Roles of Dopamine in Circadian Rhythmicity and Extreme Light Sensitivity of Circadian Entrainment

@article{Hirsh2010RolesOD,
  title={Roles of Dopamine in Circadian Rhythmicity and Extreme Light Sensitivity of Circadian Entrainment},
  author={Jay Hirsh and Thomas Riemensperger and H{\'e}l{\`e}ne Coulom and Magali Ich{\'e} and Jamie Coupar and Serge Birman},
  journal={Current Biology},
  year={2010},
  volume={20},
  pages={209-214}
}
Light has profound behavioral effects on almost all animals, and nocturnal animals show sensitivity to extremely low light levels [1-4]. Crepuscular, i.e., dawn/dusk-active animals such as Drosophila melanogaster are thought to show far less sensitivity to light [5-8]. Here we report that Drosophila respond to extremely low levels of monochromatic blue light. Light levels three to four orders of magnitude lower than previously believed impact circadian entrainment and the light-induced… CONTINUE READING

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