Figure 1. Comparison of spatial learning and memory abilities among groups.

A: time spent in the target quadrant in each group (n = 3); electroacupuncture (20 Hz, 1 mA) was applied 15 min/d for 7 d. B: number of times each group entered the target quadrant position (n = 3). One-way analysis of variance was used for comparisons between multiple groups. If the overall difference was statistically significant, the least significant difference t-test was used for further pairwise comparisons. The data are expressed as mean ± standard deviation. Compared with the normal group, ^aP < 0.05; compared with the sleep deprivation group, ^bP < 0.05.