Table 3.

Comparison of cognitive function of rats in each group (n = 10, $\overline{x}\pm s$).

Group	Escape incubation period					Exploration time
	At 2 d	At 3 d	At 4 d	At 5 d	At 6 d
NC group	49.33 ± 4.26	41.47 ± 3.05	32.61 ± 2.32	21.97 ± 2.15	10.06 ± 2.83	41.75 ± 4.36
Prop group	54.52 ± 3.91a	48.35 ± 5.64a	45.83 ± 2.57a	37.16 ± 4.33a	30.18 ± 3.27a	22.16 ± 3.09a
P value	0.013	0.012	0.011	0.021	0.014	0.011
Minocycline group	54.06 ± 4.25b	43.27 ± 4.92b	30.11 ± 3.25b	20.24 ± 3.19b	12.37 ± 4.06b	34.95 ± 5.12b
P value	0.045	0.043	0.019	0.012	0.011	0.011

Compared with NC group, ^aP < 0.05, compared with prop group, ^bP < 0.05.