Cited by 509Sleep and Work-Related FatigueSleep and Wakefulness ResearchNeural and Behavioral Psychology Studies

The DOI matches its Crossref record; 57 of the 57 references it cites were found in a registry or an index; none of the 66 sources its claims cite is checked for support yet.

Functional Imaging of Working Memory after 24 Hr of Total Sleep Deprivation

Open access
Chee, Michael W. L., Choo, Wei Chieh·2004·The Journal of Neuroscience

Abstract

The neurobehavioral effects of 24 hr of total sleep deprivation (SD) on working memory in young healthy adults was studied using functional magnetic resonance imaging. Two tasks, one testing maintenance and the other manipulation and maintenance, were used. After SD, response times for both tasks were significantly slower. Performance was better preserved in the more complex task. Both tasks activated a bilateral, left hemisphere-dominant frontal-parietal network of brain regions reflecting the engagement of verbal working memory. In both states, manipulation elicited more extensive and bilateral (L>R) frontal, parietal, and thalamic activation. After SD, there was reduced blood oxygenation level-dependent signal response in the medial parietal region with both tasks. Reduced deactivation of the anterior medial frontal and posterior cingulate regions was observed with both tasks. Finally, there was disproportionately greater activation of the left dorsolateral prefrontal cortex and bilateral thalamus when manipulation was required. This pattern of changes in activation and deactivation bears similarity to that observed when healthy elderly adults perform similar tasks. Our data suggest that reduced activation and reduced deactivation could underlie cognitive impairment after SD and that increased prefrontal and thalamic activation may represent compensatory adaptations. The additional left frontal activation elicited after SD is postulated to be task dependent and contingent on task complexity. Our findings provide neural correlates to explain why task performance in relatively more complex tasks is better preserved relative to simpler ones after SD.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

After 24 hr of total sleep deprivation, healthy young adults showed slower working-memory response times and reduced medial parietal activation, alongside reduced deactivation in anterior medial frontal and posterior cingulate regions. More complex manipulation recruited disproportionately greater left dorsolateral prefrontal and bilateral thalamic activation after sleep deprivation, which the authors interpret as possible compensation.

Key findings

  • Sleep deprivation increased subjective sleepiness (ESS, 4.1 ± 4.1 to 17.1 ± 4.0; p < 0.001) and slowed response times for both maintenance (LTR: 825 ± 80 to 883 ± 110 msec; p < 0.05) and manipulation-plus-maintenance (PLUS: 786 ± 119 to 860 ± 144 msec; p < 0.05).
  • Accuracy declined after sleep deprivation for LTR (0.959 ± 0.049 to 0.902 ± 0.097; p < 0.05) but not for PLUS (0.957 ± 0.055 to 0.926 ± 0.086), and omitted responses increased for LTR (0.2 ± 0.5% to 4.0 ± 6.3%; p < 0.05) but not PLUS.
  • Both tasks activated a bilateral, left-hemisphere-dominant frontal-parietal network; manipulation elicited more extensive bilateral frontal, parietal, and thalamic activation than maintenance in both states.
  • After sleep deprivation, both tasks showed reduced BOLD signal in medial parietal/precuneus regions and reduced deactivation in anterior medial frontal and posterior cingulate regions; manipulation after sleep deprivation produced disproportionately greater left dorsolateral prefrontal and bilateral thalamic activation.

Methods

  • Fourteen right-handed healthy undergraduate volunteers (five women; mean age 23 years; range 19–24) were scanned twice, once during rested wakefulness and once after 24 hr of total sleep deprivation, with sessions 1 week apart and order counterbalanced.
  • Two verbal working-memory tasks were used: LTR tested maintenance, and PLUS tested manipulation plus maintenance; each had a matched perceptual-motor control condition.
  • fMRI data were acquired on a 3T scanner and analyzed with a general linear model, random-effects whole-brain voxel-by-voxel contrasts, and region-of-interest analyses; whole-brain contrasts used p < 0.005 uncorrected with a nine-contiguous-voxel cluster threshold. One subject’s in-scanner data were lost because of a technical error.

Limitations

  • The paper does not include a formal limitations section; it states that short-term total sleep deprivation is artificial and that the experiments were relatively short because the benefit of task complexity is often temporary.
  • Evident from the text: the sample was small (14 participants, with one subject’s in-scanner data lost), limited to young healthy right-handed undergraduates, and the sleep-deprivation manipulation was acute rather than chronic.
  • Evident from the text: some whole-brain state-by-task interaction findings were reported at a less stringent threshold of p < 0.005 uncorrected, although the left dorsolateral prefrontal interaction was confirmed with ROI analysis (F(1,12) = 17.4; p < 0.001).

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1523/jneurosci.0007-04.2004

Cites

57 of 57 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

42 Own result · 37 Not checked yet · 17 Own interpretation · 3 Own method · 2 No basis given

Verify all 66 references — free account

Show all 71 claims

  • It may state two separate claims as one. 16
  • Probably not a substantial claim. 18
30 of 30
  • The paper relies on this without support.

    BOLD signal changes reflect neural activity.

    “The time course of the blood oxygenation leveldependent (BOLD) response in each activated or deactivated region was inspected manually to verify the classification of activity change.”
  • The paper relies on this without support.

    The sample of 14 healthy young adults is representative of the broader population of healthy young adults.

    “Fourteen right-handed, healthy undergraduate volunteers (five women; mean age, 23 years; range, 19 -24) participated in the study after giving informed consent.”
  • The paper relies on this without support.

    BOLD signal is comparable across subjects and scanning sessions after normalization.

    “Mean intensity normalization was performed to obtain the same average intensity for each slice across scans.”
3 of 3

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Citations

Cites

Show all 57 references

Research works printed but not linked: 3

  1. 1999, Sleep Res Online, 2, 65
  2. Craik FIM (1986) A functional account of age differences in memory. In: Human memory and cognitive capabilities, mechanisms and performances (Klix F, Hagendorf H, eds), pp 409-422: Amsterdam: Elsevier.
  3. 2000, Sleep, 23, 1067

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Metadata

Authors
Chee, M. W. L., & Choo, W. C.
Affiliations
SingHealth (SG)
Venue
The Journal of Neuroscience
Published
2004-05-12
Volume
24
Issue
19
Pages
4560-4567
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2110930020
Cited by
509
References
57
Citations by year
2026: 7 · 2025: 12 · 2024: 14 · 2023: 20 · 2022: 21 · 2021: 27 · 2020: 19 · 2019: 39 · 2018: 24 · 2017: 30 · 2016: 19 · 2015: 26 · 2014: 21 · 2013: 33 · 2012: 28
FWCI
25.52
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Medical Research Council
  • National Medical Research Council
  • Biomedical Research Council
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
total sleep deprivation, working memory, verbal working memory, frontoparietal network, dorsolateral prefrontal cortex, thalamus, task complexity, cognitive impairment, healthy young adults
MeSH terms
Adult, Brain, Brain Mapping, Female, Humans, Magnetic Resonance Imaging, Male, Memory, Short-Term, Parietal Lobe, Reaction Time, Sleep Deprivation, Sleep Stages, Task Performance and Analysis, Thalamus, Wakefulness, Prefrontal Cortex

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