Multilevel Human Brain Atlas

The multilevel human brain builds on the Julich-Brain cytoarchitectonic maps as a unifying principle of organisation, which are defined at the microscopic scale and well established as a reference for anatomical assignment of neuroimaging signals. The maps reflect intersubject variability in space and localization (“probability maps”). They are complemented with maps that cover complementary aspects of brain organisation, currently represented by fiber bundles from MRI tractography and maps of functional modes (DiFuMo). The atlas supports the MNI Colin27 and ICBM 2009c nonlinear asymmetric spaces to reflect the macroanatomical scale, which are common in functional imaging and whole-brain connectivity studies. It combines those with the microscopic resolution BigBrain model to represent brain organisation at the cellular level. Different brain regions are characterised by multiple levels of brain connectivity and a growing selection of multimodal data features, including transmitter receptor densities, cell distributions, and physiological recordings.