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. 2012 Oct 9;7(10):e46843. doi: 10.1371/journal.pone.0046843

Figure 5. Locomotor periodicity persists in N. vectensis exposed to constant light.

Figure 5

A) Actogram and B) FFT analysis of a single N. vectensis over the course of a 10-day experiment. Entrained animals were monitored in LD for 2 days prior to transfer to LL for a subsequent 8 days as indicated on the actogram. Locomotor activity is double plotted and a red line approximates average of activity onsets over the 8 days in LL. B) FFT analysis of this animal indicating a circadian period of 22 hours. C) FFT analysis was conducted on averaged raw activity data from all 9 animals and shows a prominent rhythm frequency approximately 22.5 hrs.