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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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00419_Text_res23bt.txt
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1997-02-04
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49 lines
There is also some confusion
because the scene appeared
increasingly "normal" to
Stratton. By "normal," I mean
that Stratton became
accustomed to the optical
reinversion. He no longer paid
much attention to its
"peculiar" character. But
"becoming accustomed" to
something should not be
confused with coming to
perceive it differently. More
telling tests of how an observer
perceives things are possible,
but Stratton did not attempt
them. For example, suppose
figures are flashed on a screen
and the observer has to identify
them. What would be the
spontaneous response to a "W"?
At the outset, it will look like
an "M," but how will it look
after prolonged wearing of the
inverting lens device? If true
egocentric adaptation occurs,
the observer will report "W." In
order to be sure that it is
egocentric orientation that is
being tested, one can have the
observer lie in a supine
position and view the letters
overhead. Another test is to
require the supine observer
to view an overhead spot
moving in a horizontal plane.
(The horizontal plane would
eliminate confusion about
gravity-based or
environmentally defined
orientation.) When the spot
moves in the foot-to-head
direction, will the observer see
it move head-to-foot, as occurs
at the outset of the experiment,
or will he or she see it move
veridically in the foot-to-head
direction?