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Proceedings Paper

Only stereo information improves performance in surgical tasks
Author(s): Joerg W. Huber; Neil S. Stringer; Ian R. L. Davies; David Field
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Paper Abstract

Laboratory based research has shown that the use of stereoscopic displays and observer-produced motion parallax in telepresence systems can each improve operators' performance beyond that achieved using conventional 2-D displays. In applied contexts such as minimal access surgery (MAS) tasks are more complex and a range of sources of depth information is available. We therefore decided to examine the benefits of stereoscopic displays and observer-produced motion parallax under more realistic conditions. The 'pick and place' task was taken from surgical performance studies. It involved picking up small irregular spheres from one place and dropping them through apertures in another. The task was performed under seven different viewing conditions: (1) baseline (monocular), (2) biocular, (3) stereoscopic, (4) free motion parallax, (5) instructed motion parallax, (6) augmented motion parallax and (7) stereo and motion parallax. Each subject did a baseline condition (monocular viewing) followed by one of the seven experimental conditions, followed by a final block of the baseline condition (n = 7 conditions x 10 subjects). Only stereoscopic viewing (conditions 3 and 7) leads to better performance. The provision of motion parallax adds nothing to performance. It may even reduce the effectiveness of stereoscopic viewing. The evidence converges on the fact that binocular viewing confers a considerable performance advantage, while providing motion parallax information, to novice operators at least, is not beneficial.

Paper Details

Date Published: 4 May 2004
PDF: 8 pages
Proc. SPIE 5372, Medical Imaging 2004: Image Perception, Observer Performance, and Technology Assessment, (4 May 2004); doi: 10.1117/12.544718
Show Author Affiliations
Joerg W. Huber, Univ. of Surrey/Roehampton (United Kingdom)
Univ. of Surrey/Stag Hill (United Kingdom)
Neil S. Stringer, Univ. of Surrey/Stag Hill (United Kingdom)
Ian R. L. Davies, Univ. of Surrey/Stag Hill (United Kingdom)
David Field, Univ. of Surrey/Stag Hill (United Kingdom)


Published in SPIE Proceedings Vol. 5372:
Medical Imaging 2004: Image Perception, Observer Performance, and Technology Assessment
Dev P. Chakraborty; Miguel P. Eckstein, Editor(s)

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