Stimulation following inactivation reduces the density of ipsilateral corticospinal boutons but not axons. Similar format to Figure 1; representative animals are shown in A, B and, a composite average in C (inactivation, n=3; inactivation-stimulation, n=6) warped data. A1, B1, C1. M1 inactivation only. A2, B2, C2. Inactivation / stimulation. Red represents the densest area for both axon terminals and boutons. Color scale: A. 0-189 μm axon / μm2 area; B,C. 0 – 21 × 10-2 boutons / μm. Scale bar. Scale bar 500 μm.