PROCEEDINGS of the HUMAN FACTORS SOCIETY 33rd ANNUAL MEETING-I989 THE EFFECTS OF SPATIALLY DISPLACED VISUAL FEEDBACK ON REMOTE MANIPULATOR PERFORMANCE

The objective of this preliminary investigation was to quantify the effects of spatially displaced visual feedback on the operation of a camera-viewed remote manipulation task. Operators performed a remote manipulation task while exposed to the following different viewing conditions: direct view of the work site (baseline condition); normal camera view (zero-degree displacement); reversed camera view (1 80-degree lateral displacement); invertedheversed camera view; and inverted camera view. The task completion performance times were statistically analyzed with a repeated measures analysis of variance and it was determined that there was statistical significance (p < 0.05) due to the main effect of the viewing conditions. A Newman-Keuls painvise comparison test was then administered to the data and it was revealed that the performance times for the inverted camera view condition was significantly (p < 0.05) worse than all of the other viewing condition times. The results obtained in this study were not quite as would be expected based upon the review of the direct manipulation/displaced visual feedback literature. The difference observed in this evaluation was that the reversed camera view was ranked third out of the four camera viewing conditions while previously conducted studies have stated that the inversion/reversal was ranked third. The reversed viewing condition not only took over a minute longer, on the average, to complete than the inversion/reversal performance time, but it was also significantl