Perturbation of the grasp component of a prehension movement in a subject with hemiParkinson's disease

U. Castiello, K. M.B. Bennett, C. H. Adler, G. E. Stelmach

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The response to perturbation of the manipulation component during prehension was assessed for both hands of a hemiParkinson and of a Control subject. With perturbed trials, the hemiParkinson showed the same pattern as the control: a reorganization of kinematic parameters and no increase of movement time. However, for both limbs of the hemiParkinson subject there was a transition phase from precision grip to whole hand prehension-this was more pronounced for the affected limb. The manipulation component did not show a delay of activation [2]. Thus the global dysfunction in the performance of sequential movement patterns was related to aspects of task predictability.

Original languageEnglish (US)
Pages (from-to)717-723
Number of pages7
JournalNeuropsychologia
Volume31
Issue number7
DOIs
StatePublished - Jul 1993

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience
  • Behavioral Neuroscience

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