I said "same" because I knew you would make that trick but I perceived them all to be different lengths. and I'm from a city environment.

I have seen so many of the line tricks at my age that I know when someone asks if this line is longer than the other and it looks like it does I know they aren't different

Amazing video yet again! Thank you! You got my likes on all your videos. Poor cats though....I wonder if they eventually regained their ability to properly navigate their environment, neural plasticity and all that...

Hi Nessy! Couldn't help but noticing the scenic locations of this video. Hope you enjoyed your Alaskan cruise from Vancouver! My wife and I took the same cruise last year and it was awesome!

"a whisker further" The puns are real. About my perceptions, my brain definitely perceived the lines the "usual wrong" way (despite knowing the "arrows" one). I live in an urban area with a lot of buildings with 3 to 5 floors above ground. And visit the city with skyscrapers every 2,3 weeks or so.

I was Tricked by the parallelogram rectangle illusion, somewhat tricked by the horizontal/vertical illusion, but wasn't tricked by the arrow illusion. That arrow one I have seen so many times when I was young so I've become immune to it lol. I live in an urban area, but have a love of outdoors.

I wasn't fooled at all. I live in a van down by the river.

Fascinating Vanessa! Image analysis software is programmed to do feature detection too. It looks for & measures specific things like lines or coloured blobs in digital images using positions & values of pixels. Just like cats really but with maths!

Fascinating! Great video

I used to always be tricked by all of them, but after seeing them so often whilst learning Psychology I feel like my brain has learnt to see them as the same length.

I got tricked by the vertical over horizontal, but not the other 2. Good video!

Ha! I knew all of them were the same size, and I've only seen the third one before... yeah, I kinda guessed since these tests are always the same... but now talking seriously, I perceives all three tests were different size, so... would it have to do with the fact that I play lots of videogames since I live in a somewhat populated and urban area?

The parallelogram tricked me but the others didn't. I grew up in the country and suburbs but have lived in the city since I was 18 years old (now 50). Interestingly, I have a cat, blind since birth and is 12 years old now, who has no problem avoiding objects or jumping onto surfaces, down from surfaces (of varying heights), climbing ladders or leaping between 3" beams that are 24" apart. She is fearless and has no "bad habits" of depth perception with no eyeballs at all. She can even catch flies by leaping into the air (as much as 5 feet straight up) and slapping them between her paws.

Those poor adorable cats.

This video was the cats meow.

@therocksolid

9 жыл бұрын

Finn Beruldsen That quip was purrfect!

@simranmehetre1630

9 жыл бұрын

Haha

My eyes were tricked by all the illusions and I grew up in a coastal Australian town. No tall buildings but plenty of built up areas along with a forrested mountain and a nearby shoreline.

The first one gets me each time. And I've seen it countless times. I literally see one line, that is the "a" line, as significantly lengthier lol The other two never did trick me, really. Maybe on the very first glance, but in a second or two, I could see they are equal. You could say I'm from an urban environment.

I wasn't tricked much by the lines with arrows illusion since I've seen that one lots of times, but I was definitely tricked by the parallelogram illusion and the horizontal and vertical illusion. The last one is interesting, since I live in the flat American midwest and haven't been to big cities very often.

The angled lines triked me, the two arows i had already seen before - so i knew they were of the same size, even if they don't apear so in the first instant -, and the orthogonal lines i got right... but maybe it was a bias, since i knew i was being tested and i was looking more carefully past illusions (at first, the vertical seemed longer, i admit). I come from Niterói, Brazil, a city just beside Rio de Janeiro... i grew up in a region with only 1 or 2 floor houses and it had quiet some trees, hills and beaches around. I latter started going more often to Rio de Janeio, and now i live in a neighborhood full of high (10+ stories) buildings!

hay i was thinking why is it that when an ant jumps is still alive n all its parts functional n when try the same i m at a higher risk of breaking few bones i mean all bones n die "why the ant but why not me "

I am tricked by the diagonals, but not by the arrows. I am somewhat tricked by the horizontal / vertical lines but I know this illusion from before and thus I knew that they were the same length. I live in a city.

