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Scientists Find Believing Can Be Seeing

Posted by samzenpus on Thu Feb 21, 2008 07:58 AM
from the the-mind-is-quicker-than-the-eye dept.
Ponca City, We Love You writes "Scientists at University College London have found the link between what we expect to see, and what our brain tells us we actually saw revealing that the context surrounding what we see is all important — sometimes overriding the evidence gathered by our eyes and even causing us to imagine things which aren't really there. A vague background context is more influential and helps us to fill in more blanks than a bright, well-defined context. This may explain why we are prone to 'see' imaginary shapes in the shadows when the light is poor. "Illusionists have been alive to this phenomenon for years," said Professor Zhaoping. "When you see them throw a ball into the air, followed by a second ball, and then a third ball which 'magically' disappears, you wonder how they did it. In truth, there's often no third ball — it's just our brain being deceived by the context, telling us that we really did see three balls launched into the air, one after the other." The original research paper is available on PLOS, the open-access, peer-reviewed journal."
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  • Is this actually news?
    • Re: (Score:3, Interesting)

      It may not be a breaking news story, but it's definitely interesting. I think we all have had things like this happen, and I guess I'm not surprised that it's triggered more by vague context. I've always just figured people were exaggerating when they describe stories about things that happened and someone else calls them out on it - but they probably thought they really saw what they claimed to see.
        • Frankly, I've always thought that our brain completes visual information with what it expects to see, and that different people will have different (and often contradictory!) recollections of the same event are both well established in psychology/neuroscience/etc.

          But then, I could be wrong. That's why I asked.
          • Re: (Score:2, Insightful)

            That's pretty cool, you know. Rashomon [wikipedia.org] was like this but different. Also, is this related to the way that when you read you sometimes skip over spelling mistakes and get the right word? One of my classmates had written conjugation everywhere in his Astronomy notes instead of conjunction, and I didn't even notice when reading over them until I reached one that was only part written, the rest going off the page.
          • Frankly, I've always thought that our brain completes visual information with what it expects to see, and that different people will have different (and often contradictory!) recollections of the same event are both well established in psychology/neuroscience/etc.
            As evidenced on all those "judging" shows; People's Court, Judge Judy, Judge Alex, etc.
    • Re:News? (Score:5, Funny)

      by owlnation (858981) on Thursday February 21 2008, @08:29AM (#22501250)

      Is this actually news?
      Only if you choose to see it that way.
  • by somersault (912633) on Thursday February 21 2008, @08:06AM (#22501114) Homepage Journal
    When you're out driving, you have to be more aware of the possible dangers that you will be facing, like cyclists and motorcyclists. A lot of people don't see them coming at junctions because they're just looking out for cars on the road..
      • by TripMaster Monkey (862126) on Thursday February 21 2008, @08:22AM (#22501204)
        When I'm driving, I only really notice things that move.

