FIGURE 6.

Correlations between the Fz relative theta gradients, accuracy gains on the Matrix Rotation Test and improvements of post-training Fz alpha PSD for all NF group’s participants (N = 8). Specifically, the positive correlations between (A) relative theta gradient and M. Rot. accuracy (Kendall′s τ = 0.617, p-value = 0.040) (B) relative theta gradient and post-training alpha PSD during activity periods (τ = 0.556, p-value = 0.037) and (C) M. Rot. accuracy gains and post-training alpha PSD (τ = 0.694, p-value = 0.021); Additionally, there is a non-represented positive correlation between the relative theta training gradient and score gains in the D. Span task (τ = 0.718, p-value = 0.016); In-plot dots represent participants.