Brief Article
Copyright ©2010 Baishideng Publishing Group Co.
World J Gastroenterol. Nov 21, 2010; 16(43): 5440-5446
Published online Nov 21, 2010. doi: 10.3748/wjg.v16.i43.5440
Table 1 Summary amplitude data for graded electrical stimulation (mean ± SD)
N1/P1 (μV)SpinalCortical
Threshold21 ± 412 ± 3
2.0 × threshold49 ± 626 ± 5
Table 2 Summary data for latencies and amplitudes for spinal and cortical evoked potentials (mean ± SD)
SpinalCortical
N1 latencies (ms)4.6 ± 0.4136.1 ± 4.2
P1 latencies (ms)6.8 ± 0.5233.6 ± 12.8
N1/P1 amplitude (μV) (1.5 × threshold)38 ± 719 ± 3
Table 3 Summary data for reproducibility of latencies and amplitudes for spinal and cortical evoked potentials with repeat testing (mean ± SD)
SpinalCortical
N1 latencies (ms)4.4 ± 0.5132.1 ± 6.1
P1 latencies (ms)6.6 ± 0.6229.8 ± 15.8
N1/P1 amplitude (μV)35 ± 8.518.6 ± 3.4