School-aged children spend 31-60% of their time at school performing handwriting, which is a complex perceptual-motor skill composed of a coordinated combination of fine graphomotor movements. As up to 30% of them experience graphomotor difficulties (GD), timely diagnosis of these difficulties and therapeutic intervention are of great importance. At present, an objective, computerized decision support system for the identification and assessment of GD in school-aged children is still missing. In this study, we propose three novel advanced handwriting parametrization techniques based on modulation spectra, fractional order derivatives, and tunable Q-factor wavelet transform to improve the identification of GD using online handwriting. For this purpose, we analyzed signals acquired from 7 basic graphomotor tasks performed by 53 children attending 3rd and 4th grade at several primary schools around the Czech Republic. Combining the newly proposed features with the conventionally used ones, we were able to identify GD with 84% accuracy. In this study, we showed that using advanced parametrization of basic graphomotor movements can be potentially used to improve our capabilities of quantifying problems with the development of legible, fast-paced handwriting, and help with the early diagnosis of handwriting difficulties frequently manifested in developmental dysgraphia.
机构:
Morehouse Sch Med, Fac Dev Program, MSTC, ALP,Dept Family Med, Atlanta, GA 30310 USAMorehouse Sch Med, Fac Dev Program, MSTC, ALP,Dept Family Med, Atlanta, GA 30310 USA
Taylor, Vera S.
Ye, Jiali
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Morehouse Sch Med, Natl Ctr Primary Care, Atlanta, GA 30310 USAMorehouse Sch Med, Fac Dev Program, MSTC, ALP,Dept Family Med, Atlanta, GA 30310 USA
Ye, Jiali
Mack, Dominic
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Morehouse Sch Med, Natl Ctr Primary Care, Atlanta, GA 30310 USAMorehouse Sch Med, Fac Dev Program, MSTC, ALP,Dept Family Med, Atlanta, GA 30310 USA
Mack, Dominic
Fry-Johnson, Yvonne
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Morehouse Sch Med, Dept Pediat, Atlanta, GA 30310 USA
Morehouse Sch Med, Dept Maternal & Child Hlth Res, Atlanta, GA 30310 USAMorehouse Sch Med, Fac Dev Program, MSTC, ALP,Dept Family Med, Atlanta, GA 30310 USA
Fry-Johnson, Yvonne
Smith, Quentin
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Morehouse Sch Med, Dept Psychiat & Behav Sci, Atlanta, GA 30310 USAMorehouse Sch Med, Fac Dev Program, MSTC, ALP,Dept Family Med, Atlanta, GA 30310 USA
Smith, Quentin
Harris, Charlie L.
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Morehouse Sch Med, Dept Psychiat & Behav Sci, Atlanta, GA 30310 USAMorehouse Sch Med, Fac Dev Program, MSTC, ALP,Dept Family Med, Atlanta, GA 30310 USA