The relationship between an increase in the negative summating potential (–SP) and the results of caloric tests was examined in 35 patients with unilateral Menière’s disease. The –SP was recorded by extratympanic electrocochleography. The quantitative bithermal caloric test was performed by irrigating with cool (30 ° C) and hot (44 ° C) water. An increased –SP was recorded in 20 of 35 patients (57 %). Abnormal unilateral weakness (UW) on the involved side and abnormal directional preponderance (DP) to the involved side were observed in 16 of 35 (46 %) and in 4 of 35 patients (11 %), respectively. No significant correlation was found between an increased –SP and an abnormal UW and DP in Menière’s disease.

Keywords:
Caloric test, Menière’s disease, Negative summating potential
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© 1990 S. Karger AG, Basel
1990
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