Threshold dependent laterality curve

Abstract

<p>Graph plots simulated data for a theoretical left lateralised individual showing laterality indices (LIs) calculated from fMRI data as a function of the t-value chosen for thresholding the contrast images. At low thresholds, many voxels survive in both hemispheres, resulting in a low LI, whereas at high thresholds, only a few voxels may survive in the dominant hemisphere, resulting in a high LI. </p> <br