2014) found different selections for real protanopes and real deuteranopes.
R] values over one for real protanopes and the pseudoachromatic greens (they see such stimuli lighter than do common observers) but [L.
R] values similar to those provided by real protanopes but not by real deuteranopes.
Out of these 8 subjects, 5 subjects were deuteranope and 3 subjects were protanope.
Age in Years Protanope Deuteranope Tritonope 30-40 -- -- 3 41-50 2 1 6 51-60 -- 1 5 61-70 2 2 8
The differences are statistically significant, except for normal participants between G and Y signals, for deuteranomals between G and Y signals, for deuteranopes between R and Y signals, for protanomals for Y signals with both R and G signals, and for protanopes for Y signals with both R and G signals.
However, protanopes showed increases in response times of 35% for R and 53% for Y.
Experiment 4 was designed to be performed by protanopes, an observer type with a pattern of spectral sensitivities that is the opposite of that of the tritanomalous: higher sensitivity to the left portion of the spectrum but lower sensitivity to the right portion.
Because of their genetic origin (Birch, 1993), protanopes offer two important advantages for research.
22) All deuteranopes and 96% of protanopes failed the test.
1) Mean position of the center cap Range Protanopes 17 15-26 64 58-68 Deuteranopes 15 12-17 58 53-60 Tritanopes 5 4-6 45.
The neutral points for deuteranopes, protanopes
and tritanopes are around 498nm, 492nm and 569nm respectively.