Schomaker, L.R.B. & Plamondon, R. (1990).
The Relation between Pen Force and Pen-Point Kinematics in Handwriting.
Biological Cybernetics, 63, 277-289.


This study investigates the spectral coherence and time-domain
correlation between pen pressure (axial pen force, APF) and several
kinematic variables in drawing simple patterns and in writing cursive
script. Two types of theories are prevalent: "biomechanical" and
"central" explanations for the force variations during writing. Findings
show that overall coherence is low (