Fig. 5: GC encoding of other belt layouts.
From: Place cell maps slowly develop via competitive learning and conjunctive coding in the dentate gyrus

a Firing rate maps of GCs for the original (left), reordered (center) and novel (right) belts. Top, scheme of the belt layouts. Color-coded, each row represents the firing rate maps of a GC for the 3 belts, normalized by the peak firing rate of the cell across all belts. Only GCs exhibiting place fields in at least one of the belts are displayed. GCs are sorted according to the type of belt and the belt position of the largest firing fields. b Fraction of GCs with single (black) and multiple (gray) place fields for each belt, during early (days 22–24, left; n = 67 single and 50 multiple-field cells) and late (days 25–27, right; n = 62 single and 41 multiple-field cells) periods on the new belt layouts. c LV peak ratio (circle, individual cell; bar, the mean; error bar, s.e.m.) of LV cells for the 3 belts, during early (left, n = 18 LV cells) and late (right, n = 13 LV cells) periods on the new belt layouts. Note that the magnitude of the two firing fields is more similar in the reordered and novel belts than in the original belt. d For the groups of GCs that are active in 1 (black), 2 (green), and 3 (purple) belts, the distribution of the number of fields per cell (in the belt with the largest number of fields), during early (left) and late (right) periods on the new belt layouts. Note that cells exhibiting multiple place fields tend to represent several belts, while cells exhibiting a single place field tend to represent only one belt, t96 = 4.7, p = 9e−6 (days 22–24), t83 = 4.8, p = 6e−6 (days 25–27), two-tailed unpaired t test).