trending toward significancep = 0.073
Using an ANCOVA, with performance improvement as the dependent variable and GABA/Glu change and group as independent variables, we found a significant effect of group ( F (1,34) = 39.423, p < 0.001) and no main effect of GABA/Glu ( F (1,34) = 2.371, p = 0.133); however, their interaction was trending toward significance ( F (1,34) = 3.423, p = 0.073).