Motor-Evoked Potential Confirmation of Functional Improvement by Transplanted Bone Marrow Mesenchymal Stem Cell in the Ischemic Rat Brain

Figure 4

Representative MEPs recorded serially by bipolar stimulation in normal rat (A) and control group (B) and BMSC group (C) 7days after reperfusion. Column (a) displayed a typical bCMEP (*) at 4.0 mA stimulation intensity and consecutive waves of bBMEP (large arrow) and bCMEP (*) at 6.0 mA stimulation intensity in the left forelimb. Column (b) shows right forelimb-evoked potentials. Column (c) shows a typical D and I wave (D and I). Column (d) displays a vestige of bCMEP (large arrow) at 6.0 mA stimulation intensity with a preceding bBMEP column (e) showing right forelimb-evoked potentials. Column (f) shows a large D wave but no I wave. Column (g) shows bCMEP (large arrow) at 6.0 mA stimulation intensity with a preceding bBMEP. Column (h) shows right forelimb-evoked potentials. Column (i) depicts a visible I wave subsequent to D wave.