1st picture guessed A. But then when you showed me the second picture i figured out they were similar because I'm familiar with the trick. We had optical illusion books when I was back in elementary school. I live in USA Michigan.

With the first one I had a hunch they were the same length. The last one is famous and I knew then they were all the same length. I grew up on a cattle farm with a lot of grasslands and flat plains.

I live in the Great Plains, and while I had guessed that they were supposed to be the same, I still couldn't make my brain believe they were. All of them fooled me.

I'd never thought something as simple as lines has such effects on the brain.

The parallelogram got me. Maybe it's because I haven't seen it before. The two arrow lines I have seen lots of times so I don't count that one. The horizontal / vertical one I haven't seen before either, but it didn't fool me. I grew up in, and live in, a city.

thank you for this great video

Big city environment, wasn't tricked this time because I has seen them before, but I wasn't tricked the first time I has seen the parallelogram Nor the vertical line over the horizontal line. The arrows tricked me the first time I has seen it. Now....to the cats...curious if after some time of unrestricted vision, did they return to normal? And could see what they didn't before? Or did they live out the rest of their lives being vision impaired? Mike, from Grail launch

I was born and raised in south america and i always thought the planes needed to fly a long way in a horizontal line increasing their altitude slowly until they reach their normal or required altitude because they can't go up in a vertical line but now in the UK they seem going up in a straight line just like a rocket and i always wonder why. And Seems like it's just me. so i can tell that your location does change your perception.

I only mistook the vertical-horizontal lines one. I'm from a city on ways of developments, south america

I live in a city on the prairies and the only one that got me was the one that sort of looked like an envelope.

I live in a middle-sized City. I was tricked by first illusion with diagonals despite I looked thoroughly and I already was familiar with illusion with arrows.

I'm curious is if there were follow up studies done on the various cats mentioned to see if their visual senses normalized over time. IOW, if early perceptual development "fixes" the susceptability, or if ongoing brain plasticity will eventually compensate.

I've seen all these illusions before... The parallelogram one and the horizontal vertical one fooled me the first time I saw them. I'm a city girl.

your jacket is so delightfully, distractedly eighties

I knew all of them were the same length. Though it took me a second to judge them... xD

Line A appeared longer as did the vertical line and the line with the >--

Very interesting about cats. Didn't know about the experiments.

I got all off them right except the vertical horizontal one. It's strange because I grew up in a very suburban environment.

I was tricked by all 3. Kind of. I knew they were the same length, because those types of illusions would be the most related to the video topic, but I'd be lying if my base perception didn't see them as one being longer than the other. City dweller btw

Brazilian here, inhabitant of a big coastal city. I wasn't tricked by the arrows, but the other two cautch me =]

im from méxico city a big city with forests buildings and open spaces, Arrows and verticals and horizontals do not trick me, but the 2 lines in angle... they do it

I have seen these illusions so many times from since I can remember that I was not tricked by either. But if I were to nitpick and pixel-peep, then the "equal length" would go down the drain anyway, but let's not do that for now. I live and was raised in urban central Europe. Question: Was the sound from the ship cabin overdubbed? If yes, then you synced perfectly. I find it hard to believe it had such good acoustics. Which brings me to this strange realization, as I know that there are also auditory illusions. I always wondered why I suck at the McGurk effect, as I always hear just one sound, regardless of the video. Maybe the fact that as a child I was watching dubbed movies, mostly from English or French to Czech or German, which are completely different languages. I somehow learned more to listen to the sound and less to watch the mouth movements. With time I got totally used to it and now I can easily ignore the visual movement and hear the sound clearly, but this applies just to watching videos (or TV), not when listening to a real person standing in front of me. So I might be slightly “damaged”, similarly to the cats mentioned in this video. And I will probably really suck at lip reading. Yikes!

I was born in Houston, Texas, and lived there for most of my life. I have never been tricked by the third illusion, ever. During the first two I assumed you were deceiving me and therefore I cannot truthfully say whether or not I was tricked by them.

