Direct innervation of GnRH neurons by encephalic photoreceptors in birds.

@article{Saldanha2001DirectIO,
  title={Direct innervation of GnRH neurons by encephalic photoreceptors in birds.},
  author={Colin J. Saldanha and A J Silverman and Rae Silver},
  journal={Journal of biological rhythms},
  year={2001},
  volume={16 1},
  pages={39-49}
}
In nonmammalian vertebrates, photic cues that regulate the timing of seasonal reproductive cyclicity are detected by nonretinal, nonpineal deep brain photoreceptors. It has long been assumed that the underlying mechanism involves the transmission of photic information from the photoreceptor to a circadian system, and thence to the reproductive axis. An alternative hypothesis is that there is direct communication between the brain photoreceptor and the reproductive axis. In the present study… CONTINUE READING