        What are you, a T-Rex? ^_^
      • by somersault (912633) on Thursday February 21 2008, @08:25AM (#22501228) Homepage Journal
        Indeed. I took an Advanced Drivers training course from a police officer about a month ago, it really 'opened my eyes' so to speak. I'd been pretty appalled at my driving before, I didn't see any reason to keep to speed limits, but once you start trying to take in all the information you can from roadsigns and such, and you go on a skid course that demonstrates the braking distance difference between 20 and 30mph, you start to see the justification in having 20 limits outside schools and stuff like that. Save driving isn't about driving slowly of course - you can be perfectly safe at 110 (our instructor demonstrated this on a long straight, was funny to be doing that kind of speed legally :D ), but as you say training is very useful to get your brain noticing the right kind of things and not just going along on autopilot. After a while your driving will of course automatically incorporate the things that you have trained yourself to look out for, but it's still best to keep an active interest in what's happening all around your vehicle. I feel a bit of a hypocrite talking about road safety after the reputation I got for speeding around all the time, but hey I've not got any points on my license and I've not had an accident for a few years, because I was still sticking within what I considered to be my personal safety limits..
        • and thats why some ations demand those kinds of things before they allow you to drive just about anything...
          • by somersault (912633) on Thursday February 21 2008, @10:30AM (#22502766) Homepage Journal
            Well, considering I've only been driving for a 'few years' and the accidents I had were within 6 months of my test :P Not exactly boasting, just saying that I don't consider my driving pre that course to have been reckless, especially compared to the average driver. The difference now is that I *know* that I'm a lot better than the average driver, and have been told so by someone that's been a police driving instructor for about 30 years. A lot of the things we were taught were things that I've been doing naturally (possibly partially because I was first taught to drive by my dad, who used to be in the police himself before becoming a coder), and I've unlearned some bad habits that I picked up over the years. I'm also obeying speed limits more now (not the ones on country roads, but in built up areas I am), but I don't going slower to be the primary reason for improved safety (or, rather, reduction of elements that could present a danger, since 'safety' can only really be seen in retrospect through a lack of accidents really), I see more my going slower as a result of firstly having more respect for the law through having been driving with a police officer and hearing that they understand that speed is not a primary factor in defining how safe a driver you are, and two it is a side effect of paying more attention - when I first was trying to take in everything like road signs that I'd never seen before, I automatically was driving at about 20mph just trying to get used to looking at them again, as well as reading them out. Now I can do my sign observations at any speeds, but since I got used to travelling at 30 without being too bored, I've been able to keep my speed down, and long may it continue (just because I feel guilty breaking the speed limits even when I know it's "safe" to do so!)
      • Re: (Score:3, Insightful)

        You mean things like stop signs, traffic lights, broken down cars blocking the lane, 5 year olds standing still at the side of the road?

      • That's part of it, but not all of it. Knowing how to use your cruise control doesn't have that much to do with safe driving (and is also pretty rare here in the UK - I did specify it as an option on my car, but I've only used it a coupla times in the year that I've had it), and I guess people in a city may not have much reason to ever use full beam so that's not so hard to believe either. But it is definitely true that it is more than just a lack of attention - it's knowing where to focus the attention as y
      • by jellomizer (103300) * on Thursday February 21 2008, @01:32PM (#22505570)
        Conditioning.
        Take a normal English Class. The bulk of the class is trying to teach people to get meaning out of litature and learning to read between the lines to get the underlining meaning. So you learn that you get an A+ when you read when Tess got off the tractor and her hands felt numb, then translate it to the numbing dehuminizing effect of the approaching indrustral revolution. Vs. a C+ when you read the the same part and you stated it was a means to express the feeling that you get after you ride a tractor for a long time, the author probably wrote it because most people who is his book proably isn't a farmer, so they would be learning how it feels to drive a tractor.
        We are trained to look so deeply and make meaning out of everything that it has driven our society batty. 20 Years ago a local grocery store called Price Chopper use to have a picture of a coin with a woman face on it with an Axe cutting the coin, the had to change the image of the coin because people beleaved that it was portraiting woman abuse. With the downfall of Science and Math education we are loosing the ability to see things at face value.
  • by Ixlr8 (63315) <<L.Mol> <at> <ewi.tudelft.nl>> on Thursday February 21 2008, @08:09AM (#22501134) Homepage
    ... is the direct translation of a dutch expression. Also encountered as "First see it, only then believe it."

    But apparently we (the dutch) are completely wrong.
    • by RAMMS+EIN (578166) on Thursday February 21 2008, @08:50AM (#22501408) Homepage Journal
      ``But apparently we (the dutch) are completely wrong.''

      On the contrary. I think the saying is there exactly _because_ we naturally tend to do things the other way around. We believe something, and then we try to fit the evidence to our beliefs. The saying tells us to regard the evidence, and base our beliefs on that.
  • Pretty old news... (Score:5, Informative)

