Aspectos dinámicos del movimiento lento del dedo índice

J.A. Peralta, P. Re, es López. , R. Delgado Lezama, E. Yépez


In this work we present the design and construction of a high precision meter for the movement of the index finger under conditions that require slow and precise movements. The apparatus uses a mechanical device coupled to an induction coil, the signals are amplified, filtered and captured by a personal computer for their further processing. The displacements, speeds and accelerations that produce the involved muscles can be known with great precision. The device was proven in a sample of 15 individuals, obtaining that the precise movements of the finger are made up of a constant force that balances the load and of small impulses producing pulses of very slow speed. This observation of pulsed movements and its quantification constitutes a novel result. The apparatus is able to detect neuro-motor pathologies. The advantages of this meter are: their low cost, their operation easiness and the precision with which the subtle movements of the index finger can be measured.


Force measurement; movement sensor; data acquisition

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Revista Mexicana de Física

ISSN: 2683-2224 (on line), 0035-001X (print)

Bimonthly publication of Sociedad Mexicana de Física, A.C.
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