S-DHstandard Dix-Hallpike [test](English)duration of nystagmus of the L-DH test is significantly longer than that of the S-DHMSPEV, L-DH, SPEV, BPPV, DHNeurology, Ophthalmologyhttps://doi.org…2/iao.2020.7444« S:D ratioS-E ADL »