[The effect of the neck rotation test on auditory evoked brainstem potentials in healthy subjects]

The purpose of the study was to assess the effect of neck rotation test on the pattern of brainstem auditory evoked potentials in healthy subjects. The study was carried out on 40 healthy subjects aged 19-26 years using a Neuromatic 2000 C device of Dantec, by the generally accepted method. The records were taken with the patient in lying position with head in neutral position and during head rotation through 60 degrees to the right and then to the left side. A click stimulus was fed into the tested ear, its frequency was 10 Hz and it was repeated 2000 times. The filters used were 100 Hz-2 kHz. The records obtained during neck rotation showed that the latency times of various waves were slightly prolonged on the side of the rotation (but were still within normal limits), while on the contralateral side they were similar to those in normal position. Moreover, neck rotation to the right or to the left side caused a bilateral slight shortening of the latency time (in absolute values) between waves I-III, at the expense of slight prolongation of this time between waves III-V which was still within the variability range of the normal values.