Des Illusions Malicieuses Qui Perturberont Votre Esprit

Sympa

Préparez-vous pour un voyage époustouflant ! Notre vidéo "Des illusions malicieuses qui perturberont votre esprit" va vous faire douter de tout ce que vous regardez. Des formes impossibles, des couleurs qui ne sont pas réellement là : ces illusions vont chambouler votre cerveau de la façon la plus amusante ! Pensez-vous pouvoir faire confiance à vos yeux ? Appuyez sur lecture et préparez-vous à être émerveillé par des images vraiment hallucinantes ! Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/ Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ---------------------------------------------------------------------------------------- Si tu en veux encore plus, fais un tour ici: http://sympa-sympa.com

Transcript

00:00Have you ever noticed something while saying to yourself,

00:02but what the hell am I looking at?

00:04Well, you are not alone.

00:06Optical illusions are these little malicious tricks that confuse our brain

00:10and make us see things that are not really there.

00:12Today, we are going to study some of them.

00:15Here is the first one.

00:16All these plates are upside down.

00:18But are they really?

00:20Find the one that is in the right direction.

00:22Well, well, let me guess.

00:25Once you have found it,

00:27all the other plates have turned in the right direction, haven't they?

00:30No, it's not magic.

00:32It's just your eyes that are deceiving you.

00:36Let's continue.

00:37Concentrate all your attention on this thing.

00:40Is your mind already confused?

00:44So, what exactly is the illusion here?

00:47This is called the opening problem.

00:49Your eyes may have thought that the lines were moving horizontally and vertically near the squares.

00:55Almost as if it were flashing.

00:57But if you keep your attention on the gray squares,

00:59you will notice that the background goes down uniformly.

01:04Hmm, the failures.

01:06Are you for the black team, for the white team,

01:08or do you think that the pieces are all the same color?

01:12I know it's going to sound confusing,

01:14but all the pieces are exactly the same color.

01:18You don't believe me?

01:19Let's remove the background.

01:21Is it better now?

01:22The pieces of the top row are the same as those of the bottom row.

01:26Your mind is a magnificent machine,

01:28but so influential.

01:32Believe it or not,

01:33this optical illusion can tell you if it is safe for you to drive in the rain.

01:38Look at this image,

01:39and tell me if you can spot the hidden number sequence.

01:42Ready?

01:43Go ahead.

01:46Did you find 3, 452, 839?

01:49If so,

01:50your contrast sensitivity is at the top.

01:53Contrast sensitivity is what allows you to clearly see the contours of small objects.

01:58If this ability is not well regulated in your system,

02:01it is preferable to avoid driving in the rain or in the fog.

02:06This illusion drives people crazy.

02:08Take a look at this image.

02:10Do you see squares?

02:11Keep looking.

02:13We'll be back in a moment.

02:17If you saw anything other than squares,

02:19congratulations,

02:20you are one of the few lucky ones.

02:22This illusion is sensational on the Internet,

02:24because some people can spot 16 hidden circles instead of these hollow squares,

02:29also known as boxes.

02:31This is the illusion of boxes,

02:33finalist of the contest for the best illusion of 2006.

02:36It is a classic example of ambiguous stimuli.

02:39The image gives our brain visual information,

02:42which can be interpreted in multiple ways.

02:44The illusion of boxes forces us to choose between contradictory interpretations,

02:48and it's totally breathtaking.

02:50But there is one more thing.

02:52The way your brain will interpret the stimulus depends on your past personal experiences.

02:57At first, we will see rectangles because it is part of our daily life.

03:01But according to your point of view,

03:03you will quickly start to see circles.

03:07Look at this image for a moment and tell us how many bars you can count.

03:14This illusion has left Internet users perplexed.

03:17Some people have counted up to 11 bars,

03:19but most find 8 or 7.

03:22The creator of this clever image says that there are actually only 6 complete bars.

03:27Try to count from top to bottom and you will see that the upper bars are there.

03:31But when you reach the 6th bar, things start to get messy.

03:35It's because the last two bars are incomplete.

03:37When you try to count them, they seem to multiply,

03:41leaving you totally confused.

