Fig. 1

A selection of key SPM results. Top row show mean JHS (red), GJH (blue), and NF (black) joint powers. Second row shows the corresponding SPM ANOVA F statistic (dashed line equivalent to α = 0.05). Third and fourth rows show post-hoc SPM T-test comparisons for people with JHS vs. people with GJH, and people with JHS vs. people with NF respectively (dashed line equivalent to α = 0.0169 to account for multiple comparisons). Figures for all comparisons made in this paper can be found in supplementary material