The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
How much sleep do we need?
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Impact of sleep debt on metabolic and endocrine function
Spiegel, K., Leproult, R., & Van Cauter, E. (1999) · The Lancet · doi:10.1016/s0140-6736(99)01376-8 · Cited by 3,668
Effects of Sleep Deprivation on Performance: A Meta-Analysis
Pilcher, J. J., & Huffcutt, A. I. (1996) · Sleep · doi:10.1093/sleep/19.4.318 · Cited by 1,549
Short and Long Sleep and Sleeping Pills: Is Increased Mortality Associated?
Kripke, D. F. (1979) · Archives of General Psychiatry · doi:10.1001/archpsyc.1979.01780010109014 · Cited by 660
Partial night sleep deprivation reduces natural killer and celhdar immune responses in humans
Irwin, M., McClintick, J., Costlow, C., Fortner, M., White, J., & Gillin, J. C. (1996) · The FASEB Journal · doi:10.1096/fasebj.10.5.8621064 · Cited by 480
Some preliminary findings on physical complaints from a prospective study of 1,064,004 men and women
Hammond, E. C. (1964) · American Journal of Public Health and the Nations Health · doi:10.2105/ajph.54.1.11 · Cited by 401
Mortality Risk Associated with Sleeping Patterns Among Adults
Wingard, D. L., & Berkman, L. F. (1983) · Sleep · doi:10.1093/sleep/6.2.102 · Cited by 371
Landolt, H.-P., Dijk, D.-J., Achermann, P., & Borbély, A. A. (1996) · Brain Research · doi:10.1016/s0006-8993(96)00770-6 · Cited by 350
Conservation of photoperiod-responsive mechanisms in humans
Wehr, T. A., Moul, D. E., Barbato, G., Giesen, H. A., Seidel, J. A., Barker, C., & Bender, C. (1993) · American Journal of Physiology-Regulatory, Integrative and Comparative Physiology · doi:10.1152/ajpregu.1993.265.4.r846 · Cited by 334
Partial sleep deprivation reduces natural killer cell activity in humans.
Irwin, M., Mascovich, A., Gillin, J. C., Willoughby, R., Pike, J., & Smith, T. L. (1994) · Psychosomatic Medicine · doi:10.1097/00006842-199411000-00004 · Cited by 249
Jean-Louis, G., Kripke, D. F., Ancoli-Israel, S., Klauber, M. R., & Sepulveda, R. S. (2000) · Biological Psychiatry · doi:10.1016/s0006-3223(99)00169-9 · Cited by 202
Cited by
Patel, N. P., Grandner, M. A., Xie, D., Branas, C. C., & Gooneratne, N. (2010) · BMC Public Health · doi:10.1186/1471-2458-10-475 · Cited by 451
Examining the effects of sleep deprivation on workplace deviance: A self-regulatory perspective
Christian, M. S., & Ellis, A. P. J. (2011) · Academy of Management Journal · doi:10.5465/amj.2010.0179 · Cited by 433
A multimodal approach to estimating vigilance using EEG and forehead EOG
Zheng, W.-L., & Lu, B.-L. (2017) · Journal of Neural Engineering · doi:10.1088/1741-2552/aa5a98 · Cited by 424
“Most experiments were performed in the early afternoon (approximately 13:30) after lunch to induce fatigue easily when the circadian rhythm of sleepiness reached its peak (Ferrara & De Gennaro 2001).”
BackgroundDoes Elite Sport Degrade Sleep Quality? A Systematic Review
Gupta, L., Morgan, K., & Gilchrist, S. (2017) · Sports Medicine · doi:10.1007/s40279-016-0650-6 · Cited by 410
The Cost of Poor Sleep: Workplace Productivity Loss and Associated Costs
Rosekind, M. R., Gregory, K. B., Mallis, M. M., Brandt, S. L., Seal, B., & Lerner, D. (2010) · Journal of Occupational & Environmental Medicine · doi:10.1097/jom.0b013e3181c78c30 · Cited by 385
Metadata
- Authors
- Ferrara, M., & De Gennaro, L.
- Venue
- Sleep Medicine Reviews
- Publisher
- Elsevier BV
- Published
- 2001-04
- Volume
- 5
- Issue
- 2
- Pages
- 155-179
- ISSN
- 1087-0792 (ISSN-L)
- OpenAlex
- W2069657860
- Cited by
- 335
- References
- 11
- FWCI
- 5.38
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: How much sleep do we need? https://app.cochat.ai/papers/10.1053/smrv.2000.0138
- The paper
- Ferrara, M., & De Gennaro, L. (2001). How much sleep do we need? Sleep Medicine Reviews. https://doi.org/10.1053/smrv.2000.0138
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.