Aw that cat looked exactly like my cat! The 'M' on his forehead and everything.

I only got the last one correct. I live in the outskirts of city. It's still a city but everything's pretty much the same size small.

Here's the thing... I had previously seen the horizantal lines with angles on the end and the inverted "T" illusions, but not the parallelagram illusion... nevertheless, before the other two were displayed, I already recognized that these lines would prove to be the same size, not because the lines "looked" the same size, but because they didn't, and I didn't think that you would ask which one was longer if it wasn't some variant on the other two optical illusions you were about to show. Got confirmation as soon as the next two images were displayed. But all three illusions still "looked" as if one line was longer. So even when I know it's a trick, my perception is not able to overcome it and "see" the lines as the same length. I don't know if that means I was "tricked," but it's kind of tripping me out. :-) thanks for that! Live in dense city... lots of high-rise buildings.

I thought line a was longer than line b.I thought the two horizontal lines were the same size. I was very tempted to say the vertical line was longer than the horizontal line. I am from Albuquerque, NM

thinking my first reaction was to assume they are the same. Based on the type of test. I have seen many tests. my second reaction was to double check as fast as humanly possible before the image vanished, which i wasn't prepared for, as I am reluctant to jump to conclusions.

The parallelogram got me, but because I anticipated that it was an illusion, I assumed the lines were the same. I live in a large city.

@patriciashears25

9 жыл бұрын

I found the angle one a bit hard. I got them all as I have lived in city and open countryside. and around lots of trees.

Hey, you were in Seward, Alaska!

I live in Idaho one half is fields and the other is mounts.Because she asked i knew that they where the same but the fist two looked wrong.

I was not fooled by the vertical and horizontal lines. the diagonal was the worst and the tow horizontals fooled me a bit I grew up in Perth Perthshire Scotland. lots of hills, flat planes, large billings, castles, churches ,cliffs shier drops, ect

I'm from San Diego CA and I was only tricked by the horizontal cuz the other 2 we're taught to me in psychology class

I got nervous when we were almost into the video, and cats wernt even brought up yet, but then, kitty showed up right at the half way mark :3

I was tricked by the first two, not the last. I've lived in a major metropolitan city for most of my life (Philadelphia), however I've been living in a small rural town in Minnesota for the last two years. Interesting.

I was distracted by your beauty that I didn't notice ant difference. 😅

I got tricked by the first one I live in switzerland and as you might know, there are a lot of mountains. For ex. I live in a city, but when I open the door I see a big mountain 30m away (or 98feets)

How do you keep an eye patch on a cat for 6months??? and also do these other cats now have sight problems after theses "experiments"

1st one didn't get me, second one i wasn't sure about and the last one wasn't new to me. live in a big city.

While I had seen those illustrations before, I still would say the perpendicular lines confuse me the most. I live in the pretty flat Yucatan Peninsula of Southern Mexico

The first two look like the same size... and while I know the third one is the same size, no matter how long I look at it, even knowing they are the same length, the horizontal one looks shorter. Drives me crazy, but I already know my brain does that regardless. I'm in mountains/trees and flat wide farm lands with towns (59000 to 300 populations within a few miles of each other, spending about equal amounts in both).

Lived in suburban areas and small cities at different points in my life, was tricked only by the parallelagram.

I live in Scandinavia and I didnt get tricked by any of them because i've seen them before though the 2nd one was a bit tricky but after a couple seconds i saw it :P

I live in the city, in Sweden and I guessed correctly about the first and last but not the second one. I thought about if it was the same length or not but I ended up going with (A) being longer >

@zed1991el

9 жыл бұрын

***** I had the same outcome. Thinking about why I was thinking that was the case, I noticed that my mind saw two parallelograms and the lines were diagonal bisections and, since the top was longer on the left, I decided they were different. After finishing the video, I went back and noticed that line a bisects the parallelogram from its closest points, but line b bisects its parallelogram from its furthest points. Not sure if this was a common thought process or just my own, but I'd be glad to know your thoughts.

