| When supplemental oxygen was given, all six infants had an increase in sleep duration due largely to an increase in REM sleep. |
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| Patient reports of dreams experienced during REM sleep tend to be bizarre and detailed, with storyline plot associations. |
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| This is especially true in infants, who spend most of their time in sleep, and most importantly in REM sleep. |
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| Suppression of motor output to pharyngeal dilator muscles during non-REM and REM sleep promotes airway closure. |
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| The time from the first stage of deepening sleep to REM sleep is truncated. |
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| Histological staining techniques also confirmed that programmed cell death had taken place after the rats had been deprived of REM sleep. |
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| While most mammals and birds show signs of REM sleep, reptiles and other cold-blooded animals do not. |
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| Most frightening dreams occur during REM sleep, and most REM-altering disorders and medications affect dreaming. |
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| Some think the process is akin to REM sleep, where eye movements accompany the digestion of daytime memories. |
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| It happens during three distinct periods during the night called rapid eye movement or REM sleep. |
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| As soon as her telepathic abilities discern that we have reattained REM sleep, she cries again. |
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| Moreover, the percentage of stable breathing diminished with increasing age, body mass index, REM sleep, and supine position. |
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| Thus, the model used in this study has important features similar to the neural events during natural REM sleep. |
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| Although alcohol can make you drowsy and is in fact a depressant, it can cause a restless sleep and actually may deprive you of needed REM sleep. |
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| Sleep is fragmented by frequent arousals and awakenings, resulting in decreased or absent slow-wave and REM sleep. |
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| Norepinephrine and serotonin are involved in the loss of muscle tone during REM sleep. |
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| For the purpose of this paper we will concentrate on the types of dreams that are normally reported when subjects are awakened from REM sleep. |
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| Melatonin had no effect on sleep quality, wakefulness, total sleep time, or percentage of time spent in REM sleep. |
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| Obstructive apneas and hypopneas are most commonly observed during REM sleep in children. |
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| People who don't sleep for long enough or who sleep very lightly, become deprived of REM sleep. |
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| But when they were tested immediately after being awakened from REM sleep, the exact opposite happened. |
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| While REM sleep is when most dreaming occurs, it's believed the slow-wave portion is the most rejuvenating part of the sleep cycle. |
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| During REM sleep, we dream, and babies twitch and move around. |
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| The polygraphic recordings were analyzed at 30-second intervals and classified as NREM sleep, REM sleep, or undetermined sleep according to recommended criteria. |
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| On the other hand, in REM sleep, the respiratory variability persists even after deafferentation, suggesting that central REM processes underlie the variability. |
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| The increase in the power of LF component during the postapneic hyperventilation was significantly more pronounced in non-REM sleep than in REM sleep. |
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| And yet others think that dreams are just random images, which are caused by the fact that the brain matures during REM sleep. |
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| The first two cycles include more non-REM sleep and the last more REM sleep. |
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| Failure of the autonomic system results in alveolar hypoventilation that occurs most often during REM sleep phases. |
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| Alcohol also impedes the body's ability to maintain REM sleep, which affords the deepest sleep and recuperation. |
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| Since most REM sleep takes place in the later part of the night, mornings are likely to be the most favorable time for lucid dreaming. |
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| If the participant falls asleep during the nap, they are allowed to sleep for 15 minutes whether or not REM sleep occurred. |
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| Zopiclone delayed the onset of REM sleep but did not reduce consistently the total duration of REM periods. |
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| The ratio of cortical arousal to subcortical activation was significantly smaller in the infants who died of SIDS than in the control infants during REM sleep. |
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| For instance, in active REM sleep, breathing and pulse may be irregular, and small muscular twitches are common. |
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| Other species cannot provide information about mental processes during sleep, so controversy surrounds the question of whether or not animals are dreaming during REM sleep. |
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| Franco and colleagues have demonstrated that infants born to smoking mothers have a higher arousal threshold to auditory stimuli during REM sleep. |
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| If you're awakened during REM sleep, you may recall vivid dreams. |
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| Previous studies have shown that the right hemisphere is responsible for the eye movements in REM sleep, which are saccadic scans of targets in the dream scene. |
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| These stages progress in a cycle from stage one to REM sleep, then the cycle starts over again with stage one. |
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| During REM sleep, your eyes move back and forth very fast behind your eyelids. |
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| Problems arise if you take it for a long time, as the body needs to dream and you will catch up on REM sleep at the earliest opportunity. |
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| Researchers wonder if the need for REM sleep, with its buzzing brain activity, has something to do with that. |
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| Babies and children experience a larger portion of dream sleep than adults, and adults who are in school or undergoing intense training increase their amount of REM sleep. |
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| The tonic events associated with REM sleep includes desynchronization of the cortical EEG, theta rhythm in the hippocampus and muscle atonia. |
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| From the age of 9 months, babies fall asleep into slow wave sleep, like adults, while they fall asleep into active and then REM sleep under the age of 9 months. |
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| Depriving the brain of REM sleep by shortening the nightly sleep period from eight to six hours may significantly affect learning and retention. |
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| We have around an hour and a half of REM sleep each night, but we forget most of what we dream about. |
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| Most dreaming occurs during REM sleep, when a person's eyes flick back and forth rapidly. |
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| Brain imaging and sleep-laboratory data clearly delineate among wakefulness, REM sleep, and non-REM sleep, the Harvard scientists note. |
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| The review has clarified that alcohol shortens the time it takes to fall asleep, increases deep sleep, and reduces REM sleep. |
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| When the neurons were activated, sleeping mice entered REM sleep within seconds. |
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| Those in the theta range foster deep meditation and REM sleep, and frequencies in the alpha wave range encourage relaxation. |
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| They only have to lie down for an hour or two every few days to meet their minimum REM sleep requirements. |
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| Our new study examined whether the dream-lag effect occurs only for REM sleep dreams, or for both REM and NREM dreams. |
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| Various regions of the brain affect REM sleep, but neuroscientists have found a group of neurons in the medulla that seem to play a key role. |
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| If you don't get enough sleep or if you're rudely awakened every morning by your alarm clock, you may be constantly interrupting an REM sleep cycle. |
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| More naps occurred when there was a deficit of stage two and REM sleep, which is surprising since it is the SWS that is associated with the recuperative or homeostatic aspect of sleep. |
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| You merely interrupted my REM sleep experiment. |
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| This may be important for normal brain development during infancy, which would explain why infants spend more time in REM sleep than adults. |
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| Scientists think that almost all mammals and birds have dreams because they have periods of brain electrical activity that match REM sleep in humans. |
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| During REM sleep the stress hormone, noradrenalin, is switched off. |
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| Generally, OSA is worse in REM sleep compared to non-REM sleep because of neurologically mediated impairment of skeletal muscles of upper airway and ventilation. |
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| An alternative hypothesis is that people and animals use REM sleep to work through things they've learned, for instance, a rat might rerun a maze. |
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| A few periods of apnoea or hypopnoea may arise during REM sleep. |
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| Under ordinary circumstances, movement is actively inhibited during REM sleep so as to overcome the powerful phasic motor activity that occurs during dreaming. |
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| My scores for light, deep, and rem sleep were well within normal, but I still felt sleepy in the morning. |
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