Differential effects of head-mounted displays on visual performance.
Head-mounted displays (HMDs) virtually augment the visual world to aid visual task completion. Three types of HMDs were compared [look around (LA); optical see-through with organic light emitting diodes and virtual retinal display] to determine whether LA, leaving the observer functionally monocular, is inferior. Response times and error rates were determined for a combined visual search and Go-NoGo task. The costs of switching between displays were assessed separately. Finally, HMD effects on basic visual functions were quantified. Effects of HMDs on visual search and Go-NoGo task were small, but for LA display-switching costs for the Go-NoGo-task the effects were pronounced. Basic visual functions were most affected for LA (reduced visual acuity and visual field sensitivity, inaccurate vergence movements and absent stereo-vision). LA involved comparatively high switching costs for the Go-NoGo task, which might indicate reduced processing of external control cues. Reduced basic visual functions are a likely cause of this effect.
a Department of Training and Health , Institute of Sport Science, Otto-von-Guericke-University Magdeburg , Brandenburger Str. 9, 39016 Magdeburg , Germany.
Lutz
L
Schega
Daniel
D
Hamacher
Sandra
S
Erfuth
Wolfgang
W
Behrens-Baumann
Juliane
J
Reupsch
Michael B
MB
Hoffmann
D000328:Adult; D003463:Cues; D003626:Data Display; D004867:Equipment Design; D005133:Eye Movements; D006257:Head; D006801:Humans; D011930:Reaction Time; D013647:Task Performance and Analysis; D014792:Visual Acuity; D014794:Visual Fields; D014796:Visual Perception; D055815:Young Adult