In the inverted "T", the vertical line is longer than the horizontal line according to the ruler at 0:27 because the vertical line is 10 cm tall not including the width of the horizontal line. Just saying.

The one with the arrows is the only one I got I live in an urban environment

I wasn't tricked, I grew up in a coastal salt marsh.

Never seen one or 2 before. But I instantly knew they were the same size, but one line looked longer then the other. It's probably cause I guessed the reason for the question

I got tricked by the first one. In fact so much that after you said all three where illusions I had to go back, pause the video and grab a ruler. xD By the way I live in Athens.

I was not tricked because I figured you were trying to trick me. Born in phoenix now live in tennessee

I've been fooled by the paralellogram illusion. I live in a city I don't have the occasion to see much horizons btw

I'm from Halifax Nova Scotia and we are a small big city. 500k people or so. The parallelogram got me. The other two did not.

i live nexto a park and faktory the faktory is rot behind my howes and the park is jist ukroes the stret and it haes a forest kunektid to it

I've seen these before so I knew the answers, but at the same time my primitive mind still sees them as off. I know what I'm seeing isn't real, but I still can't help but to see it. When the illusion is broken only then do I see them for what they are, but come back to the illusion and I'm dumbfounded again.

Not tricked by any of the three, But i live in a weird area that's a little of both too. Not sure if I'm the best subject here.

I get tricked by the parallelogram and horizontal and vertical illusion. I am from Manta, Ecuador, a rather small city beside the ocean environment

I percieved all of them as differen't, but common sense and already knowing them I wasn't tricked.

I was tricked by the horizontal/vertical one, but saw through the other two. That's probably because I grew up in a small country town with no tall buildings.

The parallelogram illusion, while I can rationalize them to be the same length, just looks skewed no matter how hard I try! I grew up in a moderately-sized town of ~100k with the tallest buildings of a towering 6 storeys high, ahah. Anyone else from Guelph, Ontario?

I wasn't fooled by any of them, and I was raised by separated parents in both an urban and rural area.

I live in a city but there is an open sea and a desert near by; I wasn't fooled at all by the horizontal vertical line illusion but was fooled by the remaining two. Does this mean that my brain prioritised the physical environment that I'm most exposed to (in this case the city) instead of the other one that I'm less exposed to (desert and sea)! Or does the landscape have to be of a special type or contain certain aspects (like mountains, fjords, hills,..,etc) for the Muller-Lyer and Parallelogram illusion not to deceive a person. If so then what is the tipping point that determines which environment wins or loses in the recognition of these illusions? Accordingly are there people out there who can not be fooled by these illusions due to special exposure to a very unique physical environment? And if the above is true...then does this give them an advantage over the rest of us when it comes to performing jobs or activities dealing with lines (architecture, engineering, construction,..,etc)? Or recognise and avoid certain hazards in the work place (by realising that an item does not look right from a single glance instead of taking the unnecessary precaution of remeasuring sizes and dimensions)? To conclude could this explain why some countries/regions seem to produce many individuals who are competent in a special field due to their physical environment encouraging abilities (not being fooled by visual illusions) that make them able to gain a special advantage over others? Finally is there a flip side to all of this, such as an individual who has such strict conformance to dimensions being unable to achieve creativity in other areas?

I just knew they were all te same her voice gave it away also I think I did something close to this before.

Hooray!

I correctly answered last one... I grew up in outskirts with many empty fields and house type buildings.

Though I'm familiar with the illusion my brain was still tricked. Grew up in a sort of country environment until I was about 5, then moved to a suburban environment.

@Scerttle

9 жыл бұрын

EssThree Incidentally, what other people perceive as perfect squares, I perceive as slightly taller rectangles and what I perceive as a perfect square is actually a little bit squat.

@Scerttle

9 жыл бұрын

EssThree Incidentally, what other people perceive as perfect squares, I perceive as slightly taller rectangles and what I perceive as a perfect square is actually a little bit squat.

I'm from Seattle a big city surrounded by lots of mountains. I was tricked each time

Even when I already know those images i can see the lines with the same longitude. I knew they are but I can't see it.

