IEEE Trans Neural Syst Rehabil Eng. 2020 Jul;28(7):1566-1572. doi: 10.1109/TNSRE.2020.2996820.
The purpose of this study is to investigate the effects of different cursor click modalities in an alternative computer access device using accelerometry from head tilt to control cursor movement. Eighteen healthy adults performed a target acquisition task using the device with five different cursor click modalities, while maintaining cursor movement control via accelerometry. Three dwell-based click modalities with dwell times of 0.5 s, 1.0 s, and 1.5 s were tested. Two surface electromyography-based click modalities - with the sensor placed next to the eye for a blink and above the eyebrow for a brow raise - were tested. Performance was evaluated using metrics of target selection accuracy, path efficiency, target selection time, and user effort. Surface electromyography-based click modalities were as fast as the shortest dwell time and as accurate as the longest dwell time, and also minimized user effort. Three of the four performance metrics were not affected by sensor location. Future studies will investigate if these results are similar in individuals with neuromuscular disorders.
本研究旨在探讨使用加速度计从头部倾斜来控制光标移动的替代计算机接入设备中不同光标点击方式的效果。十八名健康成年人使用该设备进行目标获取任务，同时使用加速度计保持光标移动控制，使用五种不同的光标点击方式。测试了三种基于停留时间的点击方式，停留时间分别为 0.5 秒、1.0 秒和 1.5 秒。还测试了两种基于表面肌电图的点击方式 - 将传感器放置在眼睛旁边用于眨眼，以及放置在眉毛上方用于挑眉。使用目标选择准确性、路径效率、目标选择时间和用户努力的指标来评估性能。基于表面肌电图的点击方式与最短停留时间一样快，与最长停留时间一样准确，并且还最大限度地减少了用户的努力。四个性能指标中的三个不受传感器位置的影响。未来的研究将调查这些结果在患有神经肌肉疾病的个体中是否相似。
