Quote Originally Posted by Solus Corvus View Post
It's not just about reflexes. No matter what you do there is going to be some input lag and network lag. Your brain compensates for this by predicting/extrapolating and a good player will also consciously employ anticipatory tactics. If you can reduce the input (and network) lag then your brain doesn't have to anticipate as far in advance and long gaming sessions are less mentally fatiguing.

Another point is that motion in 120hz appears smoother and you can also enable vsync to eliminate tearing while still incurring a smaller input lag hit.
Agreed but how do you determine what constitutes a noticeable lag? When someone says that a monitor with a 15ms input lag is too slow it would be nice to see some actual evidence that human beings can benefit from less input lag when playing a video game on a 2D screen. So far the only evidence offered is that someone claims they can see/react faster than other people - a claim with is a bit useless without support.

Does anyone know what the "input lag" is on our eyes? i.e the time it takes for our brains to process and resolve the information our eyes receive?

@StarGazer, go troll someone/somewhere else plz.