Sleep enhances recognition memory for conspecifics as bound into spatial context

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023752%3A_____%2F17%3A43915378" target="_blank" >RIV/00023752:_____/17:43915378 - isvavai.cz</a>

Result on the web

<a href="http://journal.frontiersin.org/article/10.3389/fnbeh.2017.00028" target="_blank" >http://journal.frontiersin.org/article/10.3389/fnbeh.2017.00028</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fnbeh.2017.00028" target="_blank" >10.3389/fnbeh.2017.00028</a>

Result language

angličtina

Original language name

Sleep enhances recognition memory for conspecifics as bound into spatial context

Original language description

Social memory refers to the fundamental ability of social species to recognize their conspecifics in quite different contexts. Sleep has been shown to benefit consolidation, especially of hippocampus dependent episodic memory whereas effects of sleep on social memory are less well studied. Here, we examined the effect of sleep on memory for conspecifics in rats. To discriminate interactions between the consolidation of social memory and of spatial context during sleep, adult Long Evans rats performed on a social discrimination task in a radial arm maze. The Learning phase comprised three 10-min sampling sessions in which the rats explored a juvenile rat presented at a different arm of the maze in each session. Then rats were allowed to sleep (n = 18) or stayed awake (n = 18) for 120 min. During the following 10-min Test phase, the familiar juvenile rat (of the Learning phase) was presented along with a novel juvenile rat, each rat at an opposite arm of the maze. Significant social recognition memory, as indicated by preferential exploration of the novel over the familiar conspecific, occurred only after post-learning sleep, but not after wakefulness. Sleep, compared with wakefulness, significantly enhanced social recognition during the first minute of the Test phase. However, memory expression depended on the spatial configuration: Significant social recognition memory emerged only after sleep when the rat encountered the novel conspecific at a place different from that of the familiar juvenile in the last sampling session before sleep. Though unspecific retrieval-related effects cannot entirely be excluded, our findings suggest that sleep, rather than independently enhancing social and spatial aspects of memory, consolidates social memory by acting on an episodic representation that binds the memory of the conspecific together with the spatial context in which it was recently encountered.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30103 - Neurosciences (including psychophysiology)

Project

<a href="/en/project/LO1611" target="_blank" >LO1611: Sustainability for The National Institute of Mental Health</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Frontiers in Behavioral Neuroscience

ISSN

1662-5153

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

Article Number: 28

Country of publishing house

SE - SWEDEN

Number of pages

10

Pages from-to

1-10

UT code for WoS article

000394698600001

EID of the result in the Scopus database

2-s2.0-85014002233