Macaque monkey retrosplenial cortex: III. Cortical efferents.

Macaque monkey retrosplenial cortex: III. Cortical efferents. Research Abstract Details 

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Macaque monkey retrosplenial cortex: III. Cortical efferents. Abstract Text:

Yasushi Kobayashi,David G Amaral,

We have investigated the cortical efferent projections of the macaque monkey retrosplenial and posterior cingulate cortices by using (3)H-amino acids as anterograde tracers. All the injections produced extensive local connections to other portions of this region. There were also a number of extrinsic efferent cortical connections, many of which have not hitherto been reported. Major projections from the retrosplenial cortex were directed to the frontal lobe, with heaviest terminations in areas 46, 9, 10, and 11. There were also very substantial projections to the entorhinal cortex, presubiculum, and parasubiculum of the hippocampal formation, as well as to areas TH and TF of the parahippocampal cortex. Some injections led to labeling of area V4, the dorsal bank of the superior temporal sulcus, and area 7a of the parietal cortex. Projections from the posterior cingulate cortex innervated all these same regions, although the density of termination was different from the retrosplenial projections. The posterior cingulate cortex gave rise to additional projections to parietal area DP and to the cortex along the convexity of the superior temporal gyrus. The ventral portion of the posterior cingulate cortex (area 23v) gave rise to much denser efferent projections to the hippocampal formation than the dorsal portions (areas 23e and i). These connections are discussed in relation to the clinical syndromes of retrosplenial amnesia and topographic disorientation in humans commonly caused by lesions in the caudoventral portions of the retrosplenial and posterior cingulate cortices.

Macaque monkey retrosplenial cortex: III. Cortical efferents. Publishing Authors By Initials

Y Kobayashi,DG Amaral,

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Macaque monkey retrosplenial cortex: III. Cortical efferents. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: The Journal of comparative neurology

VOLUME: 502

Page Numbers: 810-33

Journal Abbreviation:

ISSN: 0021-9967

DAY: 10

MONTH: Jun

YEAR: 2007

Macaque monkey retrosplenial cortex: III. Cortical efferents. Information

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LANGUAGE: eng

NlmUniqueID: 406041

Macaque monkey retrosplenial cortex: III. Cortical efferents. Keywords Mesh Terms:

KEYWORDS: Tritium

MESH TERMS: metabolism

Chemical & Substance for Abstract: Macaque monkey retrosplenial cortex: III. Cortical efferents. Information

Substance Name: Tritium

Registry Number: 10028-17-8

Grant and Affiliation Information for Macaque monkey retrosplenial cortex: III. Cortical efferents.

AFFILIATION: Department of Anatomy and Neurobiology, National Defense Medical College, Tokorozawa, Saitama 359-8513, Japan.

Country: United States

AGENCY: United States NCRR

GRANT: RR 00169

ACRONYM: RR

MEDLINETA: J Comp Neurol

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