Gadgetory

the answer is no the human eye does not see in frames per second but the question itself has to do more with the human brain than it does the eye whereas cameras stitched together X amount of frames and strain information based on individual still images the human eye perceives and translates reality at a constant and uninterrupted rate what we do know is that the figurative iam and I can be trained to perceive extra information in said additional frames but the opposite is also true try out this test what you're about to see is 30 seconds of alternating red and blue dots the rate at which of these dots alternate will depend largely on the speed to which you set this video so when you see the countdown I'm about to show if you're on a computer click the Settings icon below this frame and then change the speed two times to if you're already playing this video at 720p or 1080p the video should be at 60fps if we multiply that speed by 2 which should simulate sort of depending on how YouTube compresses this video 120 frames per second are you ready here we go now depending on how trained your eyes are you either saw clear and distinct changes between red and blue shades of the dot or you saw a constant stream of just a purple shade while at times to speed if that was the case and I suggest lowering that speed to 1.5 times maybe 1 times until you can see that distinct change between the colors that will give you and of a relative comparison between your eyes ability to discern frames and someone else's now I know a bunch of you are eager to jump into the comments and declare I saw both red and blue but be honest with yourself and regardless this still proves a point some of your brains blended both colors and some of yours didn't is it's the former then it proves that the human eye doesn't see in frames you see even if in this case you were able to discern the individual colors at 120 hypothetical frames per second at some point let's say a thousand fps just for the heck of it those frames would just blend together essentially into one solid color red and blue make purple that's all the proof we need about the human eye cognition and frame rates if we did see in frames per second and then our brains would systematically select specific frames to extract from the test in which case no blending would occur think of it the same way a monitor reacts to a graphics card if the card is processing and sending 120 frames to the monitor in question which itself is only refreshing 60 times a second ie 60 Hertz then the monitor will extract 1 out of every 2 frames that received to display on-screen that selection process depends largely on the monitor the sync tactic in question topics unrelated to this one but if our eyes and brains did the same thing we wouldn't see a blending of images rather much like monitors we'd experience tearing and infrequent gaps in visual data which wouldn't serve any real-world purpose in fact it would hurt us so it's safe to assume it as we developed as a species our brains were trained to perceive fast-moving objects and not just blur them out it would be weird to see on a leopard kind of just frame by frame moving across our field of view that would serve no evolutionary purpose whatsoever but our bodies have adapted in other ways as well while we ourselves may not typically move very fast our heads can twist on a dime and our eyes have adjusted accordingly don't give yourself whiplash but swing your head from one side to the other did you do it he didn't do it I'm really stupid up here during this interval your eyes likely locked unto two distinct points where you were looking before you swung your head and where you were looking immediately after it stopped swinging our eyes tend to do this subconsciously and for a good reason keeps us from getting dizzy but if we roll their eyes back and forth very quickly without moving our heads the space in between remains in our peripherals which is kind of counterintuitive because our eyes are moving across that central plane at some point our brains here are doing us a solid but do not mistake this for frame skipping nervous impulses coming to and from our occipital lobes are not being interrupted rather our brains are replacing those quick flashes of blur with what we see just before and just after the swing of our eyes it's called saccadic masking and it's brilliant devolution so when it comes to the frame rate you see when gaming asking how many frames can my eye see is the wrong question of course by that definition we can see an infinite number of frames photons are not being interrupted as I enter our optical nerves our optical nerves themselves are sending information and constant and uninterrupted pulses as well so there's no break up and the data transfer instead here's the question you should be asking at what point is my brain no longer fooled by the frame rate you see FPS perception depends on a few factors object motion is a big 112 fps that's pretty low rate will look pretty damn smooth at the object we're talking about is a snail or extremely viscous lava you get the point this is why some sports and action movie channels will opt for 720p at 60 FPS versus 1080p at 30 fast-moving objects benefit from a higher frame rate there's really nothing to argue about here and that's why it makes sense and is such a big deal in the gaming industry particularly in first-person shooters a higher frame rate gives the added benefit of smoother and more accurate turns and twists among other things and the added realism in motion allows our brains to focus on the more important task at hand you guys know what I'm talking about if you don't believe me try gaming at 120 FPS and then immediately jump back to 30 fps you will wish you hadn't without a doubt the differences between 30 60 and 120 FPS are apparent do not let a console gamer tell you otherwise but as the frame rate continues to double our ability to discern weekends for in two this year 30 and 60 FPS movement is rather apparent assuming YouTube compression hasn't watched the 2 by this point but in the case of 60 to 120 fps even though double the frames have been added to this round instead of 30 to 60 which is only a 30 Delta it's 60 to 120 which is a 60 Delta the differences are subdued and 120 to 240 this is the same story only intensified but let's shift positions here for a second I really like studying brainwave activity how that effects are a visual auditory just natural perception of reality and several studies have been conducted and an effort to explain these cognitive phenomena one of my favorite involves electroencephalography EEG to monitor brainwave stimuli from the occipital lobe since optical nerves are a part of the central nervous system their electrical impulses can be charted as functions of frequency various testing methodologies resulted in peak beta wave it's waves of normal human consciousness responses corresponding to a range of roughly 25 to 60 fps and this assumes outside stimuli are suppressed but when physical activity Rises for example if you go for a run this frequency increases resulting in a heightened sense of awareness and perception you can actually feel this change by the way pick a song that's pretty upbeat an X along actually works listen to the song when you're at rest when alpha waves operating between 7 and 13 pulses become prevalent in the brain best to do this part right after you wake up then try your best to compare that rhythm to the same rhythm after a long exhausting workout chances are that upbeat quality will now feel a bit slower as though the song has been dragged out a bit longer individual beats are easier to discern and suddenly nothing in the song seems to be moving very fast there's your cue you've just effectively increased your brain's sampling rate the rate at which your brain processes information so human cognition is largely dependent on outside stimuli and while competitive first-person shooters are without a doubt intensive physical exhaustion is usually a non-issue though I have seen a few sweat in the heat of battle thus lower frame rates aren't as apparent however and I personally vouch for the science by the way do something that's exhaustive run a mile and I'll do some jumping jacks whatever gets your heart rate up whatever gets the blood flowing through your brain faster and then jump back into the game again I'm willing to bet that you'll notice the subtle differences in frame rates beta levels peak perception becomes especially sensitive and subtle changes in everything from simple rhythms to time gaps between artificial frames become more apparent but remember it's not because we can see in frames per second we aren't designed that way want more proof and grab a strobe light that will drive you crazy our brains are difficult to fool especially when our senses are heightened and depending on how trained yours is a higher end game framerate may be necessary to keep it fooled now at this point if you're still watching the video I want to emphasize that much of what we've talked about here is not definitive science there is still so much we do not understand about how the brain perceives reality in fact you'll need several optometrists and neurologists who will debate three years about what we've just talked about because there's still so much we do not know it is still cool to talk about however because a lot of it has to do with what we see on our monitors when we're playing video games it's actually pretty cool how that stuff tends to overlap with stuff in the tech industry if you liked this video be sure to give it a thumbs up thumbs down for the opposite click and subscribe but if you haven't already and I will catch you in the next video this is science studio thanks for living with this you