A quantitative approach to cytoarchiterctonics. II. The allocortex of Tupaia belangeri.

Fourteen allocortical areas of Tupaia belangeri are described after measuring the grey level index (Zilles et al., 1978b) with a new, automatic, high resolution measuring procedure. The laminar pattern of the cortical areas is quantitatively described after vertical changes in this index occurred from the pial surface to the white matter. The registered profiles show characteristic features for the different allocortical brain regions. The results are compared with lamination systems gained by comparative cytoarchitectonic studies using purely qualitative criteria.