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Illusion - Is Seeing Really Believing?
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Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
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00135_Text_re08t.txt
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1997-02-04
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896b
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30 lines
A simple display of two lines
located at differing distances,
shown in cross-section,
illustrates that the line that is
not fixated by the two eyes (B)
will fall on noncorresponding
retinal loci. The perceptual
system has no difficulty
ΓÇ£decidingΓÇ¥ that images b and b'
correspond and represent the
same object in the world.
In stereograms such as those
with squares shown earlier and
in simple displays in everyday
life, such as the one illustrated
at left, the problem does not
seem to arise. For example, it is
obvious that, when the
observer fixates line A so that
its images a and aΓÇÖ fall in
corresponding places on both
retinas (on the central region
of vision, the fovea), line B
yields images b and bΓÇÖ in
noncorresponding places.
Images b and bΓÇÖ must therefore
represent the same outer thing.
There is no other possibility.