Table 1.

Statistical comparison of mean values of the nerve discharges.

Group	Pre-ES	Post-ES
Control	8.21 ± 0.48 Hz	7.65 ± 0.95 Hz
Presaline	91.86 ± 4.39 Hz	137.39 ± 23.90 Hz*
Pre-1% lido	50.31 ± 2.90 Hz	56.86 ± 2.97 Hz*
Pre-5% lido	23.76 ± 0.57 Hz	32.86 ± 2.10 Hz*

Control: sham operation with electrophysiological recording at the corresponding stages. ES: electrical stimulation. Data are presented as mean ± standard error of the mean (SEM) and *P < 0.05 compared with the pre-ES stage.