Figure 7.

(a) Tail suspension test and (b) Barnes Maze. There was a significant main effect of the gut microbiome (P = .008 and 0.030 for A and B respectively, (N = 9–11). *,** P < .05 and 0.001 compared to young biome at the same time point (Holm-Sidak post hoc analysis). See Supplemental Table I for more statistical details. Note that the time of immobility in the 30 d aged group showed a dichotomy as described in the text. None of the other behavioral tests regardless of time after the initial gavage showed a dichotomy