[photo-3d] Re: Re: 3d vision again

[Jim Crowell <jcrowell@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

> I would like to know where the data comes from. Please point me in a
> direction. I still maintain that the ability to view 3D is one of natures
> miracles and I would go so far as to say that NOT being able to see 3D is
> extremely rare. 
> 
> I think there is indeed some time required for the brain and eyes to work
> together, but still, it would surprise me to learn, as one poster posted,
> that we do not see 3D from the beginning. I think we do.

It's true that not being able to see stereoscopic 3-D is fairly rare (a few
%).  But that's because most people get the needed experience in infancy.

> One thing I find interesting is how much stereo vision might vary from
> person to person. For lack of a technical term, do some of us see stereo
> at 100%, some at 95%, some at 96%.... I would bet that there are
> differences.
> 

I think so, too, but I don't think there's a lot of data on it.  There are
fairly coarse tests to see if people have stereo vision at all, but I don't
know of any research on smaller individual differences.

-Jim C.

-------------------------------------
Jim Crowell, Ph.D.
Dept. of Psychology
Cognitive/Experimental Group
Townshend Hall
1885 Neil Ave. Mall
Ohio State University
Columbus, OH 43210
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http://vision-lab.psy.ohio-state.edu/crowell/