Sleep Deprivation and Memory: Meta-Analytic Reviews of Studies on Sleep Deprivation Before and After Learning.
Research suggests that sleep deprivation both before and after encoding has a detrimental effect on memory for newly learned material. However, there is as yet no quantitative analyses of the size of these effects. We conducted two meta-analyses of studies published between 1970 and 2020 that invest...
| Published in: | Psychological Bulletin Vol. 147; no. 11; pp. 1215 - 1241 |
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| Main Authors: | , , , |
| Format: | Article |
| Published: |
American Psychological Association
Nov2021
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=161849088&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 161849088 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00332909 PSB jtl: Psychological Bulletin issn: 00332909 maglogo: N pubinfo: dt: Nov2021 vid: 147 iid: 11 pid: 34 pub: American Psychological Association artinfo: ui: 161849088 10.1037/bul0000348 ppf: 1215 ppct: 26 formats: tig: atl: Sleep Deprivation and Memory: Meta-Analytic Reviews of Studies on Sleep Deprivation Before and After Learning. aug: au: Newbury, Chloe R. Crowley, Rebecca Rastle, Kathleen Tamminen, Jakke affil: Department of Psychology, Royal Holloway, University of London su: Memory Learning Sleep deprivation Long-term memory Statistical power analysis Explicit memory Sleep hygiene sug: subj: Memory Learning Sleep deprivation Long-term memory Statistical power analysis Explicit memory Sleep hygiene keyword: learning memory meta-analysis sleep sleep deprivation learning memory meta-analysis sleep sleep deprivation ab: Research suggests that sleep deprivation both before and after encoding has a detrimental effect on memory for newly learned material. However, there is as yet no quantitative analyses of the size of these effects. We conducted two meta-analyses of studies published between 1970 and 2020 that investigated effects of total, acute sleep deprivation on memory (i.e., at least one full night of sleep deprivation): one for deprivation occurring before learning and one for deprivation occurring after learning. The impact of sleep deprivation after learning on memory was associated with Hedges' g = 0.277, 95% CI [0.177, 0.377]. Whether testing took place immediately after deprivation or after recovery sleep moderated the effect, with significantly larger effects observed in immediate tests. Procedural memory tasks also showed significantly larger effects than declarative memory tasks. The impact of sleep deprivation before learning was associated with Hedges' g = 0.621, 95% CI [0.473, 0.769]. Egger's tests for funnel plot asymmetry suggested significant publication bias in both meta-analyses. Statistical power was very low in most of the analyzed studies. Highly powered, preregistered replications are needed to estimate the underlying effect sizes more precisely. Public Significance Statement: The health risks associated with lack of sleep are well known, but the consequences of missing one or more nights of sleep for learning and memory are less well appreciated. In two meta-analyses pooling studies across 5 decades of research, we found that total sleep deprivation before learning as well as after learning had a detrimental impact on memory for the newly learned materials. These data suggest sleep supports learning and memory in two ways: It prepares the brain for learning over the next day, and it helps strengthen new memories learned during the previous day. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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