Table 1.

Average indicators of behavioral reactions of rats in the hole-board test.

Variables	Control Group (Deionized Water)	Exposure Group (Fe2O3 NPs)
Summation threshold index	11.63 ± 0.43	10.93 ± 0.34
Total activity (except defecations)	38.58 ± 2.34	18.70 ± 1.62 *
Head lifting	6.94 ± 0.93	3.60 ± 0.66 *
Rearing	0.86 ± 0.15	0.21 ± 0.06 *
Locomotion	12.54 ± 0.88	6.00 ± 0.52 *
Head dipping	8.83 ± 0.60	4.83 ± 0.38 *
Hole sniffing	8.74 ± 0.77	3.26 ± 0.52 *
Grooming (5 s—1 score)	0.68 ± 0.09	0.80 ± 0.18
Defecations	0.60 ± 0.12	0.77 ± 0.14

* p ≤ 0.05 (Student’s t-test), compared with the control group.