[Intrinsic and extrinsic connections of the postarcuate premotor area of the monkey].
Horseradish peroxidase conjugated with wheat germ agglutinine was injected in restricted parts of the postarcuate cortex in the macaque monkey. Anterograde and retrograde transport was found in the parietal and frontal lobes. In the parietal lobe two areas were marked: the antero-lateral part of area 7 and the superior bank of the sylvian fissure. In the frontal lobe the marked areas were the precentral motor cortex, the supplementary motor area and the gyrus cinguli. The intrinsic connections within the postarcuate cortex were rich and widespread. The hand representation was connected anterogradely and retrogradely with the mouth representation and anterogradely with the leg representation; the mouth representation was connected both ways with the hand representation but not with the leg area. The richness of intrinsic connections in the postarcuate cortex supports the suggestion that this area is involved in the organization of sequential motor acts.
D000818:Animals; D001111:Arcuate Nucleus of Hypothalamus / Q000033:anatomy & histology*; D006735:Horseradish Peroxidase; D008251:Macaca / Q000033:anatomy & histology*; D009044:Motor Cortex / Q000033:anatomy & histology*
D006735:Horseradish Peroxidase
Connessioni intrinseche ed estrinseche dell'area premotoria postarcuata di scimmia.