- 2 days ago
Get ready to challenge your perception with these tricky optical illusions that will leave you questioning reality. These mind-bending visuals are designed to mess with your mind and test the limits of your brain!
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00:00Look at this image. There are actually 12 black dots here.
00:04Yes, they're all actually there, but your brain keeps deleting them from your peripheral vision when you're moving from dot
00:10to dot.
00:11This, combined with a blind spot relatively close to the middle of your field of view,
00:16slightly off to one side where the optic nerve enters your eye, makes you miss the dots.
00:21If you look at this illusion with just one eye, you might even see fewer dots at once.
00:30This black hole seems to be expanding toward you, doesn't it?
00:33But in reality, this image isn't moving at all.
00:36It's just your brain firing back what it thinks is happening in the picture and trying to predict what you'll
00:42see.
00:43Most people who look at this illusion see the shape growing in size.
00:47What about you? Comment below.
00:51The next optical illusion, a hypnotic circle, is more of a geometric trick.
00:56The white circles seem to be forming a circular shape rolling around the inside of the circumference of the larger
01:03red circle.
01:04But since it's an optical illusion, you've probably already figured out that it's not actually the case.
01:10The white circles are all moving in straight lines.
01:13But due to the timing, their movement creates the illusion that they're moving in a circle.
01:21We can probably say that this is a two-in-one optical illusion, with two mind-bogglers hidden in it.
01:28Depending on where you look, the dots can either seem to be changing color or vanish altogether.
01:33All you need to do is follow the light gray spot around or stare at the cross in the center
01:39for half a minute,
01:40and you'll experience the multiple illusions of this design.
02:08And you'll experience the multiple illusions of this design.
02:12This number-themed optical illusion left the internet completely baffled by asking how many numbers users could see.
02:20Indeed, at first glance, there seems to be just three numbers.
02:23But the harder you stare and the closer you get to the screen, the more numbers start to appear.
02:29In total, there are seven numbers in this image.
02:32Write in the comments what numbers those are.
02:38The rotating horse optical illusion makes everyone confused.
02:42The question is, which way is the horse turning?
02:45Even though lots of internet users have theorized about the correct answer,
02:49no one still has any idea which is the right one.
02:56Oh, this next one is the top-tier player in the world of optical illusions.
03:00You're probably familiar with Van Gogh's Starry Night,
03:04but with the help of a little trick, you can bring the painting to life.
03:07First, stare at this rotating image above for a while.
03:27Now, move your eyes to the painting below.
03:30Voila!
03:31The famous picture comes to life in a flurry of swirls and movement.
03:35It's an awesome example of how our brains can twist an image
03:39based on how our eyes adjust to what they see.
03:44Look at this moving circle for a while.
03:47It seems to change its color while traveling from left to right against a gradient background.
03:51Well, in reality, it doesn't.
03:54The circle always has the same shade.
03:56All that changes is the color of the background you see the circle against.
04:01The illusion works because your brain perceives colors differently depending on what surrounds them.
04:06Wow!
04:07I do love an optical illusion with a scientific explanation.
04:12Here's another example of an optical illusion we can't get enough of.
04:17The one where objects seem to be moving when they're actually completely still.
04:22Like this spinning vortex optical illusion.
04:25You can also call such illusions physiological optical illusions
04:30since they're caused by the overstimulation of your brain's senses
04:34after your eyes see too much color, movement, light, or dimensions.
04:39All this overabundance of information prevents the brain from processing the image correctly.
04:45This picture with its purple and yellow vortex-like design is kind of hypnotic.
04:51But I promise, it's not a gif or a video.
04:53It's a totally still image.
04:56The combination of different patterns, levels, and colors
04:59trick your mind into believing the image is moving
05:01when your eyes are wandering over the design.
05:04If you concentrate on the very center of the image,
05:08you'll make all the movement stop.
05:12This next moving optical illusion has a similar effect.
05:16The design uses the anomalous motion phenomenon.
05:19That's when part of a figure appears to move in a direction different from the rest
05:23to make it all look as if the image is moving,
05:26while in reality, it's a completely static picture.
05:29Your brain tricks your brain into thinking that the image is moving
05:33because of how the image hits your retinas at a particular location.
05:39How about playing some hide-and-seek?
05:41Look at this eye-crossing striped image.
05:44It springs to life when you shake your head vigorously from side to side.
05:48Ahem, should I remind you to do it carefully?
05:51When you start doing it, an image will begin to appear amongst the lines.
05:55So what kind of furry creature have you spotted?
05:58Share in the comments!
06:02This spinning disc's optical illusion is not a gif either.
06:06It's a still image, even though the wheels appear to be definitely turning in front of your eyes.
06:11This optical illusion works because of how your eyes process an image.
06:16They scan it repeatedly while autofocusing and adjusting.
06:20There's a way to make the movement stop, though.
06:22Just try to focus on one single wheel.
06:26Look at this twisted cord illusion.