03:42If you slide the pointer of your mouse along the 7th and 8th bars,

03:46you will see that they are incomplete.

03:48We placed them there to confuse you.

03:52For this next experiment, you have to fix this red dot for about 10 seconds.

03:56I'll tell you when it's done, don't worry.

03:59At first, your eyes will see the drawing of a gray city around the dot.

04:15But how is this possible?

04:16Even after the image has gone black and white,

04:19our brain is still able to perceive the original colors.

04:22This is an example of what is called a remnant image.

04:25If we look at the fixed image of such or such object for a moment

04:28and then make it go black and white,

04:31our brain is still trying to guess its colors.

04:35How many different scenes can you spot in this image?

04:383? 4?

04:39Do your best, I trust you.

04:43There are only two.

04:44You should be able to see the chalice in the first scene.

04:47And then, when you change focus,

04:50you should be able to spot the profile of two faces, with a white background.

04:56Let's move on to the next one.

04:57I'm going to ask you to fix the eye of this parakeet for 15 seconds.

05:00Keep fixing it, as we did with the last image.

05:04You are about to see another excellent example of a remnant image.

05:203. 2. 1.

05:23And close your eyes.

05:24Do you still see a red parakeet?

05:27Isn't it incredible that,

05:29although this parakeet is in black and white,

05:31you have the impression of seeing the color red?

05:33Once again, it is simply your brain that is trying to guess the color of the object.

05:40Another one.

05:41Fix the cross in the middle of this image for 10 seconds.

05:44Let's go.

05:58All the colors of the image have disappeared, haven't they?

06:00And you could only see one white page?

06:03Strangely, your brain erases all the nuanced colors,

06:06and leaves you in front of a white screen.

06:10This one is quite bizarre.

06:12Fix this group of little good men trying to escape an imaginary threat.

06:16Can you see what the illusion is here?

06:21It took me a while to understand it too.

06:24The illusion is that it seems that these little good men are moving forward.

06:28It looks like they are leaving the scene, one by one.

06:31But in reality, they are immobile.

06:34This illusion is created by the change of color in the foreground.

06:38Our brains are so easily confused.

06:43Ready for another illusion that will give you a lot of trouble?

06:47Open your eyes.

06:50It looks like a mobius strip.

06:52A kind of eternal loop, doesn't it?

06:54But if you look at it for a long time,

06:56you will see that it is a harmonious image.

06:59The three-dimensional view gives it the appearance of the symbol of infinity.

07:03I swear, my brain will need to go on vacation after this video.

07:09Well, take a look at these two images.

07:12Can you tell if the circle on the right is bigger than the circle on the left?

07:18Believe it or not, these two circles are exactly the same size.

07:22This illusion is known as the Ebbinghaus illusion.

07:25And it was discovered by a German physiologist in the early 1900s.

07:29We can assume that his name was Ebbinghaus.

07:32If our brain is mistaken when looking at this image,

07:35it is probably due to the size of the outer circles.

07:39Since the outer circles on the right are much larger,

07:42it gives the impression that it is on their side that the circle is smaller.

07:48Let's move on to the next illusion.

07:50Look closely at this image.

07:52Do not worry if small black dots begin to appear, it is part of the game.

07:57Do they also disappear?

07:58Yes, it is quite normal.

08:02This illusion is part of what is called the illusion of the flickering grid.

08:06Or the illusion of the Hermann grid.

08:08There are several examples on the internet.

08:10This illusion shows us one of the most important principles of human perception.

08:14You do not always see things as they really are.

08:17The retinal cells, in our eyes, act like light receivers.

08:22When a single receiver is lit,

08:24it perceives more light than when its colleagues are also lit.

08:28This prevents the activation of nearby receivers.

08:31With the illusion of the Hermann grid,

08:33the white lines are arranged so that there is more light around the intersections than along the lines themselves.

08:41Let's finish with one last little illusion.

08:43Here we have what looks like a gray bar moving from top to bottom on an orange background.

08:49But if you look at this little black dot,

08:51you can see the gray bar take a different color.

08:54What color did you see?

08:59Did you say blue? Yes, that's right, bravo!

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