Document Type
Article
Publication Date
6-15-2021
Abstract
Poor sleep quality is associated with age-related cognitive decline, and whether reversal of these alterations is possible is unknown. In this study, we report how sleep deprivation (SD) affects hippocampal representations, sleep patterns, and memory in young and old mice. After training in a hippocampus-dependent object-place recognition (OPR) task, control animals sleep ad libitum, although experimental animals undergo 5 h of SD, followed by recovery sleep. Young controls and old SD mice exhibit successful OPR memory, whereas young SD and old control mice are impaired. Successful performance is associated with two cellular phenotypes: (1) "context" cells, which remain stable throughout training and testing, and (2) "object configuration" cells, which remap when objects are introduced to the context and during testing. Additionally, effective memory correlates with spindle counts during non-rapid eye movement (NREM)/rapid eye movement (REM) sigma transitions. These results suggest SD may serve to ameliorate age-related memory deficits and allow hippocampal representations to adapt to changing environments.
Recommended Citation
Yuan, R. K., Lopez, M. R., Ramos-Alvarez, M. M., Normandin, M. E., Thomas, A. S., Uygun, D. S., Cerda, V. R., Grenier, A. E., Wood, M. T., Gagliardi, C. M., Guajardo, H., & Muzzio, I. A. (2021). Differential effect of sleep deprivation on place cell representations, sleep architecture, and memory in young and old mice. Cell reports, 35(11), 109234. https://doi.org/10.1016/j.celrep.2021.109234
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Publication Title
Cell reports
DOI
10.1016/j.celrep.2021.109234
Comments
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).