Wow, once again, another thing I had no idea of...and about cats...that's it...next video is for sure with cats! How radioactive is my cat, coming up this weekend!

If you like this channel, I think you would like Thoughty2. The type of content discussed and even the way the host speaks is similar.

rats horizontal vertical got me [rural midcoast maine]

tricked (that is, they look wrong despite me knowing the answer) by the parallelogram and vertical-horizontal ones, but not the Müller line. i am from Georgia, spend most of the time indoors or out in the hilly woods around my house. also, I'm the 11th person to watch this (according to KZread)

Plymouth uk and yes

That cat at 1:43 looks *E X A C T L Y* like my cat

Hey Vanessa, what do you think about a BrainCraft's subreddit? Reddit's comments are better than KZread's, they are neater, more intuitive and user-friendly, so we can talk about your videos.

@braincraft

9 жыл бұрын

Hey I would love that! Awesome idea. Feel free to set one up if you can :)

@communistjesus

9 жыл бұрын

BrainCraft Americans???... Which Americans???... America is the landmass which runs from TIERRA DEL FUEGO NEAR THE SOUTH POLE ALL THE WAY up North to Kiska island near Putinland aka Russia.. It is no wonder that some countries perceive the USAians(trademark) as being both: Selfish and ignorant...

@doctorwatson4x4

9 жыл бұрын

+communistjesus No point denying that when one says America,one usually thinks of the US,I'm Indian so maybe if I was a Latino south American I'd be offended but hey

@bryangillis1362

8 жыл бұрын

+communistjesus It's a language issue. Just like Germany is called "Allemand" in French and "Deutschland" in German, that big landmass is called "The Americas" in English, "America" in Spanish, etc. And similarly for what you call people from the USA. Don't be fooled by a false friend in a different language into thinking it should mean the same thing as it does in yours, even when the etymology is related. (And if you want to claim it's all one continent, not two, then I have to ask you why Europe, Asia, and Africa aren't all considered one continent.)

@SlocketSeven

8 жыл бұрын

+communistjesus If we mean South America, we say South America. If we mean Central America, we say Central America. If we mean Canada, we say Canada. When we say America, we mean 'The United States of". It's not an insult to have the prefix there. It's a non judgemental descriptor. You can't expect us americans to call ourselves Unitedstatesians. We're American. I'm sure that a Brazilian person wouldn't want to be called American either. Which Americans she is referring to is obvious to any english speaker, you are either being needlessly pedantic, or willfully ignorant.

Still awaiting an answer about the cats. Did they have to suffer being vision impaired from now on? Were they able to be returned to normal vision? Mike (Grail launch participant)

So there might be lines in the world that we are unaware of?

the way your shirt fits is nice

@EDITHFIVE

9 жыл бұрын

Andrew Brown Please kind person feel free to think whatever you desire, however consider resisting saying or writing statements that remark on the appearance of others. Help the KZread comment section become civilized. Your comment may lead people to believe you are a 14 year old boy when you are most likely more mature than that. If you are a male imagine a female close to you starting a vlog and receiving comments like yours. Would you want your mother, sister or daughter exposed to such demeaning messages video after video? While I do not think the genius who landed a spacecraft on a tiny asteroid did anything wrong in wearing a 'loud' shirt at his press conference I do think remarks such as yours harm the recruitment of women for science careers. One comment on a women's appearance is a small harm, but multiply the harm by all the comments on KZread that are judgmental of a woman's looks and a young lady, say in high school, may start to believe it is just too much hassle to study science if they know they will receive remarks like yours whenever they publish. I know you are being complimentary, but imagine yourself constantly hearing remarks like yours every time you walked into a room full of women. Peace and good luck on all your endeavors.

@Astro-X

9 жыл бұрын

Andrew Brown I agree Andrew. The curves are evident ;)

I didn't fall for any of them because I've seen similar illusions before. Had I not known, however, I most likely would've fallen for them. I'm from New York State (not the New York City) where there are flat fields everywhere.

I can not understand how can you get more and more beautiful