Figure 4.

Comparison of onset latencies of evoked CFPs in both urethane-anesthetized and awake rabbits. One or more of the samples was not normally distributed (Lilliefors test, p < 0.05), and the data are therefore presented as box-and-whisker plots of absolute range (whiskers) and interquartile range (box). Onset latencies are grouped based on whether CFPs were characteristic of periocular microzones or C2 zone. For the former, data for ipsilateral periocular-evoked CFPs are presented, whereas for the latter, data for CFPs evoked by ipsilateral periocular (i.p. PO), forelimb (FL; anesthetized animals only), and contralateral periocular (co. PO; awake animals only) stimulation are compared. Each electrode track from which a CFP was recorded contributes only one data point. There was no significant difference in onset latency of ipsilateral periocular-only evoked CFPs between anesthetized and awake animals (NS). Periocular C2 potentials were evoked at significantly longer latency than periocular microzone potentials, in both awake and anesthetized animals; this periocular C2 latency was longer on average in awake animals (unmatched, two-tailed Wilcoxon's rank-sum test, *p < 0.05, ***p < 0.001).