Photophobic Responses Result from Light Stimulus.

Graph showing behavioral responses over increasingly attenuated light, as measured by the number of worms in Q4 at 2 minutes. Worms were exposed to full light, 95% attenuated light, and 99% attenuated light (or optical densities of 0, 1.3 and 2.0 respectively). The trend shows that phototactic responses decreased along with diminished behavioral stimuli (light).本图表展示了光照强度逐步衰减条件下的蠕虫行为响应，该响应以2分钟时Q4区域的蠕虫数量作为量化指标。实验中，蠕虫分别被暴露于全光照、95%衰减光照及99%衰减光照环境（对应光密度分别为0、1.3与2.0）。实验趋势显示，随着行为刺激源（光照）的减弱，蠕虫的趋光响应亦随之降低。