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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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rock_txt.cxt
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00406_Text_res22t.txt
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1997-02-04
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Ordinarily, the direction of
gravity is aligned with a main
axis of a structure, such as a
room, so that both information
about gravity and visual cues
cooperate in determining
perceived orientation. This also
holds true outdoors, where the
ground is horizontal and trees,
buildings, and the like are
truly vertical. But in some
cases, such as those of the
tilted rooms, a conflict exists
between information about
gravity and visual cues. One
way to explain the outcome of
this conflict is in terms of
visual capture. Not only do our
own bodies look like they are
tilted if they remain upright
when we are inside a tilted
room, because the visual
information overpowers the
gravity-based information, but
they feel tilted, too. If so, the
veridical gravity-based
information is not directly
taken into account; instead,
the perceptual system uses the
distorted, proprioceptive
perception of body orientation
in the computation of
environmental orientation. As
a result, all information about
horizontal and vertical
orientation is now congruent
rather than in conflict.