업데이트 'README.md'

README.md

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 A set of screw  and high-density (36 channel, intermittent 2-hour recordings) EEG (electroencephalogram) recording obtained from freely-moving mice (mus musculus) (n = 9). Details of experimental method are described in the original research articles using the same dataset.
 
 > Screw EEG: 2+1 channels (EEG & accelerometer): ceaseless 9-day recording (Total 9 mice, 9x24 hours per mouse).
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-> High density EEG: 36 channels of EEG: intermittent 2-hour recordings (Total 9 mice, 2x).
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 ![Figure 1](figures/fig_recording_diagram.png)
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+> High density EEG: 36 channels of EEG: intermittent 2-hour recordings (Total 9 mice, 2x).
 
 ![Figure 2](https://www.pnas.org/content/pnas/114/9/E1727/F1.large.jpg)
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-1. Kim, B., Kocsis, B., Hwang, E., Kim, Y., Strecker, R. E., McCarley, R. W., & Choi, J. H. (2017). Differential modulation of global and local neural oscillations in REM sleep by homeostatic sleep regulation. Proceedings of the National Academy of Sciences, 114(9), E1727-E1736 [https://doi.org/10.1073/pnas.1615230114].
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-2. Kim, B., Hwang, E., Strecker, R. E., Choi, J. H., & Kim, Y. (2020). Differential modulation of NREM sleep regulation and EEG topography by chronic sleep restriction in mice. Scientific reports, 10(1), 1-13. [https://doi.org/10.1038/s41598-019-54790-y]
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 ## 1. Publication information