“The human eye can only see a certain number of frames per second.”

The idea that the human eye can only see a limited number of "frames per second" is a persistent misconception, often cited as 24, 30, or 60 FPS. This myth likely originated from the technical limitations and historical standards of early film and display technologies. Movies, for instance, have traditionally been filmed and projected at 24 frames per second because it was found to be the minimum frame rate needed for motion to appear continuous to the human eye, and it was also an economical choice for studios. As technology advanced, the 60 Hz refresh rate of many older televisions and computer monitors also contributed to the belief that our visual perception "caps out" at 60 FPS.

However, the human visual system doesn't operate like a camera, capturing distinct, discrete frames. Instead, our eyes and brain process a continuous stream of visual information, much like an analog signal. Our photoreceptors constantly gather light, transmitting electrochemical signals to the visual cortex without any "shutter" closing between frames. This continuous processing means there isn't a fixed "frame rate" for human vision. While we might not consciously identify individual images flashed for a millisecond, our brains absolutely perceive the increased smoothness and responsiveness of higher refresh rates, especially in dynamic situations like gaming.

Scientific evidence demonstrates that we can detect visual changes at speeds far exceeding the commonly cited limits. Studies have shown that the brain can process images seen for as little as 13 milliseconds, which translates to approximately 75 frames per second for complex image recognition. Furthermore, the human eye can detect flicker at rates much higher than 60 Hz, with some individuals even perceiving differences at 120 Hz or more. The US Air Force, for example, conducted research revealing that pilots could effectively interpret visual information at speeds significantly higher than 60 or 90 FPS, with some tests suggesting the ability to perceive single images flashed at 1/220th of a second, and even up to 1/1000th of a second for flashes of light. This highlights our remarkable adaptability and the continuous nature of our visual perception, which is far more sophisticated than a simple "frames per second" measurement suggests.