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| • |
The vestibular
system is imperfect
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· |
The cupula
habituates in 5 seconds.
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The brainstem
and cerebellum extend this time to roughly 25
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seconds, after
which there is no further response to head
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acceleration.
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The vestibular
system is a poor transducer of very slow
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(<0.1Hz)
rotation.
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The visual
system compensates for the inadequacies of the
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vestibular
signal by providing a description of the retinal
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motion evoked by
the head movement.
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The optokinetic
response is mediated by neurons in the
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accessory optic
system in the pretectum, and the motion-
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sensitive areas
in the cortex (MT and MST).
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