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. Author manuscript; available in PMC: 2020 Dec 24.
Published in final edited form as: Chronobiol Int. 2020 May 13;37(6):809–823. doi: 10.1080/07420528.2020.1756840

Figure 3.

Figure 3.

Light-Dark Box. a) B6N mice spend more time in the dark zone than B6J mice. b) Number of Transitions between the light and dark zones was increased for B6Js in the 21-hour day, but not for B6Ns. c) Strain (B6J < B6N) and light cycle (T = 21 < 12:12 LD) differences were found for Latency for the first dark zone entry. d) B6N under the 21-hour day spend more time in the Dark Corners than B6N in 12:12 LD and B6J in T = 21. e) No differences found for amount of time spent in the Light Corners. †: photoperiod difference, σ: strain difference, *: significantly different from each other, at p < .05.