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. 2018 Mar 28;5:8–14. doi: 10.1016/j.nbscr.2018.03.003

Fig. 2.

Fig. 2

Illustration of light fractionation protocols. After lights-off on the last day of a 12:12 LD schedule at CT13-CT13.25 (grey box), separate groups of flies received either a 15-min pulse of uninterrupted, constant light (A), or intermittent delivery of light according to the following logic: (B) stimulation for 45 s on the minute, (C) stimulation for 30 s on the minute, (D) stimulation for 15 s on the minute, (E) stimulation with fifteen 15 s pulses positioned 30 s apart, (F) stimulation with fifteen 15 s pulses positioned 15 s apart, (G) stimulation for 30 s every 2 min, (H) stimulation for 45 s every 3 min, (I) stimulation for 225 s within two symmetrical 112.5 s blocks distributed at the tail-ends of CT13-CT13.25, (J) stimulation for ~113 s within two symmetrical 56.5 s blocks distributed at the tail-ends of CT13-CT13.25, and (K) stimulation for 15 s every 2 min.