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. 2019 May 22;10:529. doi: 10.3389/fneur.2019.00529

Table 1.

The pupil light reflex (PLR) metrics (mean ± SEM) with 5,000 ms pulses and 1,000 ms pulses for different photoreceptor isolating conditions.

Photoreceptor directed stimulation
Pupil metrics
5,000 ms pulse
Mel
(17%)*
L+M (10%) S
(10%)
L–M (6%) L+M
+
Mel
S
+
Mel
L–M
+
Mel
PLR Latency (ms) 633.3 ± 43.3 341.7 ± 49.3 491.7 ± 64.4 325.0 ± 4.8 412.5 ± 45.8 579.2 ± 81.5 354.2 ± 12.5
Peak Constriction Amplitude (%) 3.2 ± 0.2 4.5 ± 0.6 3.1 ± 0.2 8.9 ± 0.4 4.8 ± 0.3 3.8 ± 0.4 8.5 ± 0.7
Time to Peak (s) 4.0 ± 0.3 0.9 ± 0.1 1.2 ± 0.2 0.8 ± 0.04 1.7 ± 0.6 2.8 ± 0.8 0.9 ± 0.1
Constriction Velocity (%.s−1) 0.8 ± 0.02 5.0 ± 1.0 2.6 ± 0.3 11.1 ± 1.0 3.6 ± 0.8 1.7 ± 0.4 9.8 ± 1.2
1.8 s PIPR (%) 3.9 ± 0.7 0.1 ± 0.1 2.1 ± 0.5 2.1 ± 1.0 3.9 ± 0.7 4.1 ± 0.6 5.4 ± 0.6
Pupil metrics
5,000 ms pulse
Mel
(17%)*
L+M (10%) S
(10%)
L–M (6%) L+M
+
Mel
S
+
Mel
L–M
+
Mel
PLR Latency (ms) 612.5 ± 42.7 395.8 ± 46.3 445.8 ± 114.3 366.7 ± 9.6 379.2 ± 48.8 425.0 ± 62.9 341.7 ± 22.1
Peak Constriction Amplitude (%) 2.1 ± 0.2 3.1 ± 0.2 2.1 ± 0.3 7.0 ± 1.0 3.4 ± 0.2 2.5 ± 0.4 7.6 ± 0.7
Time to Peak (s) 0.9 ± 0.1 0.8 ± 0.03 0.9 ± 0.1 0.7 ± 0.01 0.9 ± 0.1 0.8 ± 0.1 0.8 ± 0.03
Constriction Velocity (%.s−1) 2.3 ± 0.4 4.1 ± 0.3 2.6 ± 0.6 9.9 ± 1.6 4.1 ± 0.5 3.0 ± 0.3 10.0 ± 1.3
1.8 s PIPR (%) 1.9 ± 0.1 0.3 ± 0.2 1.1 ± 0.3 0.6 ± 0.1 2.1 ± 0.1 2.4 ± 0.4 3.0 ± 0.3

The units for the metrics and Weber contrasts of the photoreceptor isolating conditions are given in the parentheses. Mel, melanopsin; PIPR, post-illumination pupil response.

*

Measured with temporal white noise (without penumbral cones).