06:29Do you see a spiral or a series of rings?
06:31For the first time, this optical illusion was described in 1908.
06:36It's called a false spiral.
06:38Since no matter what it looks like, in reality, it's a set of concentric striped rings.
06:47The next illusion has a fancy name.
06:49The Ebbinghaus illusion.
06:51Without giving yourself much time to think, answer, which red dot is larger, left or right?
06:57I bet you think that the circle on the right is larger.
07:00All because this illusion is based on relative size perception.
07:04Your brain makes a comparison of relative size based on the dots surrounding the circles.
07:10But in fact, the red circles in the center are the same size.
07:16One of the names this illusion has sounds like the cafe wall illusion.
07:21What do you notice about those rows upon rows of dark and light squares?
07:25Most likely, they seem to be sloping or even curved.
07:29But this is just a geometrical illusion.
07:31The lines dividing the rows are parallel and straight.
07:36What can you say about the relative lengths of these two red lines?
07:40For one thing, the arrowheads and arrow tails are likely to affect your perception of the line's lengths.
07:46But that's not all.
07:48In this image, the lines are extended to create a three-dimensional drawing of walls.
07:53In this structure, the red line in the far corner seems to be full wall height.
07:59And the closer red line seems to take up just part of the wall.
08:03But if you manage to see beyond these tricks, you'll realize that both red lines are actually the same length.
08:11Stare at the patterned circle in the center of this image and move your head a bit.
08:15You're likely to experience a weird feeling that the central circle moves separately from the rest of the picture.
08:21Because of the monocolored ring around the circle, your brain can't help but fall for an illusion of motion.
08:30These two eagles seem to be of different colors, right?
08:34Not really.
08:35What you observe is the bezeled effect.
08:37A color may appear different depending on its relation to adjacent colors.
08:41In other words, these bird silhouettes are the same shade of red.
08:45But after they get intersected with either yellow or blue bars, your eyes perceive their colors in a different way.
08:54What you see now is the color context illusion.
08:58So tell me, what color are the bobcat's eyes?
09:01The left is light teal and the right seems to be gray, right?
09:05It proves the point that the color surrounding an object can affect how our brain perceives the color of the
09:10object.
09:11In reality, both cats' eyes are exactly the same color of gray.
09:15But the red color around the left eye makes us perceive the eye as teal.
09:21Now, have you ever looked at something and thought, what am I even seeing?
09:25Well, you're not alone.
09:26Optical illusions are those sneaky little tricks that mess with our brains and make us see things that aren't really
09:32there.
09:33Today, we're diving into some of those.
09:36So here's the deal.
09:37All of these plates are turned upside down.
09:40Or are they?
09:41Find the one that's turned the right way.
09:45Aha!
09:46Let me guess.
09:47Once you've found it, all the other plates turned the right way up, didn't they?
09:51Nope, this isn't magic.
09:53Just your eyes fooling you.
09:56Moving on.
09:58Take your attention and place it on this thing right here.
10:01Is your mind already confused?
10:05So what exactly is the illusion that's happening here?
10:08This is called the aperture problem.
10:10Your eyes might have thought that the lines are moving horizontally and vertically near the squares.
10:15Almost like they're blinking.
10:17But if you keep your focus on the gray squares, you'll notice that the background is uniformly sliding down the
10:23seam.
10:25Hmm, chess.
10:27Is your team black, team white, or team these pieces are the same color?
10:33I know this will sound confusing, but all the pieces are the exact same color.
10:38Don't believe me?
10:39Let's take off the background.
10:41Better now?
10:42The pieces on the top row are the same as the bottom row.
10:46Your mind is one beautiful piece of machinery, but such a noob when it comes to expectations.
10:53Now, believe it or not, this optical illusion can tell you if it's safe for you to drive in the
10:58rain.
10:58Check out this image and see if you can spot the hidden sequence of numbers.
11:03Ready?
11:04Go!
11:06Did you come up with 3452839?
11:10If you did, your contrast sensitivity is top-notch.
11:15Contrast sensitivity is what allows you to see the outlines of small objects clearly.
11:19If this ability isn't well-tuned in your system, it's best to avoid driving in the rain or fog.
11:27This illusion is making people go crazy.
11:30Take a look at the image.
11:31Do you see squares?
11:33Keep staring, and we'll come back in a jiffy.
11:38If you saw something other than squares, congrats!
11:41You're part of the lucky few.
11:43This illusion is breaking the internet because some people can spot 16 hidden circles
11:48instead of those sunken squares, also known as coffers.
11:52Meet the Coffer Illusion, a finalist in the 2006 Best Illusion of the Year contest.
11:57It's a classic example of ambiguous stimuli, giving our brains visual info that can be interpreted in multiple ways.
12:05The Coffer Illusion makes us pick between competing interpretations, and it's totally mind-bending.
12:11There's an extra catch.
