Publication details

Advanced Parametrization of Graphomotor Difficulties in School-Aged Children

Authors

GALÁŽ Z. MUCHA J. ZVONČÁK V. MEKYSKA J. SMÉKAL Z. ŠAFÁROVÁ Katarína ONDRÁČKOVÁ Anežka URBÁNEK Tomáš HAVIGEROVÁ Jana Marie BEDNÁŘOVÁ Jiřina FAUNDEZ-ZANUY M.

Year of publication 2020
Type Article in Periodical
Magazine / Source IEEE Access
MU Faculty or unit

Faculty of Arts

Citation
Web https://ieeexplore.ieee.org/abstract/document/9119411
Doi http://dx.doi.org/10.1109/ACCESS.2020.3003214
Keywords advanced parametrization; computerized analysis; graphomotor difficulties; machine learning; online handwriting;
Description 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.
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