Fig. 4
From: The spatial pattern of bioluminescent flashes in the polychaete Eusyllis blomstrandi (Annelida)
Eusyllis blomstrandi. The pattern of luminescence in the course of a single flash [labelled (a) in Figs. 5, 6] in a fragment comprising the posterior 29 segments of a 68 segment-long worm. Luminescence starts in the anterior segments (nos. 39–49 on top in this figure) and ends in the most posterior segments of the fragment. The video images are taken at 10 ms intervals (see Sect. ”Materials and methods”). Stimulation by mechanical shocks to the glass support