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Year: 2008 Volume: 507 Issue: 4

Year: 2008 Volume: 507 Issue: 3

Year: 2008 Volume: 507 Issue: 2

Year: 2008 Volume: 507 Issue: 1

Year: 2008 Volume: 506

Thalamic projections to the posteromedial cortex in the macaque.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Buckwalter, Joseph A. Parvizi, Josef Morecraft, Robert J. Van Hoesen, Gary W.
Description	Country affiliation: United States Author Affiliation: Buckwalter JA ( Department of Anatomy and Cell Biology, University of Iowa, Iowa City, Iowa 52242, USA. jbuckwalter@ucsd.edu)
Abstract	The medial parietal, posterior cingulate, and retrosplenial cortices collectively constitute a region of cortex referred to as the posteromedial cortices (PMC). In an effort to shed light on the neuroanatomical organization of the PMC, we undertook a study to identify and analyze the thalamocortical connections of these cortices. Retrograde tracer injections were placed in the posterior cingulate (PCC), retrosplenial (RSC), medial parietal cortices (MPC), and posterior cingulate sulcus (PCS), and the labeling patterns within the thalamus were analyzed. Three afferent projection patterns were observed to the PMC from the thalamus: a PCC/RSC pattern that involved the anterior thalamic nuclei, an MPC pattern that involved the lateral posterior and pulvinar nuclei, and a PCS pattern that involved the ventral thalamic nuclei. Additionally, a shared pattern of projections from the anterior intralaminar nuclei (AILN) and posterior thalamic nuclei (PTN) to all cortical regions of the PMC was observed. Our findings suggest that distinct regions within the PMC are supplied by distinctive patterns of thalamic input, but also share common projections from intralaminar and posterior thalamic sources. In addition, we relate our findings to functional abnormalities in aging and dementia, and address a domain-like pattern of thalamocortical labeling of the PMC that is drawn selectively and collectively from multiple thalamic nuclei.
File Format	HTM / HTML
ISSN	00219967
e-ISSN	10969861
DOI	10.1002/cne.21647
Journal	Journal of Comparative Neurology
Issue Number	5
Volume Number	507
Language	English
Publisher	Wiley
Publisher Date	2008-04-10
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Neurology Afferent Pathways Anatomy & Histology Cerebral Cortex Thalamus Animals Macaca Microscopy, Fluorescence Research Support, N.i.h., Extramural
Content Type	Text
Resource Type	Article
Subject	Neuroscience

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