Behavior: Basic Psychology of the User - Foundations for Designing User-Centered Systems - page 115

the display adapts to provide more details where the fovea is, the quality will reach
a maximum.
In the second area, users integrate their senses—motion, sound, and vision.
Current displays are not well integrated with users' movements. This integration
will be important for virtual reality (VR). Head-mounted displays move with the
user, and most do not compensate for this motion. The users feel their motion with
their inner ear, and do not see this motion in the display (or, in some cases, see
movement but do not feel it with their inner ear). Over periods of time, sometimes
even short periods of times, this non-correspondence between eye and ear can lead
to nausea. This mismatch can also appear when an interface is stationary and the
user is inside a moving vehicle. Examples include reading books in cars as well as
using displays in cars, trucks, and ships. The results are not directly dangerous but
they are debilitating and dangerous if the display is necessary for the vehicle.
Work is ongoing to understand and ameliorate these effects.
Finally, you will need to think about how to motivate your users to do the tasks
they need to do. This will involve balancing their individual needs and aspirations
with an appropriate combination of extrinsic and intrinsic rewards if you want to
get the best out of them.
4.9 Other Resources
For further descriptions of human perception and performance, it is worth con-
sulting this text:
Boff, K. R. and Lincoln, J. E. (1988). Engineering data compendium: Human perception
and performance. Wright-Patterson Air Force Base, OH: Harry G. Armstrong Aerospace
Medical Research Laboratory. This set of three volumes covers the breadth of what was
known about these areas of human behavior at that time. It remains useful because of its
breadth.
There are several texts that will tell you more about visual perception. Two we
recommend are:
Bruce, V., Green, P. R., and Georgeson, M. A. (2003). Visual perception: Physiology,
psychology and ecology. Hove, UK: Psychology Press.
Sekuler, R. and Blake, R. (2005). Perception. (5th ed). New York, NY: McGraw-Hill.
An excellent introduction to eye movements and their relationship to attention
if offered by Goldberg and colleagues:
Goldberg, J. H. and Kotval, X. P. (1999). Computer interface evaluation using eye
movements: methods and constructs, International Journal of Industrial Ergonomics, 24,
631-645. This provides comparative assessment of measures of eye movement locations
and scan paths used for evaluation of interface quality.