Upper limb disability due to neurological disorders or other factors restricts computer interaction for affected individuals using a generic optical mouse. This work reports the findings of a comparative evaluation of Auxilio, a sensor-based wireless head-mounted Assistive Mouse Controller (AMC), that facilitates computer interaction for such individuals. Combining commercially available, low-cost motion and infrared sensors, Auxilio utilizes head movements and cheek muscle twitches for mouse control. Its performance in pointing tasks with subjects without motor impairments has been juxtaposed against a commercially available and patented vision-based head-tracking AMC developed for similar stakeholders. Furthermore, our study evaluates the usability of Auxilio using the System Usability Scale, supplemented by a qualitative analysis of participant interview transcripts to identify the strengths and weaknesses of both AMCs. Experimental results demonstrate the feasibility and effectiveness of Auxilio, and we summarize our key findings into design guidelines for the development of similar future AMCs.

翻译：由神经系统疾病或其他因素导致的上肢功能障碍限制了受影响个体使用通用光学鼠标进行计算机交互。本研究报告了对Auxilio——一种基于传感器的无线头戴式辅助鼠标控制器（AMC）——的比较评估结果，该设备旨在为此类人群提供计算机交互支持。Auxilio结合市售的低成本运动和红外传感器，利用头部运动和脸颊肌肉抽动实现鼠标控制。我们将其在无运动障碍受试者指向任务中的表现，与为类似用户群体开发的商用专利视觉头部追踪AMC进行了对比分析。此外，本研究采用系统可用性量表评估Auxilio的可用性，并通过参与者访谈记录的定性分析来识别两种AMC的优势与不足。实验结果表明Auxilio具备可行性与有效性，我们将核心发现总结为未来开发同类AMC的设计指南。