Figure 4.

Effect of previous TMS on stretch reflex modulation. A, An example of the reflex responses in both muscles (thick lines) when TMS was applied 50 ms before the perturbation (vertical dashed line). The thin lines indicate the waveforms when only TMS was applied. B, Comparisons of reflex responses with TMS in both muscles between the force fields. Other notations are the same as in Figure 3B. C, Comparisons of the difference in reflex response between the fields (R-FF minus L-FF). The asterisks express a significant difference between the force fields (** p < 0.01). Note that the differences in reflex responses between the force fields were eliminated by applying previous TMS, whereas the reflex responses themselves were still clearly present.