Afferent connections of fields 17 and 18 of the cat cerebral cortex formed by neurons of the dorsal lateral geniculate body.
Horseradish peroxidase (HRP) was applied microiontophoretically to nine individual columns in fields 17 and six columns in field 18 of the cat cerebral cortex. Most labeled cells in the dorsal lateral geniculate body were identified in layer A. The ratio of number of labeled cells in layer A to the number of labeled cells in layer A1 was assessed (the A/A1 ratio). Application of HRP to columns in field 17 yielded A/A1 ratios of 0.5 to 2.5; application to field 18 gave ratios ranging from 0.2 to 0.9. This suggests that the fields studied here contained columns which were afferent in relation to the ipsilateral eye and the contralateral eye.
Division of Interneuron Connection Morphology and Visual, Physiology Laboratory, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg.
S N
SN
Toporova
S V
SV
Alekseenko
F N
FN
Makarov
D000818:Animals; D002415:Cats; D002540:Cerebral Cortex / Q000033:anatomy & histology* / Q000166:cytology; D005260:Female; D005829:Geniculate Bodies / Q000033:anatomy & histology* / Q000166:cytology; D006651:Histocytochemistry; D006735:Horseradish Peroxidase; D007478:Iontophoresis; D008297:Male; D009475:Neurons, Afferent / Q000166:cytology*; D014795:Visual Pathways / Q000033:anatomy & histology* / Q000166:cytology
D006735:Horseradish Peroxidase