Figure 4From: Circadian phase-shifting effects of a laboratory environment: a clinical trial with bright and dim light Phase Response Plots for each Light Treatment. Shown are the shifts in aMT6s acrophase, which varied significantly for each treatment, as a function of the circadian timing of the light treatments, defined as the center of treatment (eight hours after arising) relative to the aMT6s acrophase at baseline.Back to article page