Fig 4. Boxplot of the AC thickness in patients with FTLD and AD and control subjects. The line across the box represents the median value. The box ends represent the first and third quartiles. The end points of each graph represent the smallest and largest values. The median AC thickness is the lowest in the FTLD group of patients compared with the patients with AD and control subjects. Although considerable overlap of the values between the FTLD and AD groups of patients exists, none of the AC measurements in the FTLD group of patients reached the lowest value obtained for the control subjects.