Fig. 2
From: Differential influences of environment and self-motion on place and grid cell firing
Place cell firing patterns under visual gain decrease. a, b Three place cells simultaneously recorded in a 60 × 60 cm square box (a), a 60 × 60 cm virtual square (b), and a probe trial where visual gain was reduced along the x axis (G = 2/3) plotted in motor coordinates (c) and visual coordinates (d). Layout as Fig. 1c–f, stretch factor F mapping visual plots to baseline shown in red. e, f Change of place field size was significantly larger on the manipulated than un-manipulated axis when plottedi in motor coordinates (f; n = 122 for all fields, paired t-test, t(121) = 9.77, p < 0.001; n = 84 for fields distal to boundaries, t(83) = 7.71, p < 0.001) but not when plotted in visual coordinates (e; n = 122 for all fields, t(121) = 1.07, p = 0.29; n = 84 for distal fields, t(83) = −0.45, p = 0.65), reflecting strong visual influence. (g, h) Distribution of motor influence scores ‘MI’ based on firing rate maps (g) or population vectors (h; see Methods and Fig. 1)
