Fig. 4
From: Longitudinal changes in EEG power, sleep cycles and behaviour in a tau model of neurodegeneration
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13195-020-00651-0/MediaObjects/13195_2020_651_Fig4_HTML.png)
Circadian wake and sleep differences between strains of mice. Percent time in wakefulness, NREM sleep and REM sleep from a 48-h recording period at 32 weeks of age (n = 9–13) (a, b, and c respectively). Average difference in NREM sleep between light and dark period from 1-week recording periods every 4 weeks (n = 12–23) (d). Asterisks (*) denote statistical significance (p < 0.05) at the time point between WT vs Tg, †WT vs Tg+DOX, ‡WT vs tTA, ¥Tg vs Tg+DOX, ¢Tg vs tTA and ¤Tg+DOX vs tTA