Ben-Pazi Hilla, Ishihara Abraham, Kukke Sahana, Sanger Terence D
Neuropediatric Unit, Shaare Zedek Medical Center, Jerusalem 91031, Israel.
J Child Neurol. 2010 Jun;25(6):674-80. doi: 10.1177/0883073809342592. Epub 2009 Sep 30.
The aim of this study was to determine the effect of mechanical properties of the pen on quality of handwriting in children. A total of 22 school-aged children, aged 8 to 14 years, wrote in cursive using a pen attached to a robot. The robot was programmed to increase the effective weight (inertia) and viscosity of the pen. Speed, frequency, variability, and quality of the 2 handwriting samples were compared. Increased inertia and viscosity improved handwriting quality in 85% of children (P < or = .05). Handwriting quality did not correlate with changes in speed, suggesting that improvement was not due to reduced speed. Measures of movement variability remained unchanged, suggesting improvement was not due to mechanical smoothing of pen movement by the robot. Because improvement was not explained by reduced speed or mechanical smoothing, we conclude that children alter handwriting movements in response to pen mechanics. Altered movement could be caused by changes in sensory feedback.
本研究的目的是确定笔的机械性能对儿童书写质量的影响。共有22名8至14岁的学龄儿童使用连接到机器人的笔进行草书书写。对机器人进行编程，以增加笔的有效重量（惯性）和粘度。比较了两份手写样本的速度、频率、变异性和质量。惯性和粘度增加使85%的儿童书写质量得到改善（P≤0.05）。书写质量与速度变化无关，这表明书写质量的提高并非由于速度降低。运动变异性的测量结果保持不变，这表明书写质量的提高并非由于机器人对笔的运动进行了机械平滑处理。由于书写质量的提高不能用速度降低或机械平滑来解释，我们得出结论，儿童会根据笔的力学性能改变书写动作。动作的改变可能是由感觉反馈的变化引起的。
