Elble R J, Sinha R, Higgins C
Department of Medicine, Southern Illinois University School of Medicine, Springfield 62794-9230.
J Neurosci Methods. 1990 Jun;32(3):193-8. doi: 10.1016/0165-0270(90)90140-b.
Handwriting and drawing are commonly employed in the clinical assessment of tremor. These tasks have been quantified heretofore by subjective rating schemes, which are incapable of providing precise measures of the amplitude and frequency of tremor. A commercially-available digitizing tablet and personal computer can be interfaced so as to reliably record any pathologic tremor that is induced by writing or drawing. Numerical differentiation and spectral analysis can be used to conveniently quantify the amplitude and frequency of tremor. However, digitizing tablets lack sufficient sensitivity to measure physiologic tremor.
书写和绘图常用于震颤的临床评估。迄今为止，这些任务通过主观评分方案进行量化，而主观评分方案无法提供震颤幅度和频率的精确测量。市售的数字化数位板和个人计算机可以连接，以便可靠地记录书写或绘图引起的任何病理性震颤。数值微分和频谱分析可用于方便地量化震颤的幅度和频率。然而，数字化数位板缺乏足够的灵敏度来测量生理性震颤。
