A STATISTICAL OVERVIEW ON SLEEP SCORING

Year 2020, Volume: 62 Issue: 2, 115 - 122, 31.12.2020

Levent Özbek , Levent Sütçügil Hamdullah Aydın Sinan Yetkin , Fuat Özgen

https://doi.org/10.33769/aupse.745571

Abstract

In this study, sleep electroencephalography (EEG) which is frequently used in statistical modelling has been modelled with the autoregressive (AR) time-series model and what kind of a structure the variance of the term white noise included in the model represented in different sleep stages has been observed. Taking all of the stages scored in accordance with Rechtschaffen and Kales criterion into account separately, epoches in each stage have been modelled with the AR and the variance of the term white noise in this model has been monitored. The study has evaluated the sleep EEG variances of a subject. In accordance with the results, the heterogeneity at Stage 2 was thought to be the reason why the objective differences appeared in scoring. It is thought that this data pointed out a necessity that the period in Rechtschaffen and Kales scoring which is called Stage 2 must be revised.

Keywords

sleep, EEG, time series

References

• Berger, H.: Ueber das Elektroenkephalogramm des Menschen. J Psychol Neurol 40:160-179,1930.
• Aserinsky, E., Kleitman, N.: Regularly occuring periods of eye motility and concomitant phenomena, during sleep. Science 118:273-274, 1953.
• Dement, W., Kleitman, N.: Cyclic variations in EEG during sleep and their relation to eye movements, body motility and dreaming. EEG Clin Neurophysiol 9:673-690,1957.
• Rechtschaffen A., Kales A.: A manual of Standized Therminology Techniques and Scoring System for Sleep Stages of Human Subjects. Brain İnformation Service/ Brain Research İnstitute, University of California, Los Angeles, 1968.
• Bazil CW, Castro LH, Walczak TS. Reduction of rapid eye movement sleep by diurnal and nocturnal seizures in temporal lobe epilepsy. Arch Neurol 57:363-368, 2000.
• Hori T, Hayashi M, Morikowa T. Topographic EEG changes and the hypnagogic experience. In: Ogilvie RD, Harsh Jr (eds). Sleep Onset: Normal and Abnormal Processes. Washington: American Psychological Association 1994.
• Lubin A, Johson LC, Austin MT. Discrimination among states of consciousness using EEG spectra. Psychophysiol 6: 122-132, 1969.
• Olbrich E, Achermann P. Oscillatory events in the human sleep EEG- detection and properties. Neurocomputing 58:129,135, 2004.
• Özbek, L, Aliev F.A. Adaptive Fading Kalman Filter with an Application. Automatica 12: 1663-1664, 1998.
• Özbek L. Kalman Filtresi, Akademisyen Yay. 2017.