Df(16)A+/− mice place fields do not drift toward goal and the model produces no enrichment. (a) Place cell recurrence by distance from reward, as in Figure 6b. (b) Session-to-session place field shift as a function of original distance from the reward, as in Figure 6c. (c,d) Place field shift and variance fits from b, as in Figure 7c,d (shaded region is 90% confidence interval calculated from refitting bootstrap resampled data). (e) Unlike the WT model, the enrichment model with Df(16)A+/− parameters shows no enrichment (see Fig. 7b). (f) Final distribution of place fields after eight iterations for Df(16)A+/− parameters.