Students from Haptics, Kinematics/Dynamics, and Modern Biomedical Technologies demonstrated their projects, April 25, 2013.
Bimanual Circle Tracing and Synchronous Tapping on a Touchpad Device|
Many interactions with virtual environments make use of bimanual motions. These interactions are becoming ever more commonplace with the implementation of touchscreen devices in a myriad of communication applications. Finding the best symmetry modes for certain types and patterns of motion can make these interfaces more comfortable and easy to use. This project examined circular tracing and synchronous tapping in various bimanual symmetry modes and at varying speeds to determine which tasks were more difficult for participants to accurately perform. The study found that varying speeds with randomized direction during bimanual tracing of circles had no significant result on the ability of the participants to accurately maintain the pattern. Shifting the phase of the circles caused statistically significant differences in the offset error and showed that bimanual motion may break down into unimanual motion with simple phase shifts. The tapping trials found that for 3:2 and 2:3 ratio patterns, the subjects experienced the most difficulty and the error was significantly different.