[The spatial distribution of the horizontal connections in area 18 of the cat cerebral cortex].

Spatial distribution of horizontal inner links in field 18 of cat cerebral cortex was studied after microiontophoretic administration of HRP into a certain cortical column. HRP labelled cell location and their distribution in plane of cortex surface and sagittal and frontal planes were detected. Ellipsoid shape and rostrocaudal direction of the area of labelled cells was demonstrated irrelevant to the column localization in field 18 (stereotaxic coordinates of the columns studied are from P4 to A14). Thus, topography of the field 18 inner links was coordinated with its macrotopography, detect established electrophysiologically.