Preface
In the world around us, the effect of visual presentations speaks for itself. But the human visual system is always curious, how does it work, and does everyone see things the same?
It also reminds us of many mysteries, such as the sudden slowdown when crossing the street, and the illusion of seeing splashing water when watching a waterfall.
To answer these questions, researchers at Trinity College Dublin have launched a new study that explores the differences in how individuals perceive the speed of light flashing.
1. High frame rate creatures
In a research paper recently published in PLoS presents the findings of Kevin Mitchell, associate professor of developmental neurobiology at Trinity College Dublin, PhD student Clinton Hallam, and numerous collaborators.
The study not only aims to investigate the frequency at which visual test results approach or exceed the frequency of light stimuli, commonly known as the "frame rate", known as the "critical flicker fusion threshold".
This research represents a new discussion of the term human visual system engineering, especially by testing and discovering how the human visual system works.
"Our perception of the world is an interesting topic because it's fundamental to how we understand reality and how we interact with each other," Mitchell explains. ”
"While we can experience this every day, because we have to rely on our own subjective experience, we can mistakenly assume that everyone experiences the world in the same way. ”
He went on to point out: "We have studied this in the lab, which helps clarify that, just like color blindness, this physiological difference can affect our perception of the world. But we're finding more variations, and the way people see the world is not just influenced by this life experience, it's also physiologically influenced, that is, our brains control our perception of the world. ”
This is a new research model, which attempts to start from the visual function, and for the first time proposed the concept of "high frame rate" creatures, while most of the previous research has focused on the direction of matter and spatial perception, which is the so-called "galactic brain" model.
Of course, there are still more mysteries in the brain, waiting for researchers to dig and explore.
The team conducted a critical flicker fusion test in the lab, in which people were asked to observe different frequencies of light stimuli, and then the researchers slowly increased the frequency to allow the subjects to determine the frequency as accurately as possible.
This test determines how often a person's brain is able to receive light stimulation, which is the most popular "large frame" test.
The participants were 88 volunteers from different backgrounds, from which 47 volunteers were selected as the youth group, and 41 volunteers aged 41 to 77 were placed in the senior group.
The test results showed that all the participants showed some differences, and there were significant changes in different frequency stimuli, which also reflected that different people have different perceptions of light flickering.
The researchers analyzed these results to derive what is known as a high frame rate creature in terms of light stimulation.
The results of the experiment showed that these subjects were able to perceive 60 frames per second of light stimulation, while normal or low-frame-rate organisms could only perceive 35 frames of light stimulation.
Therefore, it can be seen that high frame rate organisms can easily perceive higher frequency stimuli, and can also make more accurate judgments in more subtle aspects.
It is secondary to the perception of various speeds in people's lives, which will be affected by the individual's retinal perception to a certain extent.
In the course of studying high-frame-rate organisms, the researchers found that this ability is not static, and while there seems to be differences in the frequency of light stimuli that people obtain at different times, the variation in this ability is relatively small and not at a high level.
This means that the abilities of high-frame-rate organisms are more genetically biased than the result of changes in people's environment or acquired factors.
2. The advantages of high frame rates in visual activities
Now that we've learned about high frame rate creatures, it's time to understand what kind of advantages this talent can bring to people.
Mitchell and Haarlem also discovered that the abilities of high-frame-rate creatures can also be linked to the high-speed and visual activities of their lives.
High frame rate creatures probably won't perform better in normal everyday life, but this advantage is especially evident if this ability can be used in areas that require fast movement or rapid visual changes.
Mitchell and Haarlem analyzed: "High frame rate creatures have special performances in different areas of life. ”
"For example, when observing fast-moving objects or situations where you need to quickly judge different visual scenes, high-frame-rate creatures tend to have more accurate judgments than the average person. ”
In addition, the researchers said: "In video games, characters and props move rapidly at different times, so high frame rate creatures tend to have a higher advantage in measuring angles, passing obstacles, and accurately capturing information for the player's visual processing, especially in high-level competitive games." ”
In other words, in games with high frame rate requirements, such as online games, high frame rate creatures can inadvertently obtain more information, and quickly judge and operate accurately, as well as more stable picture performance, which will be more competitive for them.
As a result, both Mitchell and Haarlem say that what they call a high-frame-rate creature is the ability to visually get information faster than others, and to accurately judge and act on that information quickly, just like a player would have a plug-in with him when playing a game.
But the difference is that this high frame rate creature is not something that most people can be trained to acquire, but it is very different at the genetic level.
Therefore, in the course of their experiments, both Mitchell and Haarlem believe that high-frame-rate organisms are similar to the product of human evolutionary processes, that is, the embodiment of the evolutionary adaptability of the individuals concerned. It is the product of other evolutionary forces, such as the rapid standing and walking process, or the efficient processing of sensory stimuli such as light and sound.
The research team believes that such discoveries may lead to new understanding of the function of the human brain and nervous system, and may also present new challenges and opportunities in the fields of science and medicine.
While more research and confirmation is yet to be done, the discovery of high-frame-rate organisms will undoubtedly shed new light on how the visual system and human perception work.
Third, the author thinks
In nature, every living thing adapts to its environment and evolutionary processes, and high frame rates are one of the manifestations of adaptation.
In terms of strengths, high frame rate creatures will definitely have an advantage when it comes to the performance of certain high refresh rate instruments, and this special ability to stimulate frame rates.
For human beings, every evolutionary trait and capacity is part of our common love, and scientific exploration is also a helping thing for us to move forward.
The study of high frame rate capabilities with cutting-edge technology will undoubtedly improve everyone's understanding of the visual system, the study of perception speed, and also allow us to better understand the differences in human vision, so as to carry out personalized treatment in science.