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Parallel but Separate Inputs from Limbic Cortices to the Mammillary Bodies and Anterior Thalamic Nuclei in the Rat by Nicholas F. Wright; Jonathan T. Erichsen; Seralynne D. Vann; Shane M. O'Mara; John P. Aggleton is a scholarly article available to read on EtoBox.

What is Parallel but Separate Inputs from Limbic Cortices to the Mammillary Bodies and Anterior Thalamic Nuclei in the Rat about?

## Abstract The proposal that separate populations of subicular cells provide the direct hippocampal projections to the mammillary bodies and anterior thalamic nuclei was tested by placing two different fluorescent tracers in these two sites. In spite of varying the injection locations within the mammillary bodies and within the three principal anterior thalamic nuclei and the lateral dorsal thalamic nucleus, the overall pattern of results remained consistent. Neurons projecting to the thalamus were localized to the deepest cell populations within the subiculum while neurons projecting to the mammillary bodies consisted of more superficially placed pyramidal cells within the subiculum. Even when these two cell populations become more intermingled, e.g., in parts of the intermediate subiculum, almost no individual cells were found to project to both diencephalic targets. In adjacent limbic areas, i.e., the retrosplenial cortex, postsubiculum, and entorhinal cortex, populations of cells that project to the anterior thalamic nuclei and mammillary bodies were completely segregated. This segregated pattern included afferents to those nuclei comprising the head‐direction system. The sole

Author

Nicholas F. Wright; Jonathan T. Erichsen; Seralynne D. Vann; Shane M. O'Mara; John P. Aggleton

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0021-9967)

Published

2010

Language

EN