An autoradiographic study of the organization of the efferet connections of the hippocampal formation in the rat

@article{Swanson1977AnAS,
  title={An autoradiographic study of the organization of the efferet connections of the hippocampal formation in the rat},
  author={L. W. Swanson and William M. Cowan},
  journal={Journal of Comparative Neurology},
  year={1977},
  volume={172}
}
The efferent connections of the hippocampal formation of the rat have been re‐examined autoradiographically following the injection of small quantities of 3H‐amino acids (usually 3H‐proline) into different parts of Ammon's horn and the adjoining structures. The findings indicate quite clearly that each component of the hippocampal formation has a distinctive pattern of efferent connections and that each component of the fornix system arises from a specific subdivision of the hippocampus or the… 
An autoradiographic study of the organization of intrahippocampal association pathways in the rat
The longer associational connections of the hippocampal formation have been studied autoradiographically in a series of adult rats after small injections of 3H‐amino acids into each of its various
An autoradiographic study of the efferent connections of the entorhinal cortex in the rat.
  • J. M. Wyss
  • Biology
    The Journal of comparative neurology
  • 1981
The longer connections of the entorhinal cortex have been studied autoradiographically in a series of rats, each of which received a small injection of 3H-amino acids in one of the various
Anatomical evidence for direct projections from the entorhinal area to the entire cortical mantle in the rat
  • L. Swanson, C. Kohler
  • Biology, Psychology
    The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1986
TLDR
The results of double retrograde tracer experiments indicated that the 2 densest projections from the lateral entorhinal area--to the medial prefrontal region and to the dentate gyrus and Ammon's horn--arise from essentially separate populations of neurons.
The anatomical organization of septo-hippocampal projections.
TLDR
The connections of both the septum and the hippocampal formation are re-examined using the techniques based on the anterograde transport of isotopically labelled proteins and the retrograde transport of the enzyme marker, horseradish peroxidase.
Distribution of hippocampal CA1 and subicular efferents in the prefrontal cortex of the rat studied by means of anterograde transport of Phaseolus vulgaris‐leucoagglutinin
TLDR
Projections of the hippocampal formation to the prefrontal cortex were visualized in the rat by means of the anterograde tracer Phaseolus vulgaris‐leucoagglutinin and the intermediate portion of the subiculum projects more densely and diffusely than its dorsal and ventral portions.
The commissural connections of the monkey hippocampal formation
TLDR
The commissural connections of the hippocampal formation have been analyzed in the monkey using both anterograde and retrograde labeling techniques and a number of striking differences are observed.
The organization of the fimbria, dorsal fornix and ventral hippocampal commissure in the rat
SummaryThe morphological organization of the two principal efferent pathways of the hippocampal formation — the fimbria and the dorsal fornix — and of the interhippocampal fibers that cross in the
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References

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The septum, or parolfactory area as it used to be called, occupies a pivotal position within the forebrain, being interposed between the hippocampus and amygdala on the one hand, and the hypothalamus
Hippocampo-hypothalamic connections: origin in subicular cortex, not ammon's horn.
TLDR
An autoradiographic study of the subcortical projections of the rat hippocampal formation shows that the efferent fibers of the hippocampus proper do not project to the hypothalamus but are confined to the precommissural fornix, ending primarily in the septum.
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TLDR
Recent studies in the rat have confirmed much earlier descriptions of widespread distributions of the fornix system to the diencephalon and the rostral mid-brain regions.
Retrograde Axonal Transport in the Central Nervous System
TLDR
This retrograde movement of protein from axon terminal to cell body suggests a possible mechanism by which neurons respond to their target areas.
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