After seeing 120/140 Hz monitors, You will be intrigued about the frequency that human eyes can perceive and if this frequency isn’t the reason for your eyestrain and headaches.
Human eyes are unable to perceive beyond 60Hz. If you have this knowledge, you might be wondering why 120/140Hz monitors and why are considered to be the most effective.
When you finish this article, you’ll be able to understand why monitors are designed using higher Hz than humans can see.
How our brains take in reality
- The first step is to know how you can see images first.
- The cornea is illuminated towards the front of your eye until it reaches the lens.
- The lens then directs the light to a specific point located at the rear of your eye, a point known as the retina.
- The photoreceptor cells inside your eyes convert sunlight into electric signals, and the cells called cones and rods detect movement.
- The optic nerve sends electrical signals to the brain, which converts them into images.
What speed of movement is the human eye able to detect?
Eyes don’t move at a special rate, but the method by which the visual stimulus is measured in terms of frames per second (fps). The optical signals in our surroundings are moving at a specific frequency, and our eyes absorb this information at a particular rate of perception. Many experts have a hard finding a consensus on an exact number, but the bottom line is that most humans can see between 30-60 frames per second.
There are two schools of thought about visual perception. One of them is that our eyes can’t process visual information more than 60 frames per second. Another view is that it might be possible for some people to perceive beyond the 60 frames per second.
How do we humans perceive reality?
Let’s say we want to look at the human processing information visually. In this case, we might want to take a moment to analyze how humans process data, analyze it and interpret information from their environment. We’re akin to the living computer. The brains of our bodies or RAM aid us in processing information we receive from our surroundings. We have a variety of sources for data, including our eyes and skin. This is how we transfer information to our memory center. This is like using the flash drive to share information on your computer. What is the process?
Step 1. The eyes are opened, as well as our input devices, and light is reflected through the cornea to the lens.
Step 2. The lens functions are similar to a mirror that focuses the light inside the eye, the internal monitor, or the screen. This is known as the retina.
Step 3. The photoreceptors in the rear of your eyes convert photons to electrical signals. Similar to the way data is being converted into 1s and 0s by computers. Other cells, cones, and rods can detect movements or motion.
The optic nerve sends electrical signals to the brain, which feed it with information; it’s like connecting to the web, and your cable transmits 1s and 0s of information to your computer. The data is then processed and displayed on your screen.
Effects of Refresh and Frame Rate on the Eyes
It is essential to know that eyes sense light and motion flash differently and that various eyes are responsible for this. The majority of people notice light flickering at 50-60 Hz. This means that the fast-moving light may cause a black cloud to appear for a second or two.
Motion with a higher FPS decreases the effect of black clouds because it shifts frames faster, which results in less flicker. Therefore, when playing video games or doing any other task involving a lot of movement, a high refresh rate is recommended.
However, no matter how high the refresh rate is, it is still necessary for the eye to adjust and refocus when the frame is at any time. If this is repeated for an extended period, it could cause eye injury.
If you’re a player or are on the computer for long hours could do the following:
- Plan for adequate lighting. If the light from your computer is the only source of light within the room, the reflection and glare are focused on your eyes. The intensity of light will impact the eyes.
- Set your computer’s brightness to the desired level. The intelligence of your computer should be similar to that of the environment. If the light in your room is dim, lower your brightness accordingly, or if not the lighting is dim, your intelligence should be at a high level.
Do you have a human-eye FPS test?
Sure, researchers show a rapid sequence of images to people and ask for their responses to find out what they could identify.
This is what researchers from the study in 2014 did to find out that the brain could process images that your eyes could only see at 13 milliseconds.
Ophthalmologists can study the eye’s movements, called intraocular actions using high-speed cinematography to understand how fast your eyes operate.
Today smartphones can record those delicate movements with slow-motion video. This technology allows phones to capture more photos in less time.
As technology develops, scientists will continue to create new methods of assessing what the eyes are capable of seeing.
How do we compare our vision with that of animals?
Many affirm that animals see better than us. However, this isn’t the case. Human vision is higher than the eyes of many species, tiny ones.
Therefore, it’s unnecessary to think that your house cat is experiencing higher resolution than you. You can see the details far better than your pet, pet, or goldfish.
However, some species with excellent visual acuity are superior to ours. These include birds of prey that can see up to 140 frames per second.
Conclusion
Eyes cannot perceive beyond 60 Hz. However, it is essential to make your monitor display more significant than 60 Hz so that even when the signal goes out during transmission, your brain will be able to create the image.