Life isnât a stream; itâs a movie. Like a projectionist stitching together reels without audiences noticing, the brain collects the frames of reality sent to it and weaves them into one apparently seamless whole. The human frame rate shows us life at a certain speed, but life can be much faster or slower if we change it.
Have you ever been next to a moving car with wheels that looked like they were going backwards? Blame the human frame rate. According to research that determined how many light flashes per second the human brain can discern as separate before they look like a steady beam, scientists have found that for us, life is a movie running at around 60 frames per second. When a carâs wheel is spinning fast enough to simulate that frame rate, it can look like the wheels spin backwards. Whatâs happening is that the wheelâs position is only slightly behind where it was when the last frame was stitched together by your brain.
If you get a carâs wheel spinning in sync with the frame rate, it can even look as though a car is gliding rather than rolling:
What would something like a car wheel spinning the wrong way look to other animals? Human experience is like a stuttering video game trying to render too much to a golden-mantled ground squirrelâit sees the world at 120 frames per second. But at least humans don’t see life like stop-motion animation. âBooralana tricarinata, a deep-sea cousin of the roly-poly, boasts the lowest known C.F.F. (Critical Flicker Frequency): four flashes a second. Its view of life may be something like a fitful and grainy stop-motion film,â writes Ferris Jabr in The New Yorker.
You can actually force illusions based on the human frame rate if you alter the frequency that light hits our eyes. The water fountain below is indeed flowing straight down the whole time, but a precisely tuned strobe light can make it appear as though it flows upwards, and in perfect droplets:
The best way to see the world at a different speed is to change how fast the brain can put frames together. Since we canât exactly go poking around in people’s brains, using a mechanical eyeâa camera with a variable shutter speedâis the next best thing. By matching a cameraâs shutter speed to the rotation of a helicopterâs rotors, for example, you can make it look as if some giant, invisible child is playing with a toy:
And if you have a camera that samples images top-to-bottom, instead of all at once, you can get an incredible ârolling shutter effectâ (top image) that gives airplane propeller blades bizarre orientations and movements.
You can also visualize synced frame rates by sending a certain frequency of sound through flowing water and matching that frequency with a cameraâs shutter. Water can stand still, move in slow motion, and even flow backwards all while moving just as physics would dictate.
Ferris Bueller famously said, âLife moves pretty fast. If you don’t stop and look around once in a while, you could miss it.â Philosophically, thatâs not bad advice. But the scientific truth is that life moves only as fast as you can perceive it. No matter how much you look around, there are species that get to see much more or much less life. Iâm not sure how that fact works philosophically though.
—
IMAGE:
Rolling Shutter Propeller by Kyle Wood
Kyle Hill is the Chief Science Officer of the Nerdist Enterprise. Follow the continued geekery on Twitter @Sci_Phile.
This article is misleading at most. It covers the framerate of the human EYE. Not the brain. Our brains are capable of processing images and information at faster-than-light speeds, allowing for a framerate of over 1,000,000 fps. This is what enables people to have dreams that apparently lay hours, when in reality, only a few minutes have passed.
So if the Human Brain’s frame rate is 60fps does it matter if my TV’s frame rate 120???
Hey man; YOUR brain has a frame rate and IT’S pretty slow. Boom!
shots fired