Department of Biomedical Engineering, Oregon Health and Science University, 3303 SW Bond Avenue MC: CH13B, Portland, OR 97239, USA.
Behav Res Methods. 2011 Dec;43(4):903-9. doi: 10.3758/s13428-011-0100-1.
Motor speed is an important indicator and predictor of both cognitive and physical function. One common assessment of motor speed is the finger-tapping test (FTT), which is typically administered as part of a neurological or neuropsychological assessment. However, the FTT suffers from several limitations, including infrequent in-person administration, the need for a trained assessor and dedicated equipment, and potential short-term sensory-motor fatigue. In this article, we propose an alternative method of measuring motor speed, with face validity to the FTT, that addresses these limitations by measuring the interkeystroke intervals (IKI) of familiar and repeated login data collected in the home during a subject's regular computer use. We show significant correlations between the mean tapping speeds from the FTT and the median IKIs of the nondominant (r = .77) and dominant (r = .70) hands, respectively, in an elderly cohort of subjects living independently. Finally, we discuss how the proposed method for measuring motor speed fits well into the framework of unobtrusive and continuous in-home assessment.
电机速度是认知和身体功能的重要指标和预测因子。电机速度的一种常见评估方法是指敲击测试（FTT），通常作为神经学或神经心理学评估的一部分进行。然而，FTT 存在几个局限性，包括不常见的面对面管理、需要经过训练的评估者和专用设备，以及潜在的短期感觉运动疲劳。在本文中，我们提出了一种替代的电机速度测量方法，该方法通过测量在家中使用计算机时日常收集的熟悉和重复登录数据的键间间隔（IKI），具有与 FTT 相同的表面有效性，可解决这些局限性。我们在独立生活的老年受试者队列中分别显示了 FTT 的平均敲击速度与非优势（r =.77）和优势（r =.70）手的中位数 IKI 之间的显著相关性。最后，我们讨论了测量电机速度的建议方法如何很好地适应非侵入式和连续家庭评估的框架。
