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A) Standard error of entropy estimates in CSF voxels. White stars indicate “acceptable” combination of m and r, for which the median entropy estimate in CSF voxels across participants was less than 0.1. Red crosses indicate combinations of m and r that resulted in a failure of entropy estimation in at least 1 voxel across all participants. B) Percentage of all CSF voxels (across all participants) showing a failure of entropy estimation.