    by TripMaster Monkey (862126) on Thursday February 21 2008, @08:10AM (#22501140)
    As the summary noted, this is something that people have known about for a very long time. More specifically, this same subject was being discussed on the same website almost eight years ago [sciencedaily.com].
    • Exactly. Vision is all in the brain -- you don't "see" with your eyes, you "see" with your brain. And your brain naturally filters what it sees. Sometimes these filters are wrong -- they make up stuff that isn't there. Conversely, many times you don't see something because you don't expect to see it. How many times have you went looking for some place that you wanted to go by looking it up online and then when you get there you go "Why, I must've driven by this place a thousand times and never even kne
    • More specifically, this same subject was being discussed on the same website almost eight years ago
      Odd, I didn't know Zonk was the editor of Science Daily.
  • by nexuspal (720736) on Thursday February 21 2008, @08:12AM (#22501142)
    All of the police officer shootings where the victim had a remote or other non-nefarious object in their hands. It is quite possible that the officer had a mindset to the effect that, hey this guy probably has a gun, and his or her mind see's what they wanted to see.
    • by Lilith's Heart-shape (1224784) on Thursday February 21 2008, @09:04AM (#22501536)

      It is quite possible that the officer had a mindset to the effect that, hey this guy probably has a gun, and his or her mind see's what they wanted to see.
      I doubt that all of the cops who shot innocent people because they thought they saw a gun in his hands wanted to see a gun. Some of them were probably afraid that a gun was what they saw, and reacted to that fear. Remember the Wizard's First Rule: "People will believe a lie either because they want to believe it's true or because they are afraid it might be true."
      • "Remember the Wizard's First Rule: "People will believe a lie either because they want to believe it's true or because they are afraid it might be true.""

        Never heard that one before, but man is it accurate, esp regarding various cults and religions.
    • Re: (Score:3, Interesting)

      The first thing that came to mind for me is that this is even more evidence that eye-witness testimony isn't a reliable source of information in criminal trials. If I was ever serving on a jury and the only evidence was someone's eye-witness testemony, I'm not sure I could ever consider that proof "beyond a reasonable doubt."
      • having all police routinely armed is a bad idea.
          • Re:Which is why... (Score:4, Insightful)

            by zoney_ie (740061) on Thursday February 21 2008, @10:46AM (#22503022)
            Police officers are trained and take on the risks of the job whereas innocent bystanders have no recourse against misjudged police shootings. Calling in police firepower only where likely to be needed is a sound strategy, even if it does in some cases put the police officers at greater risk. Better that than the population at large being at greater risk. Even with the police forces who are not routinely armed there have been misjudged shootings (e.g. Republic of Ireland, UK). There's no way I would want the police routinely armed. They should of course all be trained in firearms and have access to the best kit available, with armed officers ready to react when needed. The situation we have in Ireland is pathetic with the police having to use old army facilities for training.

            The US is however probably a lost cause for gun control anyway with the genie being out of the bottle so to speak. Nevertheless, even acknowledging that reality, the situation there is obviously insane to anyone outside the US. There should at the very least be ongoing research and strategising as to how to normalise the situation there. Having more guns than people is *not* a normal situation, it's just a recipe for disaster.
              • Re:Which is why... (Score:4, Insightful)

                by nexuspal (720736) on Thursday February 21 2008, @01:48PM (#22505784)
                Basically, it comes down to this. The bad guys with or without guns, would love to rampage and pillage society, with the only thing holding them back being the police and armed citiziens. This is a huge, huge, problem here, people with no moral compass who could care less if you lived or died. The ONLY deterent to them is force, it's all they understand. If there were no threat of force they WOULD DEFINITELY form roving gangs and take all they could.

                That is the problem in the states imo, we don't focus on these lower income demographic (typically) people to the degree that we should. If we brought those lower classes closer to middle class, the proerty rights issue would be of far less concern, as most people would see the error in acting like primitve animals, taking what they want as long as they feel they'll get away with it, at the cost of my life and others.
  • "Illusionists have been alive to this phenomenon for years," said Professor Zhaoping


    "Alive to this phenomenon" is precisely how an illusionist would want you to perceive the effects of their knowing how something really was. What a perfect idiom.
  • because this is about the only thing which explains my friend and his girlfriends belief in Ghosthunters and such...

    I always looked at things this article covers along the lines of we make a decision and justify it later, not the reverse.
  • by Ozric (30691) <ozric&tampabay,rr,com> on Thursday February 21 2008, @08:36AM (#22501288)
    The Buddhist Monks have known this for a very very long time.
    • lots of people knew lots of things. The question is, did they prove it using the scientific principle?
      • Read about epistemology, the work of Berkley, Descartes... nothing about the mind is really proven.

