, Volume 42, Issue 2, pp 223-227

Spatial control of arm movements

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Summary

Human subjects were instructed to point one hand to different visual targets which were randomly sequenced, using a paradigm which allowed two degrees of freedom (shoulder, elbow). The time course of the hand trajectory and the joint angular curves were observed. The latter exhibited patterns which change markedly for different movements, whereas the former preserve similar characteristics (in particular, a single peaked tangential velocity curve). The hypothesis is then formulated that the central command for these movements is formulated in terms of trajectories of the hand in space.

Research supported by the Italian Research Council (Bilateral Research Contract) and by N.I.H. Grants NS 09343 and AM 26710