Sleep and motor activity of the rat during ultra-short light-dark cycles.

@article{Borbly1976SleepAM,
  title={Sleep and motor activity of the rat during ultra-short light-dark cycles.},
  author={Alexander A. Borb{\'e}ly},
  journal={Brain research},
  year={1976},
  volume={114 2},
  pages={305-17}
}
The vigilance states and motor activity of the rat were recorded during ultrashort light-dark (LD) cycles. The LD schedules were the following: 10 min light -- 10 min dark (LD 10:10), LD 7.5:7.5, LD 5:5 and LD 2.5:2.5. With all short LD schedules, paradoxical sleep (PS) and high motor activity occurred more frequently during dark periods than during light. PS and motor activity were rapidly enhanced by darkness and inhibited by light, whereas the percentages of total sleep and slow wave sleep… CONTINUE READING