While the first references to the system of sleepiness assessment are
associated with medical re-search and the study of the effects of drugs on
sleep, currently subjective sleepiness assessment is widely used across
fundamental and practically oriented studies. The Stanford Sleepiness Scale
(SSS) and the Karolinska Sleepiness Scale (KSS) are often used as ground truth
in sleepiness re-search. Only a few studies applied both scales and practically
none aimed at studying their con-sistency and specific features. The present
study is devoted to analyzing the dynamics and con-sistency of subjective
sleepiness as measured by the KSS and the SSS in the adult population. A
particular task of the paper is to present the Subjective Sleepiness Dynamics
Dataset (SSDD) with the evening and morning dynamics of situational subjective
sleepiness. A total of 208 adults took part in the experiment. The results of
the study revealed that sleepiness generally increased from evening till night
and was maximal at early morning. The SSS score appeared to be more sensitive
to some factors (e.g., the presence of sleep problems). The SSS and KSS scores
were strongly consistent with each other. The KSS showed a generally more even
distribution than the SSS. SSDD continues to be collected, we are going to
equalize the sample by sex, we are actively adding older people. We plan to
collect a sample of 1,000 people. Currently SSDD contains a lot of in-formation
that can be used for scientific research.Comment: 18 pages, 6 figures, 3 table