Handwriting kinematic model parameters changes with schooling
Introduction.In childhood and adolescence,writing plays a crucial role in school performance,with important implications for motor and cognitive development.In recent years,the analysis of handwriting movements has been directly performed through digitizing tablets.This technology allows objective quantitative kinematic analyses of writing quality and has been used to characterize the handwriting process by measuring parameters extracted from the basic elements of writing,such as strokes and components.On the other hand,the hand movement has also been studied from a modeling point of view,starting from an agonist-antagonist control system hypothesis.In this study,we modified the procedure for the parameter identification of the Lognormal model of the velocity profile used to fit curvilinear velocity of handwriting movements.According to the Kinematic Theory of rapid human movements,these parameters contain information on both the motor commands and the timing properties of neuromuscular system.Materials and Methods.The proposed algorithm is described and evaluated for two writing tasks performed by 205 school children belonging to different grades in order to estimate the influence of schooling on these parameters.Results and Discussion.The results support the effectiveness of the Kinematic Theory for the synthesis of handwriting pattern with low influence of schooling on parameter values.In the next step the relation between the log-normal parameters and the physiology of the involved neuromuscular system producing this kind of velocity profile has to be studied as well as the dependence of the parameters on the linguistic competences required by the task.
Stroke handwriting kinematic model tablet
M. Genna A. Accardo
Department of Industrial Engineering & Information Technology, University of Trieste, Via Valerio 10, Trieste, Italy
国际会议
World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))
北京
英文
391-394
2012-05-26（万方平台首次上网日期，不代表论文的发表时间）