Cross-correlations between EMG and simulated muscle excitation during gait.

Muscle excitation is estimated based on the three spasticity models (velocity-, acceleration-, and force-related). The statistical significance level was set to 0.05 and statistical differences between models are indicated using a horizontal bar. Results are averaged over 8 and 12 values for the hamstrings (biceps femoris long head (Bic fem lh), semimembranosus (Semimem), and semitendinosus (Semiten)) and gastrocnemii (gastrocnemius medialis (Gast med) and lateralis (Gast lat)), respectively.