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. Author manuscript; available in PMC: 2011 Mar 28.
Published in final edited form as: J Neurophysiol. 2008 Apr 16;99(6):3090–3103. doi: 10.1152/jn.01243.2007

FIG. 4.

FIG. 4

OXKO and WT mice have similar distributions of nonrapid eye movement (NREM) sleep bouts. A and B: in both groups, NREM-bout durations over 24 h follow an exponential distribution as shown by linear regression of semilog data (r2 = 0.99 in each group). C and D: this exponential pattern is preserved in separate analyses of dark- and light-period NREM sleep (r2 > 0.96 for each group).