A Mixed L2 Norm Regularized HRF Estimation Method for Rapid Event-Related fMRI Experiments
Figure 3
LS-S model. The design matrix has two regressors, one for the trial of interest and another for all other trials simultaneously. aims to obtain the activation estimate for trial 1. Therefore, a regressor is conducted for trial 1, and a second regressor is conducted for all other trials. The estimate for based on this design is the estimate activation for trial 1. This method is repeated times to obtain the estimates for all trials.
