Retrosplenial Cortex Is Required for the Retrieval of Remote Memory for Auditory Cues

Autor/inn/en	Todd, Travis P.; Mehlman, Max L.; Keene, Christopher S.; DeAngeli, Nicole E.; Bucci, David J.
Titel	Retrosplenial Cortex Is Required for the Retrieval of Remote Memory for Auditory Cues
Quelle	In: Learning & Memory, 23 (2016) 6, S.278-288 (11 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1072-0502
DOI	10.1101/lm.041822.116
Schlagwörter	Brain Hemisphere Functions; Memory; Cues; Recall (Psychology); Spatial Ability; Fear; Experiments; Neurological Impairments; Auditory Stimuli + Suchen Sie Ihr Suchwort? Gedächtnis; Stichwort; Abberufung; Räumliches Vorstellungsvermögen; Furcht; Erprobung; Neurodegenerative Erkrankung; Auditive Stimulation
Abstract	The retrosplenial cortex (RSC) has a well-established role in contextual and spatial learning and memory, consistent with its known connectivity with visuo-spatial association areas. In contrast, RSC appears to have little involvement with delay fear conditioning to an auditory cue. However, all previous studies have examined the contribution of the RSC to recently acquired auditory fear memories. Since neocortical regions have been implicated in the permanent storage of remote memories, we examined the contribution of the RSC to remotely acquired auditory fear memories. In Experiment 1, retrieval of a remotely acquired auditory fear memory was impaired when permanent lesions (either electrolytic or neurotoxic) were made several weeks after initial conditioning. In Experiment 2, using a chemogenetic approach, we observed impairments in the retrieval of remote memory for an auditory cue when the RSC was temporarily inactivated during testing. In Experiment 3, after injection of a retrograde tracer into the RSC, we observed labeled cells in primary and secondary auditory cortices, as well as the claustrum, indicating that the RSC receives direct projections from auditory regions. Overall our results indicate the RSC has a critical role in the retrieval of remotely acquired auditory fear memories, and we suggest this is related to the quality of the memory, with less precise memories being RSC dependent. (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	2020/1/01