p589fig16.19 Neurophysiological data showing the smaller dorsal grid cell scales and the larger ventral grid cell scales.<BR>||  Spatial scale of grid cells increase along the MEC dorsoventral axis (Hafting etal 2005; Sargolini etal 2006; Brun etal 2008). [dorsal (left), ventral (right)] cart [rate map, autocortelogram].  How does the spatial scale increase along the MEC dorsoventral axis?