Figure 3 | Scientific Reports

Figure 3

From: Differential impact in young and older individuals of blue-enriched white light on circadian physiology and alertness during sustained wakefulness

Figure 3

Time course of the distal-to-proximal skin temperature gradient (DPG), proximal and distal skin temperatures. Time course of the (a) distal-to-proximal skin temperature gradient (DPG), (b) proximal skin temperature and (c) distal skin temperature in 26 young participants (left panel) and 12 older (right panel) under dim light (black lines), white light (red lines) or blue enriched white light (blue lines). Data are plotted as a mean for each 3-hour bin relative to elapsed time (hours) after wake-up. The error bars represent the standard error of the mean.

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