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Bes0238442 and the falk trust a real-time haptic/graphic demonstration of how error augmentation can enhance learning *.
| Content Provider | CiteSeerX |
|---|---|
| Author | Wei, Yejun Patton, James Bajaj, Preeti Scheidt, Robert |
| Abstract | Abstract – We developed a real-time controller for a 2 degree-of-freedom robotic system using xPC Target. Th is system was used to investigate how different methods of performance error feedback can lead to faster and more complete motor learning in individuals asked to compensate for a novel visuo-motor transformation (a 30 degree rotation). Four groups of human subjects were asked to reach with their unseen arm to visual targets surrounding a central starting location. A cursor tracking hand motion was provided during each reach. For one group of subjects, deviations from the “ideal ” compensatory hand movement (i.e. trajectory errors) were amplified with a gain of 2 whereas another group was provided visual feedback with a gain of 3.1. Yet another group was provided cursor feedback wherein the cursor was rotated by an additional (constant) offset angle. We compared the rates at which the hand paths converged to the steady-state trajectories. Our results demonstrate that error-augmentation can improve the rate and extent of motor learning of visuomotor rotations in healthy subjects. Furthermore, our results suggest that both error amplification and offset-augmentation may facilitate neuro-rehabilitation strategies that restore function in brain injuries such as stroke. Index Terms – neuro-robotics, error augmentation, xPC Target, motor learning, and visual distortion I. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Error Augmentation Xpc Target Motor Learning Visual Distortion Degree-of-freedom Robotic System Real-time Controller Offset Angle Trajectory Error Visual Target Visual Feedback Steady-state Trajectory Unseen Arm Different Method Complete Motor Learning Hand Motion Ideal Compensatory Hand Movement Degree Rotation Novel Visuo-motor Transformation Cursor Feedback Index Term Neuro-robotics Human Subject Performance Error Feedback Brain Injury Healthy Subject Visuomotor Rotation Hand Path Neuro-rehabilitation Strategy |
| Content Type | Text |
