Such stuff as REM and NREM dreams are made on? An elaboration

2013 ◽  
Vol 36 (6) ◽  
pp. 634-659 ◽  
Author(s):  
Sue Llewellyn
Keyword(s):  
Eye Movement ◽  
Sleep Disturbances ◽  
Current Knowledge ◽  
Sleep Cycle ◽  
Rapid Eye Movement ◽  
Cortical Networks ◽  
Methodological Challenges ◽  
Episodic Memories ◽  
Natural Groups

AbstractI argued that rapid eye movement (REM) dreaming is elaborative emotional encoding for episodic memories, sharing many features with the ancient art of memory (AAOM). In this framework, during non–rapid eye movement (NREM), dream scenes enable junctions between episodic networks in the cortex and are retained by the hippocampus as indices for retrieval. The commentaries, which varied in tone from patent enthusiasm to edgy scepticism, fall into seven natural groups: debate over the contribution of the illustrative dream and disputes over the nature of dreaming (discussed in sect. R1); how the framework extends to creativity, psychopathology, and sleep disturbances (sect. R2); the compatibility of the REM dream encoding function with emotional de-potentiation (sect. R3); scepticism over similarities between REM dreaming and the AAOM (sect. R4); the function of NREM dreams in the sleep cycle (sect. R5); the fit of the junction hypothesis with current knowledge of cortical networks (sect. R6); and whether the hypothesis is falsifiable (including methodological challenges and evidence against the hypothesis) (sect. R7). Although the groups in sections R1–R6 appear quite disparate, I argue they all follow from the associative nature of dreaming.

Effects of sleep-promoting factor from human urine on sleep cycle of cats

1981 ◽  
Vol 241 (4) ◽  
pp. E269-E274
Author(s):  
J. E. Garcia-Arraras
Keyword(s):  
Cerebrospinal Fluid ◽  
Eye Movement ◽  
Slow Wave ◽  
Human Urine ◽  
Slow Wave Sleep ◽  
Sleep Cycle ◽  
Rapid Eye Movement ◽  
Rapid Eye Movement Sleep ◽  
Artificial Cerebrospinal Fluid ◽  
Normal Sleep

Slow-wave sleep (SWS) and rapid-eye-movement sleep (REM) were recorded in cats for 32 h a) under control conditions, b) following intraventricular infusions of artificial cerebrospinal fluid (CSF), and c) following infusions of sleep-promoting factor S prepared from human urine (SPU). During the first 12 h after receiving artificial CSF, the cats slept 4.9 +/- 0.2 h in slow-wave sleep (SWS) and 1.4 +/- 0.1 h in REM. Similar values were obtained from the same cats under control conditions. After infusions of SPU, the duration of SWS in the same cats increased to an average of 6.9 +/- 0.5 h with no significant change in REM averaged over 12 h; a transient decrease of REM in the first 4 h was fully compensated in subsequent hours. The increased SWS induced by the sleep-promoting factor from human urine subsided after 12 h, and there was no compensatory increase in wakefulness during the subsequent 20 h. The normal sleep cycle was not affected. In cats, therefore, the primary effect of SPU is to increase normal SWS, with little effect on REM.

scholarly journals Consolidation of Strictly Episodic Memories Mainly Requires Rapid Eye Movement Sleep

SLEEP ◽  
2004 ◽  
Vol 27 (3) ◽  
pp. 395-401 ◽  
Author(s):  
Géraldine Rauchs ◽  
Françoise Bertran ◽  
Bérengère Guillery-Girard ◽  
Béatrice Desgranges ◽  
Nacer Kerrouche ◽  
...  
Keyword(s):  
Eye Movement ◽  
Rapid Eye Movement ◽  
Rapid Eye Movement Sleep ◽  
Episodic Memories

EEG and sleep disturbances during dives at 450 msw in helium-nitrogen-oxygen mixture

1997 ◽  
Vol 83 (2) ◽  
pp. 575-582 ◽  
Author(s):  
J. C. Rostain ◽  
M. C. Gardette-Chauffour ◽  
R. Naquet
Keyword(s):  
Eye Movement ◽  
Sleep Disturbances ◽  
Sea Water ◽  
Nitrogen Addition ◽  
Oxygen Mixture ◽  
Sleep Stages ◽  
Rapid Eye Movement ◽  
Rapid Eye Movement Sleep

Rostain, J. C., M. C. Gardette-Chauffour, and R. Naquet. EEG and sleep disturbances during dives at 450 msw in helium-nitrogen-oxygen mixture. J. Appl. Physiol. 83(2): 575–582, 1997.—To study the effects of nitrogen addition to the breathing mixture on sleep disturbances at pressure, two dives were performed in which helium-nitrogen-oxygen mixture was used up to 450 m sea water (msw). In total, sleep of 12 professional divers was analyzed (i.e., 184 night records). Sleep was disrupted by compression and by stay at 450 msw: we observed an increase in awake periods and in sleep stages I and II and a decrease in stages III and IV and in rapid-eye-movement sleep periods. These changes, which were more intense at the beginning of the stay, began to decrease from the seventh day of the stay, but the return to control values was recorded only during the decompression at depths below 200 msw. These changes were equivalent to those recorded in other experiments with helium-oxygen mixture in the same range of depths and were independent of the intensity of changes recorded in electroencephalographic activities in awake subjects.

scholarly journals Don't count your chickens before they're hatched: Elaborative encoding in REM dreaming in face of the physiology of sleep stages

