Chris Wiggins1, Andreas Schaefer2,
Bibek Dhital2, Denis Le Bihan1, Robert Turner2
1CEA NeuroSpin, Gif-sur-Yvette, France;
2Max Planck Institute for Human Cognitive and Brain Sciences,
Leipzig, Germany
At
7 T, high resolution structural imaging shows fine details of brain
structures in vivo. Examining such images of the adult human corpus callosum,
we have discovered two-dimensional planar structures never previously
described with traditional histological techniques. Analysis of good quality
DTI data at 3T supports this observation, showing a second preferred
direction of water diffusion. Interhemispheric axonal connections show
detailed laminar ordering at submillimeter scale.