[Associative connections of the parietal cortex in cats].

Cortico-cortical connections of sensory (visual, auditory and somatosensory) areas of cortex with parietal associative cortex were investigated in cat by means of retrograde axonal transport of horse-radish peroxidase and Fink-Haimer technique. The shape, size and localization of cells which make monosynaptic connections between the primary sensory areas and parietal cortex and the distribution of fiber terminals of such cells in the associative parietal cortex were determined. Maximum number of cells connected with field 7 of the parietal associative cortex was found in field V1 of the visual cortex, and with field 5 in field S1 of the somatosensory cortex. Besides HRP-positive pyramidal neurons, mainly localized in layers II-IV, labelled stellate and spindle-shaped cells were found in a small amount. The connections of parietal associative cortex are discussed on the basis of the data obtained.