        Scientific principle doesnt mean much if we cant believe what we see.
        • This is a huge logic flaw. There's degrees of certainty.

          Any decent scientific experiment will attempt to remove human bias etc. Just because you can't prove anything 100%, doesn't mean everything is equally valid.

          If one group said "we don't believe in ghosts" and another group said "we could not find any evidence for ghosts, despite extensive testing" then which opinion would you trust more?
  • by blunte (183182) on Thursday February 21 2008, @08:40AM (#22501308) Homepage
    18 observers is enough? Not that I necessarily disagree with the results they've gathered in this study, but the sample group seems awfully small....
    • 18 observers is enough? Not that I necessarily disagree with the results they've gathered in this study, but the sample group seems awfully small....

      I think 640 observers would have been more like it...

  • The summary says scientists have found the link, but the reality is more like they have proven the link. As TFS itself says, Illusionists have been alive to this phenomenon for years.

    The most important thing one learns in art school is how to see. By this I mean that non-artists see like non-mathemeticians calculate.

    Now I have to go and read the research paper.
  • by ardle (523599) on Thursday February 21 2008, @09:03AM (#22501528)
    "Who are you going to believe, me or your own eyes?" - Chico Marx dressed up as Groucho in "Duck Soup" (context information serves as anti-pedantry device).
  • by dpbsmith (263124) on Thursday February 21 2008, @09:14AM (#22501664) Homepage
    What the article doesn't say is that this phenomenon increases in middle age, both with respect to seeing and hearing. I'm not sure how much is due to actual declines in visual and auditory acuity; I'm inclined to think it's a cognitive effect, like common memory loss.

    I've always supposed Lewis Carroll's poem, from _Sylvie and Bruno,_ was referring to this effect. Certainly "He thought he saw... he looked again and found it was..." is happening to me more frequently.

    He thought he saw an Elephant,
    That practised on a fife:
    He looked again, and found it was
    A letter from his wife.
    "At length I realise," he said,
    "The bitterness of Life!"

    He thought he saw a Buffalo
    Upon the chimney-piece:
    He looked again, and found it was
    His Sister's Husband's Niece.
    "Unless you leave this house," he said,
    "I'll send for the Police!"

    He thought he saw a Rattlesnake
    That questioned him in Greek:
    He looked again, and found it was
    The Middle of Next Week.
    "The one thing I regret," he said,
    "Is that it cannot speak!"

    He thought he saw a Banker's Clerk
    Descending from the bus:
    He looked again, and found it was
    A Hippopotamus.
    "If this should stay to dine," he said,
    "There won't be much for us!"

    He thought he saw a Kangaroo
    That worked a coffee-mill:
    He looked again, and found it was
    A Vegetable-Pill.
    "Were I to swallow this," he said,
    "I should be very ill!"

    He thought he saw a Coach-and-Four
    That stood beside his bed:
    He looked again, and found it was
    A Bear without a Head.
    "Poor thing," he said, "poor silly thing!
    It's waiting to be fed!"

    He thought he saw an Albatross
    That fluttered round the lamp:
    He looked again, and found it was
    A Penny-Postage Stamp.
    "You'd best be getting home," he said:
    "The nights are very damp!"

    He thought he saw a Garden-Door
    That opened with a key:
    He looked again, and found it was
    A Double Rule of Three:
    "And all its mystery," he said,
    "Is clear as day to me!"

    He thought he saw a Argument
    That proved he was the Pope:
    He looked again, and found it was
    A Bar of Mottled Soap.
    "A fact so dread," he faintly said,
    "Extinguishes all hope!"

