two laminae of white fibers that course parallel to the surface of the cerebral cortex and are visible as the stria of the internal pyramidal layer [TA] in cortical layer V (outer line) and the stria of the internal granular layer [TA] in cortical layer IV (inner line) that appear in myelin-stained sections cut perpendicularly to the surface; the line of Gennari in the calcarine cortex represents the outer of these lines. SYN: stria laminae granularis internae [TA], stria laminae pyramidalis internae [TA], Baillarger bands.