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It can be
suppressed when you don’t want it.
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Its gain can
change.
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How do you know
if the VOR is doing a good job?
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There is no
motion on the retina when the head moves.
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If a muscle is
weakened, a given central signal will be
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inadequate, and
the world will move on the retina.
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This can be
mimicked by spectacles that increase retinal
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slip.
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In either case,
the brain adjusts the VOR signal so the
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retinal slip is
eliminated.
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The cerebellum
is necessary for both suppression of the
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VOR and for
slip-induced gain change.
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