The question of how many frames per second (fps) the human eye can see is a subject of debate among scientists and researchers. There is no exact number that applies to all individuals, as the visual acuity of the human eye varies from person to person and depends on several factors, including age, lighting conditions, and the nature of the object being observed.
However, research suggests that the average person can perceive up to around 60 fps, although some individuals may be able to detect higher frame rates. The ability to detect motion also varies depending on the context and the type of motion being observed. For example, humans are better at detecting motion in the periphery of their vision than in the center, and they are more sensitive to motion in certain directions.
One study conducted by the Massachusetts Institute of Technology (MIT) found that humans can detect changes in visual stimuli at a rate of up to 13 times per second, which corresponds to a frame rate of around 13 fps. However, this is only for the detection of simple changes in stimuli, and the ability to perceive motion and more complex visual information is likely to be higher.
Another study published in the journal Current Biology found that the human eye can detect flicker rates of up to 90 Hz, which corresponds to a frame rate of around 90 fps. However, this ability is limited to certain conditions, such as when the flicker is high contrast and presented in the peripheral vision.
In summary, the exact number of fps that the human eye can see is difficult to determine, and varies depending on several factors. However, it is generally believed that the average person can perceive up to around 60 fps, with some individuals able to detect higher frame rates under certain conditions.