Table 1.

Mean duration of contact (± SEM) with the objects before and after spatial change in the different experimental groups

Experiment	Groups (N)	Habituation			S4		S5
		S2	S3	S4	DO	NDO	DO	NDO
1	Control (13)	26.6  ± 1.5	19.03  ± 1.2	11.2  ± 1.1	10.0  ± 1.2	11.7  ± 1.3	15.9  ± 1.1*	7.6  ± 0.78
	AP-5 0.075 (8)	26.8  ± 2.3	14.9  ± 1.1	9.2  ± 0.8	8.7  ± 0.8	9.6  ± 0.9	12.6  ± 1.1*†	6.8  ± 0.9
	AP-5 0.15 (8)	24.1  ± 1.4	15.9  ± 1.9	11.4  ± 1.5	11.3  ± 1.6	11.4  ± 1.5	10.6  ± 1.8†	9.1  ± 0.9
	AP-5 0.3 (8)	30.7  ± 1.9	18.6  ± 1.3	12.4  ± 1.2	12.4  ± 1.4	12.4  ± 1.4	11.7  ± 1.6†	11.4  ± 1.71-160
2	Control (7)	23.1  ± 2.6	16.3  ± 1.5	11.2  ± 1.6	10.7  ± 1.6	11.5  ± 1.6	15.5  ± 2.1*	7.9  ± 0.8
	DNQX 0.001 (7)	24.9  ± 1.3	17.5  ± 1.5	10.5  ± 0.9	10.0  ± 1.2	10.9  ± 0.8	16.2  ± 1.6*	7.8  ± 1.4
	DNQX 0.005 (8)	25.0  ± 0.8	14.7  ± 1.8	10.1  ± 1.4	10.4  ± 1.7	9.8  ± 1.5	16.2  ± 1.2*	8.6  ± 0.6
3	Control (9)	24.1  ± 1.2	13.6  ± 1.7	8.1  ± 1.7	7.5  ± 1.6	8.5  ± 1.7	15.6  ± 1.0*	6.7  ± 0.4
	AP-5 0.3 (8)	23.9  ± 1.5	13.4  ± 1.3	9.6  ± 1.0	8.6  ± 1.3	10.3  ± 1.1	16.5  ± 1.5*	9.9  ± 0.7
	DNQX 0.005 (9)	23.3  ± 1.4	13.9  ± 0.9	7.9  ± 1.1	7.9  ± 1.1	7.7  ± 1.3	14.4  ± 2.2*	5.9  ± 0.9
4	Control (8)	21.4  ± 1.4	13.2  ± 1.9	7.8  ± 1.4	7.4  ± 1.7	7.4  ± 1.5	13.6  ± 1.4*	6.1  ± 0.6
	AP-5 0.15 (8)	24.7  ± 2.1	14.8  ± 2.1	8.3  ± 0.9	7.8  ± 1.1	8.5  ± 0.8	13.4  ± 1.4*	6.9  ± 0.8
	DNQX 0.001 (7)	24.6  ± 1.7	16.4  ± 1.4	7.5  ± 0.9	7.2  ± 0.9	7.8  ± 1.1	3.4  ± 0.91-160	2.8  ± 0.81-160
5	Control (7)	15.9  ± 0.8	8.7  ± 1.0	6.9  ± 1.2	6.6  ± 1.2	7.1  ± 1.1	15.1  ± 1.9*	5.8  ± 1.0
	DNQX 0.001 (7)	10.6  ± 2.3	4.2  ± 2.2	1.9  ± 0.5	1.1  ± 0.6	1.3  ± 0.5	8.8  ± 1.0†	8.7  ± 1.01-160

The duration of contact is expressed as mean per object. Mean duration of contact with the entire set of objects before the spatial change, S2–S4, and with the different object categories, DO and NDO, before (S4) and after (S5) the change.

^*p < 0.05 within DO group versus NDO group in S5;

F1-160: †p < 0.05 within object category saline versus drug-treated mice in S5.