Abstract
We performed the air caloric test in 22 normal ears, and confirmed that changes in the maximum slow phase velocity are nearly linear with changes in the air temperature between 10 and 50°C.From the velocity-temp e rature curve obtained by the above evaluation, the conditions of 15°C air,61/min, and 60 seconds were considered to be optimal for producing responses similar to those obtained when using 5 ml water at 20°C infused over 20 seconds. The results of the air caloric test and the water caloric test performed under these conditions in patients with vertigo were comparable. Judging from these findings, the air caloric test is considered to be a useful examinations of vestibular function.
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