Igarashi M, Takahashi M, Homick J L
Acta Otolaryngol. 1978 May-Jun;85(5-6):387-96. doi: 10.3109/00016487809121467.
Regardless of whether the direction of optokinetic stimulus matches or conflicts with that of vestibular stimulus, if the squirrel monkey subject has a good target pursuing ability, the enhancement or inhibition of post-stimulatory nystagmus occurs. The nature of the stimuli to provoke optokinetic afternystagmus and post-rotatory nystagmus are not the same, but the similarity of response characteristics and cross-interaction strongly suggest the existence of a common neural linkage between the stimulus receptor and reactor.