Functional lateralization of the human premotor cortex during sequential movements

Petr Hlustík, Ana Solodkin, Rao P. Gullapalli, Douglas C. Noll, Steven L. Small

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

A neurological truism is that each side of the brain controls movements on the opposite side of the body. Yet some left hemisphere brain lesions cause bilateral impairment of complex motor function and/or ideomotor apraxia. We report that the left dorsal premotor cortex of normal right-handed people plays a fundamental role in sequential movement of both right and left hands. Subjects performed sequential finger movements during functional magnetic resonance imaging of the motor cortices. In right-handed subjects, the volume of activated dorsal premotor cortex showed a left hemispheric predominance during hand movements. We suggest that the observed left premotor dominance contributes to the lateralization found in lesion studies.

Original languageEnglish (US)
Pages (from-to)54-62
Number of pages9
JournalBrain and Cognition
Volume49
Issue number1
DOIs
StatePublished - 2002
Externally publishedYes

Keywords

  • Finger
  • Functional magnetic resonance imaging
  • Handedness
  • Hemispheric dominance
  • Human
  • Lateralization
  • Premotor cortex
  • Sequential movement

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Cognitive Neuroscience

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