A Brief Study on REM (Rapid Eye Movement)

Ranjit Kumar Yadav; Shailendar R

doi:10.37591/.v10i1.4124

Abstract

Human sleep is broadly classified into two groups: rapid eye movement (REM) and non-rapideye movement (NREM). According to the American Academy of Sleep Medicine (AASM) sleepscoring manual, NREM stage is further divided into N1, N2 and N3 stages with theprogression of sleep. The standard method of sleep analysis is known as polysomnography(PSG), where several physiological signals are acquired, visually analyzed by sleeptechnicians and scored into various stages. Manual analysis and scoring of sleep from PSGtraces (acquired in a clinic or at home) is a tedious task that can take 2–4 h for scoring anentire night sleep data. It is also prone to subjectivity between scorers with an inter-rateragreement of 82%. An automatic sleep staging method would help alleviate both inter-raterand intra-rater disagreements, reduce analysis time and cost of PSG tests.Keywords: EOG, EMG, Eye, intra-rater, inter-rater rapid