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Table 1 Comparison of behavioral features during the test period among developmental ages

From: Development and experience-dependent modulation of the defensive behaviors of mice to visual threats

Condition

Shelter entry except for escape***

No. of trials ***

Time in the field (s)**

Time in the shelter (s)***

P16 (N = 11)

6.3 ± 1.1

4.1 ± 0.8

364.0 ± 80.8

530.6 ± 82.7

P21 (N = 20)

5.8 ± 0.6

6.0 ± 0.4

501.6 ± 44.9

381.6 ± 44.6

P28 (N = 16)

6.7 ± 1.1

5.1 ± 0.4

264.7 ± 36.2

611.0 ± 33.8

P35 (N = 12)

10.4 ± 1.4‡,§§

8.0 ± 0.4†,§§

483.7 ± 31.3§

326.7 ± 31.7§§

P42 (N = 12)

12.6 ± 1.9‡‡,§§

8.4 ± 0.6†,‡,§§

447.2 ± 38.7

336.3 ± 40.4§§

P56 (N = 12)

11.4 ± 1.1‡‡,§§

8.0 ± 0.4†,§§

410.0 ± 18.5

353.8 ± 24.7§§

  1. Behaviors during the test period were compared among developmental ages. The number of times the mice entered the shelter and the trigger zone tended to increase with development. P28 mice stayed in the shelter significantly longer than other age groups. ** or *** indicates P < 0.01 or P < 0.001 with the Kruskal–Wallis test. †, ‡ or § indicates P < 0.05 compared to P16, P21, or P28 data with multiple comparisons of the Steel–Dwass test performed after the Kruskal–Wallis test. Two or three symbols indicate P < 0.01 or P < 0.001, respectively