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. Author manuscript; available in PMC: 2013 May 2.
Published in final edited form as: Muscle Nerve. 2010 May;41(5):614–623. doi: 10.1002/mus.21509

FIGURE 3.

FIGURE 3

Firing probability of each muscle during the “do not intervene” testing condition for (A) males and (B) females. The firing probability was calculated as the ratio of trials with a significant NRR for that muscle to the total trials performed. The distribution of firing probabilities across subjects is represented, and the median firing probability is plotted as a straight line. Five female subjects demonstrated significant muscle activation in response to the perturbation for at least 50% of trials. Thus, the median firing probability across all muscles was 0. Nine male subjects demonstrated significant muscle activation in at least 50% of trials, and firing probability in males was much higher and more consistent than for the females across all of the muscles tested. Note that, for the RF, VL, and VML muscles, the median firing probability was 1.0 for the male subjects.