Nice finding about the red/green delays, will give it a try, thanks for sharing the results!
I would have bet the green would be perceived first, because the eye sensitivity peak is at green AFAIK. Well, I would have lost.
For whatever reason, my peripheral vision is
very sensitive at blinking blue light. I noticed because they are some car alarms that have constantly blink a small blue LED. At night, I can spot from tens, maybe hundreds of meters the blinking blue light with the peripheral vision. The reflex is to instantly look at the blinking light, yet when I do that I see
nothing, unless I came much closer to the blinking blue light (meters away instead of tens of meters).
There are lots and lots of oddities and tricks played by the brain in order to make the best future prediction. If it were to wait until all information is collected and processed, it would be too late. By then, we would have already been eaten by the tiger.
Apart from being an attention test, that is also a good proof that we don't perceive what the reality
is, but what the mind
expect it to be. We are not aware about this, but what we perceive is a continuous
fabricated daydream guided by reality, instead of perceiving the reality.
I wonder what will be the reason to perceive the red faster (or why the green can be left to lag behind a little), or is it just because some unwanted side effect of how the retina works.