autism and susceptibility to visual illusions

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Joined: 20 Feb 2010
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25 Apr 2010, 3:27 pm

I found this neat article about how some people with autism are not susceptible to the Ebbinghaus illusion:

http://www.theautismnews.com/2009/11/24 ... -not-kids/

All of the circles looked the same to me and I couldn't see a size difference even when I knew which one was supposed to look bigger. Was anybody fooled? Schizophrenics are also supposed to have a decreased susceptibility to certain optical illusions (the hollow mask illusion).

On a side note, I found this fantastic website with tons of really cool illusions that I can see, stuff with movement and spinning and stuff, very impressive:

http://www.michaelbach.de/ot/

SnowWhite88
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25 Apr 2010, 3:30 pm

All of the circles looked the same to me as well.

pumibel
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25 Apr 2010, 3:57 pm

I didn't see a difference in size either.

Aimless
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25 Apr 2010, 4:10 pm

looked the same to me too
which is supposed to be bigger?

CockneyRebel
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25 Apr 2010, 4:18 pm

The circles all seem the same size to me, as well.

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Cuterebra
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25 Apr 2010, 4:48 pm

My NT husband said the middle spot with the smaller spots around it looked bigger than the one with the larger spots around it. Or maybe the reverse.

The reverse spoke illusion on that site I linked is amazing--let's you change the speed and contrast, even. Illusions are so much fun!

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25 Apr 2010, 4:51 pm

I enjoyed that other link too. I bookmarked it.

Cuterebra
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25 Apr 2010, 5:57 pm

You know, this illusion won Illusion of the Year and I can't see it. The inner text never looks like it stops.

http://www.michaelbach.de/ot/mot_freezeRot/index.html

Dots
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25 Apr 2010, 6:35 pm

I don't see it stop either.

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Michael_Stuart
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26 Apr 2010, 7:49 am

The circles are most odd... While I see them as the same size, it simultaneously causes me to know they're not the same size while looking at them.

As for the text, it did indeed seem to lag as it was supposed to. Then again, I've never really had any visual context problems as some with autism have.

dt18
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26 Apr 2010, 9:34 am

Weird, I'm not usually one to notice optical illusions...but I saw all the illusions.

theLilAsimov
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26 Apr 2010, 12:54 pm

That is odd, the circles did 'change' shape for me.

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Mdyar
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26 Apr 2010, 7:04 pm

theLilAsimov wrote:

That is odd, the circles did 'change' shape for me.

They all did for me except the" misleading context" one ; this one didn't have a variation.

The other link with the rotational illusion didn't stop for me .

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26 Apr 2010, 7:18 pm

What was said in one study was that autistic people from a review of studies on the subject were both susceptible and nonsusceptible. It depended on the question being asked, I.e. "Which line is longer?" vs "Which line looks longer?"

But all those red circles look the same size to me no matter what I do.

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theLilAsimov
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26 Apr 2010, 9:04 pm

Mdyar wrote:

theLilAsimov wrote:

That is odd, the circles did 'change' shape for me.

They all did for me except the" misleading context" one ; this one didn't have a variation.

The other link with the rotational illusion didn't stop for me .

The rotational illusion one; the text did not stop for me either.

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ImMe
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26 Apr 2010, 9:19 pm

I saw the first one. I think it has something to do with the outer big circles having an affect that makes the center circle seem smaller at first instinctual glance and vice versa for the other circle. If you stare at it you will see they are definitely the same size though. You kind of have to glance I guess. What I'm wondering is why a person would see it that way 'with life experience'. The second one looked smooth to me though. Not sure about that second one. I'm 25 if anyone wants to know my age.

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