. Author manuscript; available in PMC: 2011 Mar 17.

Published in final edited form as: Behav Brain Res. 2009 Nov 24;208(1):178. doi: 10.1016/j.bbr.2009.11.031

Table 2. Neonatal behavioral screen for postnatal days (PNDs) 6, 8, and 10.

Measures are time for negative geotaxis and righting, and locomotion (square crossings) and number of pivots during a 3-min test. F and p values are given for within-sex repeated measures ANOVAs for PNDs 8 and 10. Data are mean ± SEM.

	PND 6		PND 8		PND 10		PND 8, 10
	C57	C58	C57	C58	C57	C58	Main effect of strain^a
Negative geotaxis (sec)
Males	13±2	13±4	10±2	4±0.5^*	8±2	3±1^*	F=14.93, p=0.0017
Females	9±2	5±1	10±3	5±2	10±2	10±4	F=0.64, p=0.4391
Righting (sec)
Males	16±3	8±4	12±3	7±5	8±3	4±3	F=1.53, p=0.2372
Females	18±2	7±4^*	14±3	2±0.4^*	14±3	1±0.4^*	F=14.48, p=0.0022
Crosses
Males	3±1	22±5^*	6±2	25±6^*	7±3	26±7^*	F=16.72, p=0.0011
Females	5±2	32±7^*	13±5	26±7	11±2	54±12^*	F=12.77, p=0.0034^b
Pivots
Males	0.7±0.2	4±1^*	1±0.3	4±0.5^*	1±0.3	6±3	F=9.91, p=0.0071
Females	1±0.3	5±1^*	2±0.4	4±1^*	1±0.3	8±2^*	F=17.05, p=0.0012

Degrees of freedom for statistical comparisons = (1,14) for males and (1,13) for females.

Result from the only repeated measures analysis with a significant interaction between strain and age [F(1,13)=10.79, p=0.0059].

p<0.05 vs. same sex C57.