Posterior semicircular canal nystagmus is conjugate and its axis is parallel to that of the canal.

@article{Cremer2000PosteriorSC,
  title={Posterior semicircular canal nystagmus is conjugate and its axis is parallel to that of the canal.},
  author={Phillip Cremer and Amerio A Migliaccio and Daniela Pohl and Ian S. Curthoys and Leo Davies and Robyn A Yavor and G. Michael Halmagyi},
  journal={Neurology},
  year={2000},
  volume={54 10},
  pages={2016-20}
}
A patient with a postoperative fistula of the left posterior semicircular canal is presented. Negative pressure in the external ear canal produced upbeat-torsional nystagmus, which was recorded in three dimensions using binocular scleral search coils. The nystagmus was conjugate, without skew deviation, and its trajectory corresponded to the anatomic axis… CONTINUE READING