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Functional and structural mapping of human cerebral cortex: solutions are in the surfaces
D C Van Essen1, H A Drury, S Joshi
1Department of Anatomy and Neurobiology, Washington University, 660 South Euclid Avenue, St. Louis, MO 63110, USA. vanessen@v1.wustl.edu
Summary
Researchers developed surface-based methods to map brain activity, overcoming the cerebral cortex's complex folds. This approach enhances the analysis of functional specialization and individual differences in primate brains.
Area of Science:
- Neuroscience
- Neuroimaging
- Computational Anatomy
Background:
- The human cerebral cortex's intricate folds and individual variability pose challenges for studying functional specialization.
- Conventional stereotaxic atlases struggle to accurately represent complex cortical geography.
Purpose of the Study:
- To present surface-based strategies for reconstructing and visualizing the cerebral cortex.
- To create a surface-based atlas for improved analysis of experimental data and functional organization.
Main Methods:
- Explicit reconstruction of cortical surfaces.
- Surface-based visualization in multiple formats (3D, 2D slices, flat maps).
- Surface-based warping for data registration and inter-species comparison.
Main Results:
- A novel surface-based atlas was generated for the Visible Man cortex.
- Demonstrated improved visualization of functional and topographical organization in the human visual cortex.
- Successfully warped macaque cortical data to a human cortical map, facilitating cross-species comparisons.
Conclusions:
- Surface-based approaches offer significant advantages over traditional methods for analyzing cortical function.
- These methods enable more refined studies of both commonalities and individual variations in primate cerebral cortex organization.
- Facilitates comparative neuroanatomy and enhances understanding of brain functional specialization across species.