Experimental Direction-changing Positional Nystagmus induced by Intra-tympanic Infusion of the Drugs

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Experimental direction-changing positional nystagmus was elicited in Rabbit by Intra-tympanic infusion of the drugs with different specific gravity such as Ethanol and Heavy water. Ethanol provoked horizontal positional nystagmus to the right when Rabbit was hold with right side down, to the left with left side down, to the non-infusion ear with nose up and to the infusion ear with nose down. The directions of horizontal positional nystagmus induced by Heavy water were opposite to those by Ethanol. These drugs probably made some effect to the inner ear reffered to the change of the specific gravity.
日本耳科学会の論文