[The structure of internal intraneuronal connections in the area 17 of the cat cerebral cortex].
Spatial distribution of horizontal intrinsic neuronal connections in area 17 of cat cerebral cortex was studied following HRP microion tophoretic injections into the single cortical columns. Cluster analysis of labelled cell distribution in superficial layers was performed in the tangential cortical plane. Area 17 was found to contain 7 +/- 1 clusters each consisting of 1-5 cells. Clusters were arranged in two rows, separated by a distance of 1.2 +/- 0.3 mm. The distance between the centers of the clusters that form the rows was equal to 0.8 +/- 0.3 mm. The spatial characteristics of cell clusters sending axons to cortical column, found in this study, were compared with the known data on the optical imaging of the activity of neurons of orientation and ocular dominance columns of visual cortex. It is suggested that area 17 cortical column receives inputs from cells of 6-8 hypercolumns that have similar ocular dominance and orientation preference.
Alekseenko
S V
SV
Laboratory of Physiology of Vision and Sector of Morphology of Interneuronal Connections, RAS I.P. Pavlov Institute of Physiology, St. Petersburg.
Toporova
S N
SN
Makarov
F N
FN
Liakhovetskiĭ
V A
VA
D000818:Animals; D001921:Brain / Q000033:anatomy & histology / Q000166:cytology*; D002415:Cats