Fig. 2
Correlations between each speech production type and temporal dynamics of distances between each two speech production types for each cortical region. a-c. Correlations of averaged HGA of each electrode across speech preparation time and trials between (a) overt and mimed speech, (b) mimed and imagined speech, and (c) overt and imagined speech. Each dot represents each electrode. d-g. Temporal dynamics of the Hellinger distances between two speech production types at (d) superior temporal gyrus, (e) pars triangularis, (f) precentral gyrus, and (g) postcentral gyrus. The purple, magenta, and green lines depict the statistical distance between overt and mimed, between mimed and imagined, and between overt and imagined speech. The gray regions indicate confidence interval of 99.7% (± 3SD) generated by permutation.
