Figure 6.

Dynamic reorganization of hindlimb motor maps after hemisection. A, F, In intact rats, hindlimb motor maps contain representations of contralateral joints (hip, knee, ankle, toe) exclusively. B, C, Ipsilesional hindlimb motor maps disappear in the initial week after hemisection and reappear 2 weeks after SCI. D, Three weeks after hemisection, the ipsilesional hindlimb motor maps reorganize to produce movements of both hindlimbs. E, Four to 5 weeks after hemisection, the ipsilesional motor maps return to normal. G–J, Following hemisection, contralesional hindlimb motor maps remain absent for up to 5 weeks.