[Projections of fields 5 and 7 in the subdivision of the sensorimotor area of the cat cerebral cortex].

Projections of the parietal cortex (area 5 and 7) to the subdivisions of the sensorimotor cortex have been studied with axonal degeneration method. It was shown that density of distribution of the association fibres is different in the areas of the parietal and sensorimotor cortex. Area 5 projects mainly to the posterolateral part of the cruciate sulcus (areas 4fu, 4 delta); its projections to areas 4y, 4sfu and 6iffu, 6aa, 6ab are less pronounced. Area 7 is connected mostly with the medial part of the lower lip of the cruciate sulcus (areas 6iffu, 6aa, 6ab) and its projection to areas 4fu and 4 delta is less pronounced. Poor interrelation between area 5 and areas SI (2, 3a, 3b) and no projection to SII (second somatosensory area of Wolsey) were observed. No projections were found from area 7 to areas SI and SII.