Table 1.

Summary of phase-shifting data from light regimens with 225–900 s exposure.

ZT23 Stimulation Protocol		Light Exposure	Behavior Onset
ID	Description	Time (s)	Δ Phase Shift, h (n)
A	Continuous illumination (15 min)	900	2.42 ± 0.10 (92)
B	Intermittent pulse 30 out of every 60 s	450	2.39 ± 0.13 (66)
C	Intermittent pulse 15 out of every 60 s	225	2.19 ± 0.14 (67)
D	Intermittent pulse 30 out of every 120 s	240	2.17 ± 0.13 (27)
E	Two 112.5 s light pulses spaced 11 min, 15 s apart	225	2.16 ± 0.12 (61)