Photoperiod-dependent correlation between light-induced SCN c-fos expression and resetting of circadian phase.

@article{Trvnckov1996PhotoperioddependentCB,
  title={Photoperiod-dependent correlation between light-induced SCN c-fos expression and resetting of circadian phase.},
  author={Z Tr{\'a}vn{\'i}ckov{\'a} and Alena Sumov{\'a} and Reiner Peters and William J Schwartz and Helena Illnerov{\'a}},
  journal={The American journal of physiology},
  year={1996},
  volume={271 4 Pt 2},
  pages={R825-31}
}
In rodents, brief light pulses that shift the phase of the circadian locomotor rhythm also increase c-fos gene expression in the suprachiasmatic nucleus (SCN), site of an endogenous clock that regulates such rhythmicity. Because the magnitude of photic phase shifts varies when light pulses are applied at different time points over the course of the subjective night, we examined the degree of SCN c-fos gene expression after single 30-min light pulses were delivered at time points that spanned… CONTINUE READING