Fig 1.
Schematic illustration of a pupil light reflex after the presentation of a flash light.
BPD: baseline pupil diameter; MCV: maximum constriction velocity; ACA: absolute constriction amplitude; RCA: relative constriction amplitude; T75: time to reach 75% of initial resting diameter during pupillary re-dilation; DV1: Dilation velocity at 1s after Maximum constriction; PNS: contribution of parasympathetic nervous system; SNS: contribution of the sympathetic nervous system.
Fig 2.
Baseline-corrected average PLRs of the SCREEN and LED conditions.
Shaded area represents standard deviation.
Table 1.
Descriptive statistics for the pupil light reflex parameters for the LED and SCREEN conditions.
Table 2.
PLR parameter correlations coefficients within LED and SCREEN condition.
Table 3.
Rotated factor loadings (varimax normalized) for each of PLR parameters (LED and SCREEN) along with their groupings within the two emergent factors.
Table 4.
ICCs (single-measure) of the split-half test-retest reliability analysis (within each condition).
Table 5.
Pearson correlation coefficients between the parameters of the PLRs evoked by the SCREEN and LED conditions.
Fig 3.
Scatter plot of NfR score against ACA (mm) from the SCREEN condition.
Solid line represents the line of best fit; dashed line represents the 95% confident interval.
Table 6.
Spearman correlation coefficients between NfR score and PLR parameters.