The mechanical behavior of the human forearm in response to transient perturbations

F. Lacquaniti, F. Licata, J. F. Soechting

Research output: Contribution to journalArticlepeer-review

Abstract

Static and dynamic components of mechanical impedance of human forearm were evaluated by applying two kinds of perturbations: 1) large viscoelastic loads, and 2) small pseudo-random perturbations. When the task involved the active resistance of the perturbations, both stiffness and viscosity increased relatively to their values in the passive task, the increment in stiffness being larger than that in viscosity. The time course of such changes was investigated during the transition between the two operating points defined by the instructions "do not resist" and "resist" the applied perturbations. The changes in stiffness and viscosity were relatively slow, those in the latter lagging behind those in the former.

Original languageEnglish
Pages (from-to)35-46
Number of pages12
JournalBiological Cybernetics
Volume44
Issue number1
DOIs
Publication statusPublished - May 1982

ASJC Scopus subject areas

  • Biophysics

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