Hippocampal Efferents to Retrosplenial Cortex and Lateral Septum Are Required for Memory Acquisition

Autor/inn/en	Opalka, Ashley N.; Wang, Dong V.
Titel	Hippocampal Efferents to Retrosplenial Cortex and Lateral Septum Are Required for Memory Acquisition
Quelle	In: Learning & Memory, 27 (2020) 8, S.310-318 (9 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Wang, Dong V.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1072-0502
DOI	10.1101/lm.051797.120
Schlagwörter	Learning Processes; Memory; Brain Hemisphere Functions; Fear; Conditioning; Inhibition; Physiology; Role; Animals; Neurological Impairments + Suchen Sie Ihr Suchwort? Learning process; Lernprozess; Gedächtnis; Furcht; Hemmung; Physiologie; Rollen; Animal; Tier; Tiere; Neurodegenerative Erkrankung
Abstract	Learning and memory involves a large neural network of many brain regions, including the notable hippocampus along with the retrosplenial cortex (RSC) and lateral septum (LS). Previous studies have established that the dorsal hippocampus (dHPC) plays a critical role during the acquisition and retrieval/expression of episodic memories. However, the role of downstream circuitry from the dHPC, including the dHPC-to-RSC and dHPC-to-LS pathways, has come under scrutiny only recently. Here, we used an optogenetic approach with contextual fear conditioning in mice to determine whether the above two pathways are involved in acquisition and expression of contextual fear memory. We found that a selective inhibition of the dHPC neuronal terminals in either the RSC or LS during acquisition impaired subsequent memory performance, suggesting that both the dHPC-to-RSC and dHPC-to-LS pathways play a critical role in memory acquisition. We also selectively inhibited the two dHPC efferent pathways during memory retrieval and found a differential effect on memory performance. These results indicate the intricacies of memory processing and that hippocampal efferents to cortical and subcortical regions may be differentially involved in aspects of physiological and cognitive memory processes. (As Provided).
Anmerkungen	Cold Spring Harbor Laboratory Press. 500 Sunnyside Boulevard, Woodbury, NY 11797-2924. Tel: 800-843-4388; Tel: 516-367-8800; Fax: 516-422-4097; e-mail: cshpres@cshl.edu; Web site: http://learnmem.cshlp.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01