ERBB4 and Nystagmus: ErbB4 KO mice exhibited faster vestibular compensation, [Figures 2G–I, postural asymmetry, F (1, 6) = 6.919, p = 0.039; spontaneous nystagmus, F (1, 6) = 39.94, p = 0.0007; head tilt, F (1, 6) = 21.2, p = 0.0037], suggesting ErbB4 in MVN PV neurons is detrimental to the vestibular compensation.