Physiology of Motion

Cinematic of 24 fps vs Fast Action PC Game of 60 to 100 fps.

Physiology of Motion
FPS means frames per second, Medical Terminology, the brain can see individual frames if the are moving slow. If my memory of undergraduate physiology is right anything above 36 frames per second, the brain interpret as a motion .
There is also lag of election transfer from eye to the brain and back to the eye to see the picture of image. This is about milli seconds that depends on the length of the never. An impulse from toe of the toe takes longer than from the tip of the finger.
This called latency and these films guys have taken this word from medical terminology, I believe.
This comes from reeled motion pictures. The reel has to run at least 36 per second to emulate motion but there is latency of the film projector, too. When we take all these factors into consideration 24 frames per minute has no strain for the eye (brain does not feel pain but the eye does)
Even though one need 36 frames for motion for practical purposes for videos 24 frames per minute is barely enough considering the latency factor. Even though, light travel in space without scatter there is an element of scatter and that is why we see the sky as blue not white.
There is something called spectrum of energy, too and the eye uses certain part of the spectrum for (analog vs physiology) for visualization and we can distinguish only about 16 to 24 colours, whereas the computer can distinguish million colour shades. I am guy with colour blindness which I realized playing billiards on dim light (not in natural light) at night which is getting worse with age.
By the way, we had worse medical teachers of that time, who were learning physiology and anatomy with us. They had gone abroad had got PhDs and they were meant to train them in methodology in a science and not teaching. Our teachers came from Carlo Fonseka Era but Osmund Jayaratne was my fovourite with his brilliant exposition of matters about clouds and lightening and many other topics in physics.
I loved physics and hated medicine.
Let me come to digital facts.
Digital technology of current era exploits human physiological facts and human weaknesses and use high frame rates of video games to entice people including an old guy like me.
It is an illusion of motion.
I will leave at that.