Memory-Enhancing Effects of the Crude Extract of Polygala tenuifolia on Aged Mice

Figure 4

Effect of EPT on the probe and memory retention in MWM tests of the aged mice. The probe trial was performed 24 h after the acquisition test, (a) swimming time in target quadrant, (b) crossing numbers, (c) swimming distance in target quadrant, (d) swimming speed, and (e) escape latency on memory retention test. Gal 3 mg/kg represents galantamine 3 mg/kg group. Values represent mean ± S.E.M (𝑛= 8–10 in each group). ^#𝑃<0.05 and ^##𝑃<0.01 compared with the normal control group; ^∗𝑃<0.05 and ^∗∗𝑃<0.01 compared with the aged control group.

(a)

(b)

(c)

(d)

(e)