Articles tagged with Rem Sleep
Scientists have identified the two neural centers responsible for regulating sleep patterns, revealing that disruptions to these centers can cause jet lag. The study found that deep sleep is more closely tied to light-dark cycles, while REM sleep follows a separate internal clock, leading to a delay in adaptation to new schedules.
Researchers discovered a new way to monitor sleep and potentially diagnose sleep disorders by analyzing heart rate, revealing significant relationships between cardio-respiratory synchronization patterns and sleep stages. This technique may help clinicians diagnose sleep disorders more easily and determine optimal treatments.
A new study reveals that children with attention deficit/hyperactivity disorder (ADHD) have a shorter total sleep time and reduced rapid eye movement (REM) sleep compared to healthy controls. This intrinsic sleep problem may contribute to the symptoms of ADHD.
A recent study published in Neurology reveals that patients with REM sleep behaviour disorder are at a high risk of developing neurodegenerative diseases such as Parkinson's and Alzheimer's. The study found that nearly half of patients with this condition develop a neurodegenerative disease within 12 years of diagnosis.
Children and adolescents who get less REM sleep are more likely to be overweight. In the study, those who were overweight slept about 22 minutes less per night compared to normal-weight individuals.
Research suggests that older adults require less sleep than younger individuals, with a decline in both the quality and quantity of sleep. This finding has implications for the treatment of insomnia in older adults, who may overestimate their need for sleep and use medications unnecessarily.
Research suggests that reduced REM sleep is associated with increased risk of being overweight in children and adolescents. According to a study, one hour less of total sleep or REM sleep increases the odds of being overweight by two- to three-fold.
A recent study has found that increased fat intake is associated with lower REM sleep, higher arousal and apnea-hypopnea indexes, and reduced sleep efficiency. Healthy adults who consume high amounts of fat before bed may experience negative effects on their sleep patterns.
A recent study found that decreased nighttime sleep time is associated with an increase in REM sleep percentage during subsequent naps. The research, which involved 24 healthy subjects, discovered that even within the normal range, reduced nightly total sleep time led to a higher proportion of REM sleep during afternoon naps.
A study published by the American Academy of Sleep Medicine found that children with Down Syndrome have more fragmented sleep and frequent awakenings compared to typically developing children. The study suggests that this may be an independent issue and may impact cognitive, behavioral, and physical growth.
A new type of anesthetic, ethyl carbamate or urethane, has been found to induce the full spectrum of natural sleep stages, including slow-wave sleep and rapid eye movement (REM) sleep. This breakthrough discovery allows researchers to fine-tune sleep medications and anesthetics, ultimately benefiting patients with sleep disorders.
A study published in JCSM finds no significant differences in sleep parameters between patients undergoing sleep studies in a hotel and a hospital-based sleep laboratory. Sleep architecture changes, including REM sleep latency and stage 1 sleep, were similar in both groups.
A new study found that methylphenidate treatment improved sleep parameters in adults with ADHD, including increased sleep efficiency and a feeling of improved restorative value. The study also showed that objective and subjective sleep problems in adults with ADHD are identical to those in children with ADHD.
A study published in SLEEP found that REM sleep deprivation in rats reduced cell proliferation by 63% compared to non-deprived controls. This suggests a critical role for REM sleep in facilitating brain plasticity and adult neurogenesis.
A study found that sleep deprivation excessively boosts the part of the brain connected to depression, anxiety, and other psychiatric disorders. The amygdala becomes hyperactive in response to negative visual stimuli, shutting down the prefrontal cortex and preventing the release of chemicals needed for calmness.
A study found that persons with narcolepsy with cataplexy have significantly lower levels of CSF hypocretin-1 than those without cataplexy or other conditions. Patients with low hypocretin-1 values experienced more severe cataplectic attacks.
A study published in the journal SLEEP found that narcoleptics have a high frequency of REM sleep without atonia, leading to abnormal muscle activity. In contrast, patients with idiopathic REM sleep behavior disorder (RBD) had a higher percentage of REM sleep without atonia but lower REM density.
