Motor Performance After Unilateral Hemisphere Damage in Patients With Tumor

K. York Haaland, Charles S. Cleeland, Daniel Carr

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Hemispheric asymmetry of sensorymotor control has been hypothesized on the basis of clinical and experimental data, but discrepant data indicate asymmetry may vary with task requirements. To examine this possibility, the performance of normal controls and patients with right or left hemispheric tumors were compared on a variety of motor tasks of varying complexity. Group differences were significant only for the two most complex of six tasks; since these two tasks differ in quality (proximal steadiness and distal dexterity), it is unlikely that quality differences are crucial. On these tasks, the group with left hemisphere damage demonstrated bilateral impairment while the right hemisphere group's deficits were contralateral to lesion site. These results support previous data and Liepmann's hypothesis of hemispheric asymmetry of sensory-motor control. Task complexity and the more specific hypothesis of sensory-motor sequencing are important factors influencing hemispheric asymmetry of control.

Original languageEnglish (US)
Pages (from-to)556-559
Number of pages4
JournalArchives of neurology
Volume34
Issue number9
DOIs
StatePublished - Sep 1977
Externally publishedYes

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Clinical Neurology

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