On the form of the internal model for reaching

Christopher A. Buneo, Jyl Boline, John F. Soechting, Richard E. Poppele

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


We investigated, by using simulations, possible mechanisms responsible for the errors in the direction of arm movements exhibited by deafferented patients. Two aspects of altered feedforward control were evaluated: the inability to sense initial conditions and the degradation of an internal model. A simulation which assumed no compensation for variations in initial arm configuration failed to reproduce the characteristic pattern of errors. In contrast, a simulation that assumed random variability in the generation of joint torque resulted in a distribution of handpaths which resembled some aspects of the pattern of errors exhibited by deafferented patients.

Original languageEnglish (US)
Pages (from-to)467-479
Number of pages13
JournalExperimental Brain Research
Issue number3
StatePublished - Jun 1 1995
Externally publishedYes


  • Human
  • Joint torque
  • Motor control
  • Proprioception
  • Reaching

ASJC Scopus subject areas

  • Neuroscience(all)


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