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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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ILLUSION
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SROCK_TX.CXT
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00255_Text_re16t.txt
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1996-12-31
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36 lines
Why donΓÇÖt they? Because we
continue to perceive the
orientation of these figures in
the same way with the head
(and eyes) tilted as with the
head upright. Orientation
constancy is achieved. Thus,
the sides of the square appear to
be horizontal and vertical no
matter what the orientation of
their retinal images. Similarly,
the sides of the diamond appear
to be oblique even with the
head tilted. Only a change in
perceived orientation affects
perceived shape. In the case of
the map of Europe, because the
naive observer does not know it
is disoriented, entirely
different regions appear to be at
the top, bottom, and sides than
those that constitute the
north, south, east, and west of
the continent. Of course, once
we know about disorientation,
as with the map or the square
and diamond, we can rotate a
figure in imagination and thus
overcome any effect of
disorientation. For that reason,
it is generally important in
experiments on this issue to be
sure that the observer does not
know about the change of
orientation.