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 to 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 see.
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 red 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.
01:18We 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.
01:34All you need to do is follow the light gray spot around or stare at the cross in the center for half a minute,
01:40and you'll experience the multiple illusions of this design.
01:43And you'll experience the multiple illusions of this design.
02:10This 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.
02:30In total, there are seven numbers in this image.
02:33Write in the comments what numbers those are.
02:34The rotating horse optical illusion makes everyone confused.
02:43The question is, which way is the horse turning?
02:46Even though lots of internet users have theorized about the correct answer,
02:50no 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.
03:01You'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.
03:08First, stare at this rotating image above for a while.
03:27Now, move your eyes to the painting below.
03:29Voila!
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! I do love an optical illusion with a scientific explanation.
04:13Here's another example of an obstacle illusion we can't get enough of.
04:18The one where objects seem to be moving when they're actually completely still.
04:22Like this spinning vortex optical illusion.
04:26You 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.
05:05If you concentrate on the very center of the image,
05:08you'll make all the movement stop.
05:10This next moving optical illusion has a similar effect.
05:16The design uses the anomalous motion phenomenon.
05:20That'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.
05:30Your brain tricks your brain into thinking that the image is moving
05:33because of how the image hits your retinas at a particular location.
05:36How about playing some hide-and-seek?
05:42Look 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!
05:59This 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.
06:12This 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.
06:25Look at this twisted cord illusion.
06:29Do you see a spiral or a series of rings?
06:32For the first time, this optical illusion was described in 1908.
06:36It's called a false spiral.
06:39Since no matter what it looks like, in reality, it's a set of concentric striped rings.
06:44The next illusion has a fancy name.
06:50The Ebbinghaus illusion.
06:52Without 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.
07:05Your 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.
07:14One 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?
07:26Most 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 arrow heads and arrow tails are likely to affect your perception of the line's lengths.
07:47But that's not all.
07:48In this image, the lines are extended to create a three-dimensional drawing of walls.
07:54In 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.
08:02But 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.
08:22Because of the monocolored ring around the circle, your brain can't help but fall for an illusion of motion.
08:27These 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.
08:42In 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.
08:52What 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 object.
09:11In reality, both cat's eyes are exactly the same color of gray.
09:15But the red color around the left eye makes us perceive the eye as teal.
09:22Red color around the left eye is the same color.
09:28So the belief in the color identifies each other.
09:31If you see the mirror in your eyes, theween once has the same color of that.
09:34If i anh emphasize especially the height in your head, you're going to the right dive into a nail on theç ´ ini.
09:47Now when you move forward as a spiral, why do you mind?
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