  • In 1993 I was stranded on the interstate after a blizzard in Atlanta (a rare case indeed) with thousands of Catholic pilgrims. These people had come from Canada and northern states mostly and were headed back home when the Blizzard hit. It seems that the Virgin Mary had appeared in a bush in Conyers, GA with very unfortunate timing for her devotees. And every one of these people felt the need to tell me about their divine experience and how radiant the holy mother looked in said bush appearance. Many of the
  • I think it was William James, appx. 100 years ago, who said "If you believe something to be true, it will be true in its consequences." If you believe you see something, you will see it. It won't be there in reality, but you'll see it.
  • Idealism (Score:3, Interesting)

    by bug1 (96678) <glenn...l...mcgrath@@@gmail...com> on Thursday February 21 2008, @09:47AM (#22502116)
    There is a branch of philosophy called idealism which is pretty out there, it seems a bit crazy at first, but it deserves more respect than one gets from an initial glance.

    All our experiences come from our senses, our eyes/ears/nose/skin/tongue send electrical impulses to our brain, the mind interpreters these groups of sensory experiences and we call it reality.

    Idealism says (as best i can describe) that "reality" is the mind's interpretation of these sensory experiences, what causes our senses to send a particular sensory experience to the brain isnt directly knowable, therefore not as relevant as the experience itself.

    It is the sensory experience itself that defines reality, i.e. reality is the effect not the cause.

    The Wikipedia page doesnt do the topic justice.
  • AKA... (Score:3, Insightful)

    by McDutchie (151611) on Thursday February 21 2008, @10:11AM (#22502432) Homepage

    Scientists at University College London have found the link between what we expect to see, and what our brain tells us we actually saw revealing that the context surrounding what we see is all important -- sometimes overriding the evidence gathered by our eyes and even causing us to imagine things which aren't really there. A vague background context is more influential and helps us to fill in more blanks than a bright, well-defined context.

    I think this phenomenon is often referred to as religion.

  • Perhaps.. (Score:3, Funny)

    by SpacePunk (17960) on Thursday February 21 2008, @10:34AM (#22502828) Homepage
    the scientists are seeing the results they want to see, and not what the results actually are. That would both invalidate, and validate their claims.
  • Something like this happened to me. Reading an article about how Trader Vic was about to donate a sculpture of Smiledon to UC Berkeley, before I got to the part where it was to be displayed, my brain decided it was going to be placed outside of the Life Sciences building, so my conscious mind read 'life sciences building'. However, when I turned to my roommate to tell him about this, my mouth said it was going to the 'Earth Sciences' building! This caught me by surprise, so I went back to the article and
  • by neurocutie (677249) on Thursday February 21 2008, @12:17PM (#22504340)
    "Professor Zhaoping" is Li Zhaoping, and being Chinese, her family name (last name) is Li, NOT Zhaoping (her given, first name). Silly editors, etc. its like going around and calling her Professor Bob or Professor Susie...
    • Here's an example (Score:5, Insightful)

      by kahei (466208) on Thursday February 21 2008, @08:39AM (#22501306) Homepage

      Well, here's an example. Suppose some guy picks up various scattered bits of facts -- a story on slashdot here, something about Mars kooks there. Now, he has an instinct -- or maybe it's hardwired at an even lower level than that -- to make up patterns around those scattered facts, to fill in the blanks. So he imagines a category of people who 'see things where nothing exists'. Before long, he's convinced enough of this specific phenomenon -- of this entity which is purely a product of his own tendency to create patterns to explain the phenomena he senses -- that he actually starts posting about this group of people on slashdot, as if there actually were one specific kind of person who has this trait!

      And then other factors, psychological, move him to assume that he's 'better' than this entity that has popped up in his mind and that he now believes is an actual thing. He even begins to give patronising advice. To him, it's just as if he's *interacting* with this thing, this 'people who see things where nothing exists'. His self-deception is complete!

      Far fetched? Maybe. But maybe not...

      HTH

        • grandparent had a very good point
          So did parent (to your post).

          People who are capable of overcoming their imagination and sticking to reality ARE BETTER PEOPLE.
          In what sense of "better"?
    • That's more about optical illusions and imagination - the summary talks about thinking you saw a ball when in fact there was none, which is a bit different. IMO it helps to explain why people's memories can be modified so easily by suggestion, and as I said above, why so many people don't actually see motorcyclists coming as they check a junction before they move onto a new road. This is more about situations where you're not actually questioning what you see, because you're not really expecting any funny b
    • While your statement is 100% correct, normally when I'm wearing beer goggles I'm looking for something other than a relationship :)