Photophobic responses as TM changes.
Photophobic responses of Euglena gracilis observed by alternated repetition of experiments A and B. Experiment A: blue-light pulse illumination of whole area with 32-s on/32-off. Change in TM over time is plotted in left panels for first experiment (a), second experiment (b), and fourth experiment (c). Experiment B: blue-light checkerboard illumination pattern as shown in Fig 1(b) for 17 min out of total experiment time of 26 min. Bar graphs in right panels show TM for illuminated (non-illuminated) area I (II) averaged for blue-light on-duration (17 min) and off-duration (9 min).