" Parietal region (fields 3, 3a, 2 , I , 40). The parietal region in the present parcellation is approximately coextensive with that of Krieg. " " Parietal cortex, rostral and lateral to the barrel field, is assigned the number 3a. Its relative position is some- what rostral to field 2a in Krieg's map. " " Field 3a is similar in its cell and fiber pattern to 3, though without barrels in layer 1V. The transition from 3a to 40 is marked by a general reduction in cell packing density. The granule cells of layer IV become more widely spaced and globular in a manner similar to layer IV of the cau- dally contiguous temporal region. "
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