Spatial control of arm movements | Zendy

Pietro Morasso | Zendy

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Spatial control of arm movements

Author(s) -

Pietro Morasso

Publication year - 1981

Publication title -

experimental brain research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.782

H-Index - 172

eISSN - 1432-1106

pISSN - 0014-4819

DOI - 10.1007/bf00236911

Subject(s) - elbow , trajectory , movement (music) , angular velocity , motor control , corollary , point (geometry) , mathematics , physical medicine and rehabilitation , computer science , physics , psychology , artificial intelligence , communication , neuroscience , geometry , anatomy , combinatorics , biology , classical mechanics , medicine , astronomy , acoustics

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.

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