Mechanism of Motion Sickness in the Cat

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Abstract
The otolithic apparatus rather than the semicircular canals seems responsible for motion sickness in the cat. Even massive semicircular canal stimulation failed to produce motion sickness, in spite of the additional otolithic stimulus that very high deceleration rates impose. Deceleration rates of up to 6 rps2 failed to produce evidence of functional damage to the ampullary end organ. Its ability to withstand rates of over 2,000[degree] / sec2 indicates this structure is a good deal more rugged than is generally recognized.

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