Table 1.

Experimental lighting conditions for Experiments 1 and 2.

Experiment 1	# Cycles @ T	Photoperiod Conditions
Precondition	10 @ 24 h	LDark14:10 (n = 40)
Phase 1—Bifurcation Induction	56 @ 12 h	LDim4:8 (n = 16)	LDim6:6 (n = 8)	LDim8:4 (n = 8)	LDim10:2 (n = 8)
Phase 2—Bifurcation After-effects	84 @ 12 h	LDim4:8	LDim4:8	LDim4:8	LDim4:8
Phase 3—Constant Conditions	14 @ 24 h	DimDim	DimDim	DimDim	DimDim
Experiment 2	# Cycles @ T	Photoperiod Conditions
Precondition	10 @ 24 h	LDark14:10 (n = 44)
Phase 1a/1b—Bifurcation Induction	56 @ 12 h	LDim4:8 (n = 10)	LDim5:7 (n = 12)	LDim6:6 (n = 12)	LDim7:5 (n = 10)
Phase 1c—Dark nights	28 @ 12 h	LDark4:8	LDark5:7	LDark6:6	LDark7:5
Phase 1d—Dim nights	28 @ 12 h	LDim4:8	LDim5:7	LDim6:6	LDim7:5
Phase 2—T15 Entrainment	26 @ 15 h	LDim7:8	LDim8:7	LDim9:6	LDim10:5
Phase 3—T15 After-effects	56 @ 15 h	LDim7:8	LDim7:8	LDim7:8	LDim7:8