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An Autoradiographic Study of the Organization of Intrahippocampal Association Pathways in the Rat by L. W. Swanson; J. M. Wyss; W. M. Cowan is a Neuroscience article available to read on EtoBox.

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## Abstract The longer associational connections of the hippocampal formation have been studied autoradiographically in a series of adult rats after small injections of ^3^H‐amino acids into each of its various cytoarchitectonic fields. The major findings can be summarized as follows. The dentate gyrus projects in a topographically ordered manner upon the pyramidal cells of the __regio inferior__ by way of the supra‐ and infrapyramidal bundles of mossy fibers. Certain cells in the hilar region of the dentate gyrus (which operationally may be defined as constituting field CA~4~ of Ammon's horn) give rise to a hippocampodentate projection to the inner one‐quarter of the molecular layer of the dentate gyrus. Either the same or closely related cells give rise to fibers which join the Schaffer collateral system from field CA~3~ to the __stratum radiatum__ and __stratum oriens__ of the __regio superior__. The __regio inferior__ is also characterized by a longitudinally directed associational bundle which runs throughout the septo‐temporal extent of the hippocampus and is centered in the region of subfield CA~3a~. The __regio superior__ has no reciprocal projection to the __regio inferior

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Author

L. W. Swanson; J. M. Wyss; W. M. Cowan

Publisher

Wiley

Published

1978

Language

EN

Field

Neuroscience (Life Sciences)