Ontogenesis of circadian sleep-wakefulness rhythms and developmental changes of sleep in the altricial rat and in the precocial guinea pig

@article{Ibuka1984OntogenesisOC,
  title={Ontogenesis of circadian sleep-wakefulness rhythms and developmental changes of sleep in the altricial rat and in the precocial guinea pig},
  author={N. Ibuka},
  journal={Behavioural Brain Research},
  year={1984},
  volume={11},
  pages={185-196}
}
  • N. Ibuka
  • Published 1984
  • Biology, Medicine
  • Behavioural Brain Research
Ontogenesis of circadian sleep-wakefulness rhythms and other developmental changes of sleep were examined in the altricial rat and in the precocial guinea pig. Circadian sleep-wakefulness rhythms began to emerge on the 4th-4.5th week after birth in rats born and raised not only under light-dark (LD) 12:12 h lighting schedule but also under a constant light condition. Only ultradian rhythms were recognized in the rat up to 2.5-3.5 weeks after birth. Unlike the rat, the guinea pig did not develop… Expand
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