An Example of Listing's plane

Using a quaternion representation of eye position, one sees that

1) eye positions are confined near a planar surface

2) the surface has a finite thickness (SD ranges from .4 to 1.1 deg.)

3) the surface is equally thick over the horizontal & vertical range

4) eye position is confined to a plane during saccades as well as after saccades.

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