Distribution of whole hippocampal and subregional volumes. The scatter plots show the distribution of whole hippocampal volumes (A) and subregional (whole head, whole body, and tail) volumes (B) analysed. Volumes from the left and right hemispheres are shown for controls, whilst volumes from the dominant and non-dominant hemispheres are shown for the SMD variants (lpSMD and rpSMD). Dots represent a participant’s estimated hemispheric volume for the given hippocampal region. GC-ML-DG, dentate gyrus; HATA, hippocampal amygdaloid transition area; LH, left hemisphere; lpSMD, left-predominant semantic dementia; RH, right hemisphere; rpSMD, right-predominant semantic dementia.