How many frames per second does the human eye actually see?

While in the 90s and 2000s we were still happy when the game was launched at all, nowadays gamers are already at each other’s throats in chat streams, in the comments section of videos, or among the comments under the news, that thirty, 60 or 120 FPS makes more sense in the game?!

In the midst of the debate, many people argue that the eye can’t see the difference above 24fps anyway, or that movies are rendered at 24fps, while others swear there’s a huge gap between 60 and 120fps, too. But where is the truth? How many frames can the eye actually perceive?

How many frames can our eyes actually see?

This cannot be determined with a quick search, because the opinion of the scientific world is quite divided on this subject. There is still no exact answer to how many frames the human eye can process per second, but there is a great deal of agreement that whatever the answer is, it should be separated from the concepts and perceptions of video games.

There are several reasons for this, but the most important is that our eyes work a little differently than on a TV or monitor. but a little:

1. When we open our eyes, light enters the lens through the cornea.
2. This lens actually works like a mirror, directing light onto the retina at the back of the eye.
3. Here, photoreceptor cells convert the light into electrical signals – similar to a computer, which converts the data to be displayed into 1s and 0s.
4. Then, through the optic nerve, the signals reach the brain, which decodes them and displays them on our “monitor screen”.

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We see it plain and simple. So our eyes send information to the brain through light, and an image is generated from a combination of the two. However, most of the work is done by the brain, which is why, for example, what has already been confirmed in numerous studies is possible.

It is not only important how many frames/seconds the eye sees, but also what information the brain processes.

As I already said, there is no exact agreement on how many frames our eyes see, but most people agree that the average human eye (or retina) can perceive between about 30 and 60 frames. This value is usually given in hertz for TVs and monitors, as well as for light bulbs, and it shows how many times the screen updates the displayed image in one second.

approx person. Around/above 50 to 90 Hz, it no longer detects flicker, which we see as uniform light.

But that also determines the number of frames per second: 30Hz are capable of a maximum of 30fps, 60 by definition 60fps, while 120Hz monitors are already capable of 120fps. This means that our eyes “record” / “render” at a minimum of 30 frames and on average a maximum of 60 frames per second – but somewhat at a loss, because a lot of frames are lost in the process (this is called Critical Flicker Fusion).

On the other hand, scenes on the screen become almost continuous after 24 frames per second, below which the motion picture becomes fragmented. As we already know, the higher this number, the longer the movement continues,

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On the one hand, the question could be legitimate, what is the point of 60-120 FPS in games, if the eye can’t see it anyway?

Well, we have to look for the answer in the above, because our eyes are not the only organ that plays a role in vision. Although it is already more than 60 image updates per second, it is difficult for us to perceive much by eye, apart from that, the information that has passed through and may have been processed.

At least several studies have proven that, despite the number of “intangible” and “invisible” frames for us, our brain actually perceives everything. Of course, we will not know anything about this, since he is not able to display this flashed image for a very short time, but the information about it “secretly” reached the brain.

In 2014 an ophthalmologist, for example He did some experiments, during which he demonstrated through high-speed movie recordings that humans could decode even images that flashed for 13 milliseconds. That equates to roughly 72 frames per second — according to science, this is the upper limit of our vision and visual perception that can still be filtered.

Indeed, it is very difficult for a person to differentiate between more than 60 FPS, and there isn’t a lot of evidence, studies, or any kind of valid research that 120 FPS in online games significantly improves performance. On the other hand, the information we see has entered, even if we are unable to perceive it, so it is not at all excluded that the reactions of e-sportsmen are also superhuman for this very reason.

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via – ForbesAnd HealthlineAnd case keeperAnd PCGamer

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