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[Cerebral laterality and interhemispheric connections: neurobiologic aspects]
1Brain Research Institute, University of California, Los Angeles 90024.
Archivos De Biologia Y Medicina Experimentales
|December 1, 1989
Summary
This review explores anatomical links to brain lateralization, focusing on cortical asymmetries in language areas and the corpus callosum's role in connectivity. Evidence supports structural differences correlating with functional brain lateralization.
Area of Science:
- Neuroscience
- Neuroanatomy
Context:
- Cerebral lateralization, the brain's functional asymmetry, is increasingly understood through its anatomical underpinnings.
- Cortical asymmetries and commisural connectivity are key areas of investigation.
Purpose:
- To review and synthesize evidence for two primary anatomical correlates of cerebral lateralization: cortical asymmetries and commisural connectivity.
- To analyze the relationship between the corpus callosum's structure and brain lateralization parameters like sex and handedness.
Summary:
- Significant cortical asymmetries exist in language-related brain regions, observable at both gross anatomical and cytoarchitectonic levels.
- These asymmetries correlate with the degree of functional lateralization.
- The corpus callosum's role in brain lateralization is examined, including controversial findings and developmental aspects, leading to new hypotheses.
Impact:
- Provides a comprehensive overview of anatomical correlates of brain lateralization.
- Highlights the established role of cortical asymmetries and explores the complex relationship with the corpus callosum.
- Offers novel hypotheses regarding brain lateralization and commisural connectivity for future research.