A Mixed L2 Norm Regularized HRF Estimation Method for Rapid Event-Related fMRI Experiments

<table>Comparison of smooth and unsmooth data. Classification accuracies estimated with fivefold leave-one-out cross-validation. Each method was applied to both unsmooth and smooth data to investigate the impact of smoothing. cHRF-MN, canonical HRF with voxels selected by MN; and cHRF-LSAR, canonical HRF with voxels selected by LSAR; cHRF-OLS, canonical HRF with voxels selected by OLS. Error bars show the standard error of the mean classification accuracy across subjects.</table>

Computational and Mathematical Methods in Medicine

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Figure 7

Figure 7: A Mixed L2 Norm Regularized HRF Estimation Method for Rapid Event-Related fMRI Experiments 