Gaze-Controlled Human-Computer Interfaces

The measurement of gaze positions can not only give
insight into a subject's perceptual and cognitive
processes, but can also be used as the basis for
human-compuetr interfaces. Gaze-controlled interfaces 
can be useful for controlling complex processes, for
example steering a remote robot. The operator could
then use both his gaze and his hands to perform this
task. Also, there are handicapped people who cannot
move their limbs but can still move their eyes. For
these people, gaze-controlled interfaces can be a
way to interact with the world. In the present task,
I present two different approaches to "typing by eye"
interfaces as well as a gaze-controlled zooming
interface. Also, I discuss the use of gaze as a
response modality in psychophysical experiments.