a statistical trendp = 0.07
For the GABA/Glu ratio, the 2 × 5 RM-ANOVA revealed a statistical trend for the factor stimulation condition (F (1, 20) = 3.581, p = 0.07, η 2 p = 0.152), no significant effect of the factor time point (F (4, 80) = 0.907, p = 0.46, η 2 p = 0.043), but a significant stimulation condition × time point interaction (F (4, 80) = 2.555, p = 0.04, η 2 p = 0.113).