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. Author manuscript; available in PMC: 2014 Apr 14.
Published in final edited form as: Physiol Behav. 2013 Jan 17;0:206–212. doi: 10.1016/j.physbeh.2013.01.008

Fig. 3.

Fig. 3

Effects of long and short day lengths on prevalence, robustness and amplitude of circadian rhythms in male and female hamsters. Prevalence (A), mean±SEM robustness (B), and amplitude (C) of circadian general locomotor activity waveforms of hamsters in SDs (filled black symbols) and LDs (open white symbols). The shaded symbols at week 40 represent values of hamsters transferred from LD to SD at wk 30 (SD10). *P≤0.05 vs LD and **P≤0.005 vs. LD value. ## P≤0.005 vs. male value within same photoperiod.