Fig. 4
From: Age dependent normal horizontal VOR gain of head impulse test as measured with video-oculography
a: Normal HVOR velocity gain frequency at 80 ms across the second to eighth decades during left and right head rotations. Results show a normal distribution (Shapiro - Wilk test for normality, p = 39). HVOR velocity gain is the ratio of angular eye velocity to angular head velocity. b: Normal HVOR velocity gain frequency at 60 ms across the second to eighth decades during left and right head rotations. Results show a normal distribution (Shapiro - Wilk test for normality, p = 0.54). HVOR velocity gain is the ratio of angular eye velocity to angular head velocity