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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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00122_Text_res09t.txt
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1996-12-31
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850b
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CONVERGENCE
The other factor based on
binocular vision, convergence,
is the angle formed by the two
eyes looking directly at, or
fixating, a given point in space.
The gaze of each of our eyes
normally tends to converge on
the same point.
If the eyes behaved
independently of one another,
an object's image would fall in
entirely different positions on
each retina, which would
result in double vision.
Singleness of vision depends
upon the imaging of the same
objects on corresponding points
of the two retinas. The reason
for this is that the light-
sensitive cells in the retinas,
the rods and cones that are in
such corresponding places in
each eye, give rise to neural
signals that travel along fibers
that ultimately end up in
roughly the same region of the
visual cortex of the brain.