A study found that a generic drug called prazosin improves sleep quality and reduces trauma nightmares in veterans with posttraumatic stress disorder (PTSD). The drug, already used for high blood pressure and prostate problems, was shown to improve overall well-being and functioning.
Research suggests that out-of-body experiences can occur during both sleep-wake transitions and near-death experiences, possibly due to brain arousal system disturbances. The study found a strong association between sleep paralysis and out-of-body experiences in near-death experience subjects.
A study published in the SLEEP journal found that brain areas hyperactivated during cataplexy in a narcoleptic patient resemble those active during normal REM sleep, but without other characteristic features. This discovery may help explain how narcolepsy's cataplexy symptom occurs.
A new study by Saint Louis University researchers reveals that people with sleep apnea are at a higher risk for ventricular premature contraction, a type of irregular heartbeat that can be fatal. The study found that sleep apnea exacerbates the condition, especially during REM sleep, and may lead to sudden death if left untreated.
A recent study found that a moderate dose of alcohol consumed by young women an hour before bed is associated with increased sleep intensity. The study also showed a decrease in rapid eye movement (REM) sleep and a slight increase in deep sleep, as well as signs of increased sleep intensity during non-REM sleep.
A study found that 45% of patients with REM sleep behaviour disorder developed neurodegenerative diseases, highlighting its potential as an early detection tool. Patients who had suffered from the disorder for longer time were more likely to develop a neurodegenerative disease.
A study found that REM sleep behavior disorder is a precursor to neurodegenerative diseases such as Parkinson's disease and dementia with Lewy bodies. Patients with RBD are at increased risk for developing these conditions, which can lead to serious consequences like brain hemorrhages and death.
A recent study at Mayo Clinic suggests a strong association between REM sleep behavior disorder (RBD) in younger patients and antidepressant use. The study found that 80% of RBD patients under 50 years old used antidepressants, compared to 15% of those over 50.
A recent study published in Neurology found that individuals who have had near-death experiences tend to experience REM state intrusion, which can disrupt normal sleep-wake patterns. This phenomenon was observed in 60% of people with near-death experiences, compared to 24% of those without.
Researchers developed a novel graph, called a 'sleep spectrogram,' to monitor sleep stability. The approach uses only an electrocardiogram and can help diagnose conditions like sleep apnea and depression.
Researchers investigated neural activity associated with infant sleep states in rats using techniques such as neural recording and microlesioning. The study found striking parallels between the active sleep of week-old rats and conventional definitions of adult sleep, indicating a developmental continuity between infancy and adulthood.
A recent study by the University of Alberta found that melatonin supplements have little to no benefit for individuals suffering from sleep disorders or experiencing jet lag. While some people may fall asleep sooner with melatonin supplementation, its effects on overall sleep quality are minimal.
A 73-year-old woman lost all dreaming and most brain functions following a stroke, but regained some dreaming function over time. Researchers found that the damaged area of her brain was involved in visual processing and emotions.
A new study finds that nocturnally migrating songbirds skimp on sleep without suffering negative effects, unlike other animals. By studying captive white-crowned sparrows over a year, researchers found the birds' brains showed no signs of sleep deprivation during migration periods.
Researchers tested two scents, peppermint and pyridine, on six participants in their early 20s during different stages of sleep. No one responded to peppermint during sleep, while responses to pyridine were infrequent and non-wake-inducing. In contrast, sound consistently woke participants regardless of the sleep stage.
Researchers recorded neuronal firing patterns in rats during normal sleep-wake cycles and found that neural activity reappeared after novel experiences for up to 48 hours. This reverberation was enhanced during slow-wave sleep and may support a mechanism for recalling and amplifying memories.
Researchers used neural recording technology to find 'reverberations' of brain wave patterns after novel experiences, which lingered in areas for up to 48 hours. The study suggests that slow-wave sleep amplifies memory traces and REM sleep triggers gene expression for memory storage.
