Figure 4. Static index of normal and iOVD groups. (A) Control groups. (B) iOVD groups. A significantly lower static index was observed after 2 and 4 wks of iOVD. Datapoints represent averaged data from 3 consecutive ramp-and-hold stretches in each unit. Error bars indicate SD; n means number of single afferent units; *P < 0.05 vs. one-day iOVD, and ^#P < 0.05 vs. the respective Control subgroup in repeated-measures ANOVA, followed by Scheffé’s post hoc test. "n" refers to the number of units at each time period. Imp/s, impulses per sec.