Fig 3.

(A) Averaged salivary melatonin concentration (N = 15) under the three light conditions: Dim light (black), 5700 K (blue) and 3000 K (red). Orange area represents mean light intensity in lux, recorded during dim light condition that illustrates protocol compliance when obtaining samples at home. (B) Averaged pupillary light (PLR) reflex recordings. Pupil diameter is expressed as percentage of each recording baseline. Pale lines represent SEM. Yellow box indicates the experimental light-on period. Data are expressed as mean ± SEM.