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Average of correct and incorrect EMG hand activity for the three groups. Scaled as a percentage. Boxes mark two time points where incorrect hand activity had statistically significant effects. (1) 280–300 msec. Group effect approached significance [F(2,51) = 2.48, p = .093]. (2) 460–480 msec. Congruency effect [F(2,102) = 7.24, ɛ = .769, p = .0031] and group × congruency interaction [F(4,102) = 3.06, ɛ = .769, p = .0317].
