Precht W, Cazin L
Exp Brain Res. 1979 Sep;37(1):183-6. doi: 10.1007/BF01474264.
Vestibular nuclear neurons of the horizontal canal system (Vn) of albino rats (Wistar) failed to respond to optokinetic stimulation. Similarly, optokinetic nystagmus (OKN) could not be elicited in these animals. Brown (DA--HAN) rats, however, consistently showed optokinetic responses of Vn and OKN to identical stimuli.