2013 ◽  
Vol 36 (6) ◽  
pp. 613-614
Author(s):  
Gaétane Deliens ◽  
Sophie Schwartz ◽  
Philippe Peigneux
Keyword(s):  
Eye Movement ◽  
Rem Sleep ◽  
De Novo ◽  
Nrem Sleep ◽  
Sleep Stages ◽  
Rapid Eye Movement ◽  
Hidden Patterns ◽  
Episodic Memories ◽  
Novel Associations

AbstractLlewellyn suggests that episodic memories undergo “elaborative encoding” during rapid eye movement (REM) dreams, generating novel associations between recent and remote memories that are then instantiated during non-REM (NREM) sleep. This hypothesis conflicts with our knowledge of the physiology of NREM and then REM sleep stages and their ordered succession. Moreover, associations during sleep might also involve the extraction of hidden patterns rather than de novo associations.

scholarly journals Differences in Sleep Disorders between HIV-Infected Persons and Matched Controls with Sleep Problems: A Matched-Cohort Study Based on Laboratory and Survey Data

2021 ◽  
Vol 10 (21) ◽  
pp. 5206
Author(s):  
Yen-Chin Chen ◽  
Chang-Chun Chen ◽  
Patrick J. Strollo ◽  
Chung-Yi Li ◽  
Wen-Chien Ko ◽  
...  
Keyword(s):  
Sleep Disorders ◽  
Eye Movement ◽  
Sleep Disturbances ◽  
Sleep Disordered Breathing ◽  
Behavior Disorder ◽  
Movement Behavior ◽  
Rapid Eye Movement ◽  
Sleep Study ◽  
Psychological Disturbances ◽  
Disordered Breathing

Objectives: Sleep disturbances are prevalent problems among human immunodeficiency virus (HIV)-infected persons. The recognition of comorbid sleep disorders in patients with HIV is currently hampered by limited knowledge of sleep-related symptoms, sleep architecture, and types of sleep disorders in this population. We aimed to compare the differences in sleep-related symptoms and polysomnography-based sleep disorders between HIV-infected persons and controls. Methods: The study evaluated 170 men with a Pittsburgh sleep quality index scores greater than 5, including 44 HIV-infected men and 126 male controls who were frequency-matched by sex, age (±3.0 years) and BMI (±3.0 kg/m2). For all participants, an overnight sleep study using a Somte V1 monitor was conducted. Differences in sleep-related symptoms and sleep disorders between HIV-infected patients and controls were examined using t-tests or chi-square tests. Results: HIV-infected persons with sleep disturbances more often had psychological disturbances (72.7% vs. 40.5%, p < 0.001) and suspected rapid eye movement behavior disorder (25.0% vs. 4.8%, p < 0.01) than controls. Sleep-disordered breathing was less common in HIV-infected persons than in controls (56.8% vs. 87.3%, p < 0.001). The mean percentage of rapid eye movement sleep was higher among HIV-infected patients than among controls (20.6% vs. 16.6%, p < 0.001). Nocturia was more common in HIV-infected persons than in controls (40.9% vs. 22.2%, p = 0.02). Conclusions: Psychological disturbances and sleep-disordered breathing can be possible explanations of sleep disturbances in HIV-infected persons in whom sleep-disordered breathing is notable. Further studies are warranted to examine the underlying factors of rapid eye movement behavior disorder among HIV-infected persons with sleep disturbances.

scholarly journals The Process of Rapid Eye Movement (REM) Sleep in the Qur'an: Neuroscience Perspective on the QS. Al-Kahfi 18.

2021 ◽  
Vol 22 (2) ◽  
pp. 329
Author(s):  
Raden Kurnia Kholiska ◽  
Afrizal Nur ◽  
Ridhoul Wahidi
Keyword(s):  
Eye Movement ◽  
Data Interpretation ◽  
The Body ◽  
Scientific Concept ◽  
Sleep Cycle ◽  
Rapid Eye Movement ◽  
Eyes Open ◽  
Using Data ◽  
The Right ◽  
And Control

This study aims to understand the scientific concept of sleep in the Qur'an by using data interpretation of QS. Al-Kahfi 18, which is collaborated with neuroscience. The phenomenon of sleep in the story of Ashabul Kahfi is found in QS Al-Kahfi 18. Classical scholars interpreted the verse especially in words aiqazhan wa hum ruqud, meaning that they slept even though many thought they were awake. This interpretation tends to be interpreted as a supernatural phenomenon, whereas in science, such events are paradoxical, which is a phenomenon of open eyes during sleep. This research is qualitative research by utilizing the interpretation of QS. Al-Kahfi 18 and has collaborated with neuroscience. The results of this study showed that the phenomenon of aiqazhan wa hum ruqud in QS Al-Kahfi 18 or between waking and sleeping in neuroscience perspective is a the process of REM (Rapid Eye Movement). Based on a neuroscience the word aiqazhan can be interpreted with the meaning of unsleeping in the phenomenon of rapid eye movement. That is loss of consciousness and control over the body so that it can move unnoticed. It is illustrated in the story of Ashabul Kahfi in QS. Al-Kahfi 18. They fall asleep hundreds of years in the cave, while their eyes open while asleep, and their bodies move to the right and the left. Anyone who sees it will think they are awake, whereas the phenomenon is the body's reaction to the rapid eye movement phase in the sleep cycle.

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