Abstract

PERALTA, J.A; REYES LOPEZ, P; DELGADO LEZAMA, R  and  YEPEZ, E. Aspectos dinámicos del movimiento lento del dedo índice. Rev. mex. fis. [online]. 2008, vol.54, n.1, pp.78-85. ISSN 0035-001X.

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.

Keywords : Force measurement; movement sensor; data acquisition.

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