Figure 5
EMG recorded during stimulation through the second generation electronic bridge. Manual pulse indicates the turning on (first manual pulse at the beginning of Phase II) and turning off (second manual pulse at the end of Phase III) of the treadmill. Alternating RBB and LBB EMGs are read by the microcontroller to detect forelimb stepping. Electrical pulses are generated in the lumbosacral spinal cord resulting in hindlimb stepping. Alternating EMG bursts in the tibialis anterior (TA, ankle flexor) and soleus (Sol, ankle extensor) muscles of each leg indicate rhythmic movements of the hindlimbs.