highly significantp < .0001
A linear mixed-effects model with stimulation rate and pulse shape (rampUp and rampDown) as fixed factors and subject as random factor reported a highly significant effect of rate ( F (1,117) = 478.44, p < .0001) but not of shape ( F (1,117) = 0.05, p = .8154) or the interaction between rate and shape ( F (1,117) = 0.03, p = .8559) on the angle.