Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 361

The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Subjective sleepiness, simulated driving performance and blink duration: examining individual differences

INGRE, MICHAEL, ÅKERSTEDT, TORBJÖRN, PETERS, BJÖRN, ANUND, ANNA, KECKLUND, GÖRAN·2006·Journal of Sleep Research

Abstract

Summary: The present study aimed to provide subject‐specific estimates of the relation between subjective sleepiness measured with the Karolinska Sleepiness Scale (KSS) and blink duration (BLINKD) and lane drifting calculated as the standard deviation of the lateral position (SDLAT) in a high‐fidelity moving base driving simulator. Five male and five female shift workers were recruited to participate in a 2‐h drive (08:00–10:00 hours) after a normal night sleep and after working a night shift. Subjective sleepiness was rated on the KSS in 5‐min intervals during the drive, electro‐occulogram (EOG) was measured continuously to calculate BLINKD, and SDLAT was collected from the simulator. A mixed model anova showed a significant (P < 0.001) effect of the KSS for both dependent variables. A test for a quadratic trend suggests a curvilinear effect with a steeper increase at high KSS levels for both SDLAT (P < 0.001) and BLINKD (P = 0.003). Large individual differences were observed for the intercept (P < 0.001), suggesting that subjects differed in their overall driving performance and blink duration independent of sleepiness levels. The results have implications for any application that needs prediction at the subject level (e.g. driver fatigue warning systems) as well as for research design and the interpretation of group average data.

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.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/j.1365-2869.2006.00504.x

Cites

4 of 4 references verified0 citation errors · 0 not checkable

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.

A few free checks a day · papers already verified open instantly · results are public

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

Show all 4 references

Cited by

See all 361

Metadata

Authors
INGRE, M., ÅKERSTEDT, T., PETERS, B., ANUND, A., & KECKLUND, G.
Venue
Journal of Sleep Research
Publisher
Wiley
Published
2006-02-20
Volume
15
Issue
1
Pages
47-53
ISSN
  • 0962-1105 (ISSN-L)
  • 1365-2869
OpenAlex
W2035422567
Cited by
361
References
4
FWCI
14.51
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: Subjective sleepiness, simulated driving performance and blink duration: examining individual differences. https://app.cochat.ai/papers/10.1111/j.1365-2869.2006.00504.x
The paper
INGRE, M., ÅKERSTEDT, T., PETERS, B., ANUND, A., & KECKLUND, G. (2006). Subjective sleepiness, simulated driving performance and blink duration: examining individual differences. Journal of Sleep Research. https://doi.org/10.1111/j.1365-2869.2006.00504.x

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.