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- Title
Lateralized cognitive processes and lateralized task control in the human brain.
- Authors
Stephan, Klaas E; Marshall, John C; Friston, Karl J; Rowe, James B; Ritzl, Afra; Zilles, Karl; Fink, Gereon R
- Abstract
The principles underlying human hemispheric specialization are poorly understood. We used functional magnetic resonance imaging of letter and visuospatial decision tasks with identical word stimuli to address two unresolved problems. First, hemispheric specialization depended on the nature of the task rather than on the nature of the stimulus. Second, analysis of frontal candidate regions for cognitive control showed increased coupling between left anterior cingulate cortex (ACC) and left inferior frontal gyrus during letter decisions, whereas right ACC showed enhanced coupling with right parietal areas during visuospatial decisions. Cognitive control is thus localized in the same hemisphere as task execution.
- Publication
Science (New York, N.Y.), 2003, Vol 301, Issue 5631, p384
- ISSN
1095-9203
- Publication type
Journal Article
- DOI
10.1126/science.1086025