Table 1.

Results from hidden platform acquisition training in the control and different experimental groups at particular days of exposure period (values are presented as mean ± SEM, n = 10 for each group).

		Latency (s)
Exposure duration	Days of training	CG	EG-I	EG-II
2∼5d	1d	80.6 ± 3.1	83.8 ± 2.8	82.3 ± 3.1
	2d	77.6 ± 5.7	76.9 ± 6.2	76.6 ± 4.3
	3d	72.6 ± 6.2	60.8 ± 6.0	73.7 ± 5.6
	4d	68.0 ± 8.7	59.2 ± 5.7	72.2 ± 4.9
16∼19d	1d	80.8 ± 4.5	85.7 ± 2.8	74.8 ± 6.1
	2d	79.8 ± 3.8	75.4 ± 5.5	67.2 ± 6.7
	3d	77.4 ± 5.3	70.6 ± 7.5	66.8 ± 7.2
	4d	55.8 ± 5.2	66.2 ± 9.1	70.2 ± 8.0
30∼33d	1d	82.8 ± 2.8	75.8 ± 4.5	74.6 ± 5.3
	2d	69.8 ± 6.8	68.0 ± 7.6	63.3 ± 7.2
	3d	58.5 ± 8.1	67.0 ± 6.9	65.2 ± 6.8
	4d	54.4 ± 10.0	46.1 ± 8.8	57.0 ± 8.8