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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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00074_Text_re33t.txt
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1996-12-31
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725b
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26 lines
The perceived orientation of
things in the environmentΓÇöΓÇô
that is, whether they are
vertical, oblique, or
horizontalΓÇöΓÇôremains constant
regardless of our own
orientation. Even when we tilt
our heads, which results in a
tilting of the retinal image of
contours in the scene, for
example, we continue to
perceive veridically how things
are oriented. In the case of
orientation constancy, the
relevant fact that our
perceptual system takes into
account is our own position. It
determines this by sensing the
direction of gravity. However,
there is good reason to believe
that stimulus relations are also
important in orientation
constancy, as we shall see in
Chapter 8.