Table 1

EP parameters(mean (SD)) in time and frequency domain during the mechanical damaging model

EPs typeExperiment stagesAmplitudeLatencyPeak timePeak powerPeak frequency
CSEPBefore damage3.85 (1.79)13.9 (1.7)20 (7.6)17.1 (6.1)66.9 (15)
30% damage1.70 (0.62)17.4 (4.7)21.15 (3.2)2.50 (1.6)78.4 (28)
50% damage1.4 (0.45)18.6 (3.2)21.6 (2.8)2.00 (1.63)75 (34)
Total damage1.0 (0.38)18.5 (3.4)21.3 (3.1)0.66 (0.48)76.5 (48)
SSEPBefore damage6.27 (3.07)3.3 (1.4)4.6 (1.8)18.65 (1.94)436 (237)
30% damage2.74 (1.8)4.3 (2.1)6.2 (2.4)1.94 (1.5)520 (256)
50% damage1.04 (0.76)5.1 (2.7)7.8 (3.2)0.51 (0.5)406 (93)
Total damage0.68 (0.74)5.5 (3.0)7.7 (2.9)0.43 (0.7)424 (104)
CMEPBefore damage9.3 (5.1)2.9 (1.0)4.0 (1.0)38.8 (24.4)469 (212)
30% damage2.9 (1.5)3.8 (1.3)4.4 (2.0)3.96 (0.3)451 (236)
50% damage0.73 (0.32)3.9 (0.9)5.1 (1.4)2.02 (1.9408 (230)
Total damage0.29 (0.2)4.1 (0.6)5.2 (1.4)0.11 (0.2474 (288)
SCEPBefore damage10.20 (4.2)1.9 (0.6)3.1 (1)35.73 (12.4)508 (163)
30% damage4.13 (2.13)2.4 (1.0)4.2 (1.2)5.99 (2.7)579 (105)
50% damage2.7 (1.29)3.2 (1.6)4.9 (1.8)1.35 (1.06)570 (173)
Total damage0.75 (0.6)3.4 (2.1)5.1 (2.1)0.21 (0.34)549 (107)
  • CSEP=Cortical somatosensory evoked potential; SSEP=spinal somatosensory evoked potential; CMEP=cortical motor evoked potential; SCEP=spinal cord evoked potential.