![]() Results are interpreted with respect to multiple resource theory, and constraints on conforming to design guidelines are noted. However, no design supported more accurate performance than the integrated display. In Experiments 5 and 6, alternative designs were tested, including a design with a seemingly more natural mapping of HR to vibrotactile stimulation. In Experiments 3 and 4, ongoing tasks with low or high task load were introduced high load worsened participants' response accuracy and speed at identifying vital signs. In Experiment 2, incidental auditory and visual cues were removed and performance was still greater than 90% for the integrated display. In Experiment 1, participants identified changes in HR and SpO₂ with greater than 90% accuracy while using vibrotactile displays configured in either an integrated or a separated format. We examined how effectively participants could identify changes in vibrotactile representations of patient heart rate (HR) and oxygen saturation (SpO₂). Vibrotactile displays can provide patient information in vibrotactile patterns that are felt regardless of the worker's location. Healthcare workers often monitor patients while moving between different locations and tasks, and away from conventional monitoring displays. Soldiers also commented that they were better able to focus more attention on negotiating obstacles and on area situational awareness when receiving tactile signals than when maintaining visual contact with their leaders in order to receive standard hand and arm signals. Results demonstrated that Soldiers performing IMT were able to receive, interpret, and accurately respond to the tactile commands faster than when the information was passed by leaders in the front of a wedge formation and leaders in the back of a wedge formation using conventional hand and arm signals. The tactile signal patterns were intuitive and easy for the Soldiers to understand less than 10 minutes training was required for the Soldiers to become accurate in interpreting the four tactile signals used during the experiment. The accuracy of signal interpretation and response times was recorded. Tactile and visual hand and arm signals were sent to the Soldiers as they negotiated the course. Infantry Soldiers, wearing their standard uniforms and body armor, negotiated a woodland individual movement technique (IMT) obstacle course while simulating a combat patrol. ![]() Individual or multiple tactors can be activated by an operator using a remote wireless control system. ![]() The tactile belt, developed by UCF, consists of eight tactors (tactile drivers) arranged equidistant around the Soldier's waist. The purpose of this experiment was to evaluate Soldiers abilities to interpret and respond to tactile commands compared to their abilities to interpret and respond to standard visual hand and arm signals given from leaders in front of and behind them during movement. Army Research Laboratory and the University of Central Florida. This study was conducted jointly by the U.S. ![]()
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