Crossed pathways from the entorhinal area to the fascia dentata. I. Normal in rabbits.

摘要: The entorhinal area projects to the Ammon's horn and fascia dentata by way of medial lateral perforant paths that originate in part area, respectively. two tracts terminate at different laminar levels molecular layers ipsilateral hippocampal regio inferior dentata. Using Fink-Heimer technique, each normal rabbit is now shown innervate antero-dorsal extremes both hemispheres. crossed uncrossed components path homotopic zones on side. This bilateral innervation contrasts with situation rat where only very weak exist. Degeneration particles contralateral a lesion diminish number along course fibers as they proceed away from midline, but are traceable for several millimeters. Crossed pass one hemisphere into other directly through fused fasciae dentatae. The indicates even though axons highly specific respect class neuron dendritic segments upon which form synapses, apparently do not possess mechanism can distinguish between receptive fields It concluded during ontogeny sides most likely compete available synaptic sites rostral their terminal relative amounts hemispheres governed spatial temporal factors.