Game Experience Lab, Human Technology Interaction group, Eindhoven University of Technology, PO Box 513, Eindhoven, 5600MB, The Netherlands.
J Neuroeng Rehabil. 2012 Oct 5;9:73. doi: 10.1186/1743-0003-9-73.
Many contemporary systems for neurorehabilitation utilize 3D virtual environments (VEs) that allow for training patients' hand or arm movements. In the current paper we comparatively test the effectiveness of two characteristics of VEs in rehabilitation training when utilizing a 3D haptic interaction device: Stereo Visualization (monoscopic vs stereoscopic image presentation) and Graphic Environment (2.5D vs 3D).
An experimental study was conducted using a factorial within-subjects design. Patients (10 MS, 8 CVA) completed three tasks, each including a specific arm-movement along one of three directional axes (left-right, up-down and forward-backward).
The use of stereoscopy within a virtual training environment for neurorehabilitation of CVA and MS patients is most beneficial when the task itself requires movement in depth. Further, the 2.5D environment yields the highest efficiency and accuracy in terms of patients' movements. These findings were, however, dependent on participants' stereoscopic ability.
Despite the performance benefits of stereoscopy, our findings illustrate the non-triviality of choices of using stereoscopy, and the type of graphic environment implemented. These choices should be made with the task and target group, and even the individual patient in mind.
许多现代神经康复系统都利用 3D 虚拟环境（VE）来训练患者的手部或手臂运动。在目前的研究中，我们使用 3D 触觉交互设备，比较测试了 VE 中两种特性在康复训练中的有效性：立体视觉（单目与立体图像呈现）和图形环境（2.5D 与 3D）。
采用完全随机实验设计，对 10 名 MS 患者和 8 名 CVA 患者进行了一项实验研究。患者完成了三个任务，每个任务都包括沿着三个方向轴（左右、上下和前后）中的一个特定手臂运动。
对于 CVA 和 MS 患者的神经康复，在虚拟训练环境中使用立体视觉最有益于需要深度运动的任务。此外，2.5D 环境在患者运动的效率和准确性方面表现最佳。然而，这些发现取决于参与者的立体视觉能力。
尽管立体视觉具有性能优势，但我们的研究结果表明，选择使用立体视觉以及实施的图形环境类型具有一定的复杂性。在选择时，应考虑任务、目标人群，甚至是个体患者的特点。
