Quantitative and qualitative electronystagmographic (ENG) responses in the damped torsion swing test have to be compared to normal subjects, the response being influenced by the patient's age. Qualitative characteristics should be carefully interpreted and have clinical importance only when they are seen in the overall ENG recordings or in a modification of a previously taken ENG pattern.
Dysrhythmia and salvos were found in 8.6% of young, normal subjects.
Van de Calseyde P, Ampe W, Depondt M. The Damped Torsion Swing Test: Quantitative and Qualitative Aspects of the ENG Pattern in Normal Subjects. Arch Otolaryngol. 1974;100(6):449–452. doi:10.1001/archotol.1974.00780040463008
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