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

<table>Comparison of classification accuracies in object responsive (OR) or early visual areas. OR voxels were strongly activated in localizer runs (<i>t</i>-test, <svg height="11.375" id="M76" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 66.875 11.375" width="66.875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>, family-wise error corrected). Retinovoxels were located in the early visual area, which was delineated via retinotopic mapping analysis. Classification accuracies estimated with fivefold leave-one-out cross-validation. cHRF-MN, canonical HRF with voxels selected by MN; cHRF-LSAR, canonical HRF with voxels selected by LSAR; and 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

fig10

Figure 10

Figure 10: A Mixed L2 Norm Regularized HRF Estimation Method for Rapid Event-Related fMRI Experiments 