Statistical analysis
ADVERSE EFFECTS
According to a previous study [The mean values of the amplitudes and latencies measured at different time points were analyzed by independent sample t tests. Repeated-measures ANOVA was used to check within-group differences at different time points. For categorical variables such as the incidence of adverse effects and body movement, the chi-square test or Fisher’s exact test was performed. We conducted all statistical analyses with SPSS version 26.0 (IBM Corporation, USA).