12:13The way your brain will interpret the stimulus depends on your personal past experiences.
12:18At first, we'll see rectangles because it's part of our daily life.
12:22But depending on your point of view, you'll quickly switch to seeing circles.
12:27Now, look at this image for a moment and tell us how many bars you can count.
12:35This illusion has left the internet scratching their heads.
12:38Some people have counted up to 11 bars, but most land on 8 or 7.
12:43The creator of this tricky image says there are actually only 6 complete bars.
12:48Try counting from the top down, and you'll see the upper bars are legit.
12:52But when you hit the 6th bar, things start getting fuzzy.
12:55That's because the last 2 bars are incomplete.
12:58When you try to count them, they seem to multiply, leaving you totally confused.
13:03If you trace your pointer down to the 7th and 8th bars, you'll see they're incomplete.
13:08They were just put there to mess with you.
13:12For this next experiment, you have to stare at this red dot for about 10 seconds.
13:18I'll tell you when it's over, don't worry.
13:20At first, your eyes will see a gray graphic city around the dot.
13:35Wow, what just happened?
13:37Even after the picture turns black and white, our brain is still able to perceive the original colors.
13:43This is an example of what's called an after image.
13:47After we fed our brain with a fixed image of something,
13:50when we turn it black and white, our brain is still trying to guess the colors of it.
13:55Now, how many different scenes can you spot in this image?
13:593?
13:594?
14:00Take your best guess.
14:01I trust you.
14:04Well, it's only 2.
14:05You should be able to see the chalice in the first scene.
14:08And then, when you change your focus,
14:10you should be able to spot the profile of two faces with a white background.
14:16Moving on to the next one.
14:18I'm going to ask you to stare at this parrot's eye for 15 seconds.
14:21Just keep staring at it, like we did with the last image.
14:25You're about to witness another great example of an after image.
14:413, 2, 1.
14:43And close your eyes.
14:45Can you still see a red parrot?
14:48Isn't it amazing that even though this parrot is black and white,
14:52you have the illusion of seeing the color red?
14:55Again, this is just your brain trying to guess the color of something.
15:00Let's try another one.
15:02Stare at the cross in the middle of this image for 10 seconds.
15:05Starting now.
15:18Did all of the colors from the image fade away and all you could see was a white page?
15:24Bizarrely, our brain just erases all the nuanced colors and leaves you with a white screen.
15:31This next one is pretty bizarre.
15:33Keep staring at this bunch of tiny dudes trying to escape some imaginary threat.
15:38Can you see what's the illusion here?
15:42Yeah, it took me a while to figure it out too.
15:44The illusion is that it looks like these little dudes are moving forward.
15:49It looks like they're leaving the scene one by one.
15:51But in reality, they are stationary.
15:55This illusion is created by the shifting colors on the foreground.
15:58Our brains are so easily tricked.
16:00My, my, my.
16:03Now, ready for another one that will ruin your brain for good?
16:07Take a look at this baby right here.
16:11It looks like a Mobius strip.
16:13Some kind of eternal loop, right?
16:15But if you stare at it long enough, you'll see that it's a wholesome image.
16:20The three-dimensional view makes it look like the infinity symbol looping around.
16:24I swear, my brain will need to take some time alone after this video.
16:29Okay, have a look at both images.
16:32Can you tell if the circle on the right is larger than the circle on the left?
16:39Believe it or not, these two circles are the exact same size.
16:43This illusion is known as the Ebbinghaus illusion,
16:46and it was discovered by a German physiologist in the early 1900s.
16:50We can assume that his name was Ebbinghaus.
16:53One of the possible explanations for why our brain glitches when looking at this image
16:57is due to the size of the external circles.
17:01Since the circles on the right are much bigger,
17:03they make the one on the right look smaller than the one on the left.
17:08Let's move on to the next illusion.
17:11Take a look at this image carefully.
17:13Don't worry if little black dots start appearing out of nowhere.
17:16That's part of the game.
17:17And are they disappearing too?
17:19Yep, that's totally normal.
17:22This illusion is part of something called the scintillating grid illusion,
17:26or the Hermann grid illusion.
17:28There are several examples of this one on the internet.
17:31This illusion shows us one of the most important principles of human perception.
17:35You don't always see things for what they really are.
17:38The retinal cells in our eyes act as light receptors.
17:42When only one receptor gets illuminated,
17:44it perceives more light than when its colleagues are also illuminated.
17:48This prevents the firing of nearby receptors.
17:51With the Hermann grid illusion,
17:53the white lines are arranged in such a way
17:55that there's more light around the intersections
17:57than along the lines themselves.
18:01Okay, let's wrap this up with one final illusion.
18:04We have what looks like a gray bar moving up and down on an orange background.
18:09But if you stare at this little black dot,
18:12you may see the gray bar turn into a different color.
18:15What color do you see?
18:19Did you say blue?
18:21Yep, that was it.
18:22Good for you.
18:23Oh!
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