• Neuroscience · Jun 2019

    The claustrum is a target for projections from the supramammillary nucleus in the rat.

    • Marie Barbier and Pierre-Yves Risold.
    • EA481, Neurosciences Intégratives et Cliniques, UFR Santé, 19 rue Ambroise Paré, Université de Bourgogne Franche-Comté, 25030 Besançon cedex, France. Electronic address: marie.barbier03@edu.univ-fcomte.fr.
    • Neuroscience. 2019 Jun 15; 409: 261-275.

    AbstractInjection of the anterograde tracer Phaseolus vulgaris leucoagglutinin (PHAL) into the rat rostral and caudal supramammillary nucleus (SUM) provided expected patterns of projections into the hippocampus and the septal region. In addition, unexpectedly intense projections were observed into the claustrum defined by parvalbumin expression. Injections of the retrograde tracer fluorogold (FG) into the hippocampus and the region of the claustrum showed that the cells of origin of these projections distributed similarly within the borders of the SUM. The SUM is usually involved in control of hippocampal theta activity, but the observation of intense projections into the claustrum indicates that it may also influence isocortical processes. Therefore, the SUM may coordinate sensory processing in the isocortex with memory formation in the hippocampus.Copyright © 2019 IBRO. Published by Elsevier Ltd. All rights reserved.

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