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. 2013 May 1;36(5):689–698. doi: 10.5665/sleep.2628

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Effect of food concentration on lethargus quiescence. (A) The effect of food on optical transparency. All images were taken with the same light intensity and same camera exposure time. The concentration of the HB101 bacteria is shown above (1x and 4x) and below (15x and 60x) each of the 4 images. (B) The effect of food concentration on the mean and standard deviation (error bars) of the duration of lethargus. Value of each bar is shown inside the bar. N = 24 for 1X, 4X, and 60X concentrations and = 104 for 15X concentration. (C) The effect of food concentration on the mean and standard deviation (error bars) of the total lethargus quiescence. Value of each bar is shown inside the bar. N = 24 for 1X, 4X, and 60X concentrations and = 104 for 15X concentration. (D) In the absence of food, episodic quiescence outside of lethargus (arrows) is observed.