在苹果iPad上进行速度准确性测试，可为患有肌张力障碍的儿童提供上肢运动表现的定量测试。
Speed-accuracy testing on the Apple iPad provides a quantitative test of upper extremity motor performance in children with dystonia.
作者信息
Bertucco Matteo, Sanger Terence D
机构信息
Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA.
Departments of Biomedical Engineering, Child Neurology, and Biokinesiology, University of Southern California, Los Angeles, CA, USA Children's Hospital of Los Angeles, Los Angeles, CA, USA
出版信息
J Child Neurol. 2014 Nov;29(11):1460-6. doi: 10.1177/0883073813494265. Epub 2013 Aug 21.
The currently available scales for quantitative measurement of the severity of childhood dystonia require human observer ratings and provide poor granularity in the scores for individual limbs. We evaluated the use of new-generation high-quality touchscreens (an iPad) according with the Fitts law, which is a mathematical model that takes into account the relation between movement time and the task accuracy. We compared the abilities of healthy subjects and children with dystonia. The linear relation described by Fitts law held for all the groups. The movement time and the information transmitted were age and severity related. Our results provide evidence for the usability and validity of using Fitts law as a quantitative diagnostic tool in children with dystonia. Furthermore, testing on touchscreen tablets may help to guide the design of user interfaces to maximize the communication rate for children who depend upon assistive communication devices.
目前可用于定量测量儿童肌张力障碍严重程度的量表需要人工观察者评分，且各个肢体得分的粒度较差。我们根据菲茨定律评估了新一代高质量触摸屏（iPad）的使用情况，该定律是一个考虑了运动时间与任务准确性之间关系的数学模型。我们比较了健康受试者和肌张力障碍儿童的能力。菲茨定律所描述的线性关系在所有组中均成立。运动时间和传输的信息与年龄及严重程度相关。我们的结果为将菲茨定律用作儿童肌张力障碍的定量诊断工具的可用性和有效性提供了证据。此外，在触摸屏平板电脑上进行测试可能有助于指导用户界面设计，以最大限度提高依赖辅助通信设备的儿童的通信速率。
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