. Author manuscript; available in PMC: 2008 Jun 4.

Published in final edited form as: Behav Brain Res. 2007 Feb 27;180(1):62–68. doi: 10.1016/j.bbr.2007.02.022

Table 1.

Correlations in sleep measures and motor activity counts between day 1 and 2 in individual rats during total 24 h and separate 12 h of light and dark periods.

	Total 24 h	Light 12 h	Dark 12 h
Total Sleep	0.81 ^***	0.71 ^***	0.71 ^***
NREM
Time	0.87 ^***	0.78 ^***	0.76 ^***
Episode Number	0.58 ^**	0.54 ^*	0.79 ^***
Episode Length	0.68 ^***	0.66 ^***	0.71 ^***
REM
Time	0.71 ^***	0.81 ^***	0.59 ^**
Episode Number	0.57 ^*	0.69 ^***	0.58 ^*
Episode Length	0.63 ^**	0.52 ^*	0.34
Percentage	0.85 ^***	0.86 ^***	0.72 ^***
Motor activity	0.96 ^***	0.86 ^***	0.96 ^***

Significance level of correlations:

p < 0.01

^**

p < 0.001

^***

p < 0.0001