Figure 6.

The Percentage of time spent exploring the activity chamber. As seen in previous outcome measures, the 2-hour delay showed a significant improvement over untreated animals at 1 day and 7 days post-injury (P ≤ 0.01), though not reaching significance at 4 days post-injury. The 4-hour delay also showed a trend in improvement at these time points but reached significance at only the 4 days post-injury evaluation (P ≤ 0.05). A 6-hour delay in the administration of PEG failed to produce any improvement in this outcome measure.