Αποτελέσματα Αναζήτησης
1 Δεκ 2023 · Overall, the presence of REM, N2, sleep cycles, and N3 were associated with a normal sleep structure by experts. In contrast, wake, N1, and overall sleep fragmentation (i.e. a high amount of sleep stage changes per hour) contributed to an evaluation of an abnormal hypnogram.
8 Αυγ 2008 · Power spectral analysis of the sleep electroencephalogram (EEG), 6 sleep spectrograms based on cardiopulmonary coupling, 7 and visual identification of cyclical alternating patterns 8 in sleep EEG have revealed clinically meaningful changes in the sleep structure in health and disease.
16 Ιουν 2020 · On a hypnogram, a sleep cycle is usually around 90 minutes and there are four to six cycles of rapid eye movement (REM) sleep/non-REM sleep stages that occur during a major period of sleep. Most slow-wave sleep occurs in the first one or two cycles; this is the deepest period of sleep.
In spite of normal sleep cycling and only minor disruption of sleep continuity, the hypnogram clearly illustrates a consistent pattern of REM-related hypoxemia during sleep due to central and obstructive apneas.
Disruptions or irregularities to the normal sleep cycle or sleep stage transitions can be detected; for example a hypnogram can show that in obstructive sleep apnea (OSA) the stability of transition between REM and NREM stages is disrupted. [10] The effects of certain medications on sleep architecture can be visualised on a hypnogram.
14 Ιαν 2024 · Machine learning assessment showed that certain features of sleep stage distribution, sleep cycles, and sleep fragmentation are important predictors for expert interpretation. The present study thus tackles the gap of knowledge regarding the rating of hypnograms in a comprehensive way.
30 Οκτ 2023 · Qualitative results showed mixed findings regarding the association between sleep disturbances and temporal summation of pain (TSP) and conditioned pain modulation (CPM), with poor sleep more commonly associated with decreased pain inhibition in both populations.
