A vertical head rotation with the eyes centered.

More interesting is that rotating the head down (or up, right & left) can cause a violation of Listing's Law.

Note the location of the + on the eye and follow it as the head tilts down by 90 deg. while the VOR keeps the eyes steady in space.


Copyright © 1996 Tutis Vilis and Douglas Tweed
University of Western Ontario
London Ontario Canada
Updated October 28, 2005

Comments welcome. Email to tutis.vilis@schulich.uwo.ca