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Differential effects of head-mounted displays on visual performance

2013; Taylor & Francis; Volume: 57; Issue: 1 Linguagem: Inglês

10.1080/00140139.2013.853103

1366-5847

Lutz Schega, Daniel Hamacher, Sandra Erfuth, W. Behrens‐Baumann, Juliane Reupsch, Michael B. Hoffmann,

Tactile and Sensory Interactions

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.