Evidence for a daily rhythmicity in the acute release of luteinizing hormone in response to electrical stimulation in the Japanese quail

@article{Konishi2004EvidenceFA,
  title={Evidence for a daily rhythmicity in the acute release of luteinizing hormone in response to electrical stimulation in the Japanese quail},
  author={Hidehiko Konishi and Russell G. Foster and Brian Keith Follett},
  journal={Journal of Comparative Physiology A},
  year={2004},
  volume={161},
  pages={315-319}
}
SummaryThis study was undertaken to examine the effect of electrical stimulation of the hypothalamus at different times of day on luteinizing hormone (LH) secretion in male castrated quail on short days (8L∶16D). The posterior hypothalamus was stimulated with square-wave pulses of 80 μA for 2 min through chronically-implanted platinum microelectrodes. Stimulation was carried out on each quail at 4 (treatment A), 10 (B), or 14 h (C) after dawn. Plasma LH levels were increased markedly within 2… 
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