A randomized study found that physostigmine reduces sleep-disordered breathing in patients with moderate to severe obstructive sleep apnea, particularly during REM sleep. The results suggest a possible new treatment for the condition.
A Mayo Clinic study found that melatonin treatment was successful for 57% of patients with violent sleep disorder, reducing nightmare quality and tendency to act out dreams. The researchers, led by Dr. Brad Boeve, suggest that melatonin may be an effective option for treating this condition.
Researchers found that recovering alcoholics experience persistent sleep disruptions for many months after quitting drinking, with problems with sleep onset being worse than sleep maintenance. Many former alcoholics reported pre-existing sleep problems that predated their alcohol dependence.
Researchers found a major neurochemical deficit in patients with multiple system atrophy, a rare degenerative disease, which correlates with worsened sleep problems. The study suggests that brain chemistry disruptions may also be linked to other neurological diseases like Parkinson's.
Research suggests that mother-infant bed sharing is associated with higher infant heart rates, particularly in non-REM sleep stages. The study found a significant increase in heart rate during bed sharing nights, with smaller increases seen during REM sleep.
Researchers found a significant association between the DQB1_05 and _04 alleles and sleepwalking disorder, suggesting that these genes play a role in disorders of motor control during sleep. The study identified Ser74 as a key genetic marker for sleepwalking, providing new insights into its underlying mechanisms.
Research suggests that lying awake for long periods and having disrupted sleep patterns increase the risk of death among older adults. Interventions aiming to improve sleep quality may also prolong life and enhance overall well-being in this age group.
A new animal study reveals regional differences in brain activity during sleep, contradicting previous theories on sleep deprivation. The study found that different parts of the brain regulate sleep intensity, with frontal cortex involvement and hemispheric asymmetries playing a crucial role.
Researchers found that power naps of 30 minutes or more can prevent burnout and improve performance on tasks, with longer naps boosting performance even after waking. This is due to slow wave sleep, which refreses neural networks involved in the task, allowing for enhanced learning and restoration of perceptual performance.
A study of 74 adult patients with sleepwalking found a strong association with the HLA DQB1*05 genetic susceptibility, which also increases muscle activity during REM sleep. Researchers believe treating underlying health issues may help improve or resolve sleepwalking.
A UCLA/VA neuroscientist's review of REM sleep studies reveals that sleep is not necessary for memory formation. While sleep loss can affect concentration and performance, it does not appear to be essential for learning.
Researchers found two stages of age-related deterioration of sleep quality: the first between young adulthood (16-25) and mid-life (35-50), and the second after age 50. Changes in sleep quality were mirrored by changes in hormone secretion, particularly growth hormone, which declined significantly with age.
Researchers found that modulating the cholinergic system significantly impacts schizophrenia symptoms, with potential therapeutic benefits for positive and negative symptoms. The study challenges decades-long dominance of the dopaminergic system in schizophrenia research.
Researchers discover that exposure to novel environments stimulates the zif-268 gene during sleep, which may help consolidate memories. During REM sleep, this gene is reactivated in rats that explored new environments, suggesting a crucial role in memory processing.
Researchers discovered a connection between a brain hormone called orexin and narcolepsy, a severe sleep disorder. The study found that mice lacking the orexin gene exhibited abnormal sleep patterns and behaviors similar to those of humans with narcolepsy.
The Narcolepsy Network is launching a nationwide initiative to raise awareness about narcolepsy, a chronic neurological sleep disorder that affects an estimated 125,000 Americans. The 'Wake Up to Narcolepsy' program aims to educate people with the condition and their physicians about symptoms, diagnosis, and treatment options, helping ...
Research suggests that REM sleep plays a crucial role in protecting the cornea from suffocation by circulating aqueous humor. This theory challenges the conventional view of REM as a dream-processing mechanism, proposing a new purpose for this stage of sleep.