Reciprocal and Topographic Connections Between the Piriform and Prefrontal Cortices in the Rat: A Tracing Study Using the B Subunit of the Cholera Toxin

In the present study, the reciprocal connections between the piriform cortex and the prefrontal areas are described on the basis of experiments using the anterograde and the retrograde transport of the cholera toxin B subunit (CTb). Following CTb injections placed in the anterior part of the pirifor...

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Veröffentlicht in:Brain research bulletin 1996, Vol.41 (6), p.391-398
Hauptverfasser: DATICHE, FRÉDÉRIQUE, CATTARELLI, MARTINE
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description In the present study, the reciprocal connections between the piriform cortex and the prefrontal areas are described on the basis of experiments using the anterograde and the retrograde transport of the cholera toxin B subunit (CTb). Following CTb injections placed in the anterior part of the piriform cortex, retrogradely labeled cells and anterogradely labeled fibers were mainly found in the ventrolateral and lateral orbital areas as well as in the anterior part of the agranular insular cortex. Following injections placed in the posterior part of the piriform cortex, the CTb labeling was primarily observed in the infralimbic area and the posterior part of the agranular insular cortex. Thus, we described a topographical organization of the direct reciprocal connections between the anterior and the posterior parts of the piriform cortex parts and some prefrontal areas. This could support a differential modulation of the olfactory processing along the rostrocaudal dimension of the piriform cortex. Copyright © 1996 Elsevier Science Inc.
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subjects Agranular insular cortex
Anatomy
Animals
Anterograde transport
B subunit of the cholera toxin
Biological and medical sciences
Central nervous system
Cholera Toxin - pharmacology
cortex
Fundamental and applied biological sciences. Psychology
Infralimbic
Male
Neural Pathways - anatomy & histology
Olfactory cortex
Olfactory Pathways - anatomy & histology
Orbital cortex
Prefrontal Cortex - anatomy & histology
Rats
Rats, Wistar
Retrograde
transport
Vertebrates: nervous system and sense organs
title Reciprocal and Topographic Connections Between the Piriform and Prefrontal Cortices in the Rat: A Tracing Study Using the B Subunit of the Cholera Toxin
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