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Analysis of the pen pressure and grip force signal during basic drawing tasks: The timing and speed changes impact drawing characteristics

Abstract : Writing is a complex fine and trained motor skill, involving complex biomechanical and cognitive processes. In this paper, we propose the study of writing kinetics using three angles: the pen-tip normal force, the total grip force signal and eventually writing quality assessment. In order to collect writing kinetics data, we designed a sensor collecting these characteristics simultaneously. Ten healthy right-handed adults were recruited and were asked to perform four tasks: first, they were instructed to draw circles at a speed they considered comfortable; they then were instructed to draw circles at a speed they regarded as fast; afterwards, they repeated the comfortable task compelled to follow the rhythm of a metronome; and eventually they performed the fast task under the same timing constraints. Statistical differences between the tasks were computed, and while pen-tip normal force and total grip force signal were not impacted by the changes introduced in each task, writing quality features were affected by both the speed changes and timing constraint changes. This verifies the already-studied speed-accuracy trade-off and suggest the existence of a timing constraints-accuracy trade-off.
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https://hal.archives-ouvertes.fr/hal-01585955
Contributor : Arthur Gatouillat Connect in order to contact the contributor
Submitted on : Tuesday, September 12, 2017 - 11:30:21 AM
Last modification on : Wednesday, June 2, 2021 - 11:02:10 AM

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Arthur Gatouillat, Antoine Dumortier, Subashan Perera, Youakim Badr, Claudine Gehin, et al.. Analysis of the pen pressure and grip force signal during basic drawing tasks: The timing and speed changes impact drawing characteristics. Computers in Biology and Medicine, Elsevier, 2017, 87, pp.124-131. ⟨10.1016/j.compbiomed.2017.05.020⟩. ⟨hal-01585955⟩

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