning Parameter Selection in Sparse ICA | 
| create_group_list | Create a List of fMRI Files for Group ICA Analysis | 
| est.M.ols | Estimate mixing matrix from estimates of components | 
| example_sim123 | Example sim123 Dataset | 
| gen.inits | Function for generating random starting points | 
| gen_groupPC | Generate Group-Level Principal Components (PCs) for fMRI Data | 
| givens.rotation | For a given angle theta, returns a d x d Givens rotation matrix | 
| group_sparseICA | Perform Group Sparse Independent Component Analysis (Sparse ICA) | 
| matchICA | Match ICA results based on L2 distances and Hungarian | 
| relax_and_split_ICA | Relax-and-split ICA Function for Sparse ICA wrapper | 
| signchange | Change the sign of S and M matrices to positive skewness. | 
| soft_thresh_R | Soft-threshold function | 
| sparseICA | Sparse Independent Component Analysis (Sparse ICA) Function | 
| theta2W | Convert angle vector into orthodox matrix | 
| whitener | The function for perform whitening. |