p597fig16.32 Data (top row) and simulations (bottom row) about grid cell development in juvenile rats.  Grid score increases (a-b and d), whereas grid spacing remains fairly flat (c and e).<BR>||  Model fits data about grid cell development (Wills etal 2010; Langston etal 2010).  Data: [Gridness, grid score, inter-field distance (cm)].  Simulations: [Gridness score, Grid spacing (cm)] vs trial.