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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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00339_Field_339.txt
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1996-12-31
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The effect of attention and
perceptual organization on the
M├╝ller-Lyer illusion: if one
attends to the red lines, the
space on the left appears to be
larger than the one on the
right; if one attends to the blue
lines, the opposite is the case.
The figure to the left
illustrates the assimilation
process in another version of
the M├╝ller-Lyer figure. If one
concentrates on the red lines,
the space on the left looks
longer than the one on the
right. If one directs attention
to the blue lines, the space on
the left appears to be shorter
than the one on the right.
Attention here affects
perceptual organization, and
this in turn creates the crucial
impression of connection
between the spaces and the end
lines. This figure is also
evidence against other theories
of the M├╝ller-Lyer illusion,
especially those that explain it
exclusively in terms of such
factors as eye movements,
blurred images, or lateral
inhibition. The fact is that the
stimulus input from each half
of this figure is identical.