Spectral dependency of the human pupillary light reflex. Influences of pre-adaptation and chronotype
Fig 5
Model predictions for normalized pupillary constriction (nPC) as depending on several main predictors, when all other predictors are held at an average, constant level. Traces show the model prediction for the mean, ribbons its 95% confidence interval. Dotted lines show a peak that is discussed in the main text. In (A3, B3, and C3), the x-axis is logarithmically scaled to reflect the logarithmic transformation of irradiance in the model. (A) and (D) show dependencies in Experiment I, discussed here, (B) and (C) dependencies in Experiment II and III, respectively, discussed later. (B) The red line at the bottom of (B1) indicates where the two curves differ significantly at the 0.05 level of significance.