Christoph Wolfram Ulrich Leuze1, Bibek Dhital1, Alfred Anwander1, Andre Pampel1, Robin Heidemann1, Stefan Geyer1, Marcel Gratz2, Robert Turner1
1Max Planck Institute for
Human Cognitive & Brain Sciences,
Diffusion-weighted imaging (DWI) at high spatial and angular resolution was performed at 9.4T on a block of fixed human cadaver brain tissue containing visual cortex. Analysis of the principal eigenvector orientations allowed visualization of several layers within the primary visual cortex V1. No clearly preferred diffusion direction could be measured inside the stria of Gennari (SoG), consistent with its high content of transverse myelinated intracortical axons. In surrounding layers the orientational structure was predominantly radial. The low orientational anisotropy of the SoG terminates at the V1/V2 boundary, allowing easy visualization of this boundary using diffusion data alone.