We segmented each subject’s hippocampus using the automated
segmentation SACHA software [52–54], within the Brainvisa image
analysis platform (Institut Fe´de´ratif de Recherche de Neuroimagerie,
IFR 49, http://www.brainvisa.info/). The program allows
one to determine the volume of each hippocampus. After manually
entering the border between the head and the body of the
hippocampus, it also allows one to exactly determine the volumes of
the anterior (head) and posterior (body and tail) hippocampus.