Spatial control of arm movements
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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.
Key wordsArm trajectories Multiple degrees of freedom movements Tangential velocity Central motor commands
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- Benati M, Morasso P, Tagliasco V (1980a) The inverse kinematic problem for anthropomorphic manipulator arma: representation and solution by means of an analog model of arm geometry. Technical Report, E.E. Department, Genoa UniversityGoogle Scholar
- Benati M, Gaglio S, Morasso P, Tagliasco V, Zaccaria R (1980b) Anthropomorphic robotics. I. Representing mechanical complexity. II. Analysis of manipulator dynamics and the output motor impedance. Biol Cybern 38: 125–140, 141–150Google Scholar
- Bernstein N (1935) The problem of the interrelation of coordination and localization. Arch Biol Sci 38: 15–59. Reprinted in: Bernstein N (1967) The co-ordination and regulation of movements. Pergamon Press, OxfordGoogle Scholar
- Bryan WL (1892) On the development of volontary motor ability. Am J Psychol 5: 125Google Scholar
- Lashley KS (1951) The problem of serial order in behavior. In: Jeffress LA (ed) Cerebral mechanisms in behaviour. Hafner, New York, pp 112–136Google Scholar
- Nevins JL, Whitney DE (1973) The force vector assembly concept. Report E-2754, M.I.T., Computer Sci., Draper Lab., Cambridge, MAGoogle Scholar
- Paul R (1979) Manipulator cartesian path control IEEE Trans Syst Man Cybern 9: 702–711Google Scholar
- Pellionisz A, Llinás R (1980) Tensorial approach to the geometry of brain function. Cerebellar coordination via a metric tensor. Neuroscience 5: 1125–1136Google Scholar
- Russell DG (1976) Spatial location cues and movement production. In: Stelmach GS (ed) Motor control. Issues and trends. Academic Press, New York, pp 67–83Google Scholar
- Stetson RH, McDill JA (1923) Mechanisms of different types or movements. Psychol Monogr 32: 18Google Scholar
- Viviani P, Terzuolo CA (1980) Space-Time invariance in learned motor skills. In: Stelmach GS, Requin J (eds) Tutorial in motor behaviour. North Holland, Amsterdam, pp 525–533Google Scholar