• Results of electronystagmograhic (ENG) position and bithermal caloric tests from patients with abnormally enlarged summating potentials (SPs) were compared with results from a unilateral weakness (UW)-matched ENG-comparison group and with a group of patients with unilateral cochlear deficits and dizziness but without enlarged SPs. The patients with enlarged SPs had a significantly higher incidence of caloric UW on the involved side than did the patients with cochlear deficits but without enlarged SPs. Also, the patients with SP enlargement had a significantly higher incidence of directional preponderance toward the involved side than did either of the comparison groups. Across-group differences in position test results were predictable from the caloric test results, but these differences were not statistically significant.
(Arch Otolaryngol 1981;107:263-270)
Coats AC. Meniere's Disease and the Summating Potential: II. Vestibular Test Results. Arch Otolaryngol. 1981;107(5):263–270. doi:10.1001/archotol.1981.00790410001001
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