Accession Number : ADA306720

Title :   Task Performance in Virtual Environments: Stereoscopic Versus Monoscopic Displays and Head-Coupling.

Descriptive Note : Final rept. Jan 93-Sep 95,

Corporate Author : ARMY RESEARCH INST FOR THE BEHAVIORAL AND SOCIAL SCIENCES ALEXANDRIA VA

Personal Author(s) : Singer, Michael J. ; Ehrlich, Jennifer ; Cinq-Mars, Stephen

PDF Url : ADA306720

Report Date : DEC 1995

Pagination or Media Count : 51

Abstract : The U.S. Army Research Institute for the Behavioral and Social Sciences has an ongoing program of investigation into the requirements for using Virtual Environments (VE) to train dismounted soldiers. As a part of this program, an experiment was conducted investigating the effects of different parameters of VE in the performance of simple, representative tasks. This report provides background information about VE display problems, head-coupling in VE, presence, field dependence, and simulator sickness. The tasks used in the experiment are generic to performance in VEs and would form the basis both of training programs and general soldier tasks. Visual presentation of the tasks was either through a Stereoscopic Head Mounted Display (HMD) or a Monoscopic HMD, and subjects could either move their Field of View (FOV) by moving their head (coupled) or could not move the FOV (uncoupled). The five tasks used were (1) movement through a sequence of rooms and doorways, (2) acquisition of a fixed target, (3) tracking a moving object, (4) manipulation of an object, and (5) distance estimation. In general, performance of all tasks improved over repeated trials. In the distance estimation task the estimations were relatively worse at shorter distances. However, the error was significantly lessened with stereoscopic presentations, and was also significantly improved when coupling was used, although these factors did not interact with one another. Performance in the other tasks was not significantly effected by presentation mode or head-coupling. The distance task errors and the lack of significant differences in performance of the other tasks raise questions on the claimed general gain in task performance through the increased reality of stereoscopic presentations and head-coupling.

Descriptors :   *ARMY TRAINING, *VIRTUAL REALITY, IMAGE PROCESSING, SCENARIOS, SPATIAL DISTRIBUTION, ARMY RESEARCH, SKILLS, TRAINING DEVICES, ARMY PERSONNEL, PERFORMANCE(HUMAN), INFANTRY, BATTLEFIELDS, COGNITION, MOVING TARGETS, ERROR ANALYSIS, COMPUTER VISION, VISUAL PERCEPTION, DATA DISPLAYS, MAN COMPUTER INTERFACE, RANGE(DISTANCE), MOTION SICKNESS, HELMET MOUNTED DISPLAYS, HEAD UP DISPLAYS, INDIVIDUALIZED TRAINING, SURFACE NAVIGATION, PSYCHOMOTOR TESTS, PSYCHOPHYSIOLOGY, STEREOSCOPIC DISPLAY SYSTEMS, CUES(STIMULI), DISTRIBUTED INTERACTIVE SIMULATION.

Subject Categories : Cybernetics
      Military Forces and Organizations
      Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE