Articles tagged with Rem Sleep
Researchers found that reindeer spend more time ruminating and less time in non-REM sleep, suggesting a possible restorative function of rumination. The study suggests that reindeer may be able to save time by resting during rumination, allowing them to cope with limited sleep time during the arctic summer.
Stress activates neurons in the preoptic hypothalamus during non-rapid eye movement sleep, causing microarousals that interrupt sleep cycles. Suppressing these neurons may be a promising target for therapies to treat stress-related sleep disorders like insomnia and PTSD.
Research by Hungarian researchers found that flat-faced dogs, like French Bulldogs, sleep more due to increased daytime sleepiness and longer REM sleep phases. Their EEG patterns showed signs of white matter loss and distorted brain function.
A study evaluated sleep tracking performance of various wearable devices against a reference system, considering user needs. Non-EEG wearables showed superior performance for healthy individuals who want to monitor sleep habits.
Jessica Kendall-Bar, a UCSC Ph.D. graduate, has won the Science & SciLifeLab Prize for Young Scientists for her groundbreaking research on elephant seal sleep habits while at sea. Her work revealed that these marine mammals sleep bilaterally during deep dives and have a flexible sleep duration range-wide 'sleepscape.'
A study of 1,732 adults found that 69% used the snooze function or set multiple alarms. Snoozing resulted in lost sleep but prevented awakening from slow-wave sleep. In a second study, 30 minutes of snoozing improved cognitive performance.
A study comparing dreams from Western and non-Western populations found that non-Western groups produced more cathartic and socially-oriented dreams, while Western groups had more threatening but less emotionally resolving dreams. The results suggest a strong link between societal norms and the function of dreams.
Researchers found that ordinary sleepers can pick up verbal information and respond to it by contracting facial muscles, even during most stages of sleep. The study suggests that standardized communication protocols may be possible with sleeping individuals to better understand mental activity changes during sleep.
A new study analyzing over 220,000 people's sleep data shows that those in Asia have shorter sleep duration and lower quality, with more variable sleep timing on weekdays. In contrast, people in other regions tend to have longer weekend sleep extension, suggesting a cultural impact on sleep habits.
A study from the University of Notre Dame found that recalling dreams and finding meaning in them can elicit feelings of awe, making subsequent work stressors seem less daunting. The researchers suggest promoting the 'awe experience' at work to increase productivity.
Researchers discovered that octopuses transition between quiet and active stages of sleep, with the latter resembling neural activity seen when awake. This active stage may be essential for octopus function and potentially related to dreaming.
Birds experience flight-like sensations in their dreams during REM sleep, suggesting emotional content, while cerebral spinal fluid flow is disrupted. The study reveals similarities between bird and human sleep patterns, highlighting the importance of sleep for brain health and cognition.
Researchers from Mount Sinai Health System presented new findings on the impact of customized lighting on inpatient sleep, a machine-learned combination of ventilatory, hypoxic, and arousal burdens, and the effects of obstructive sleep apnea and insomnia on cognitive impairment. The studies aim to improve sleep timing and duration, dia...
Researchers have identified a novel model and therapy to mitigate the development of REM sleep behavior disorder, which affects over 3 million Americans. Dual orexin receptor antagonists have been shown to significantly reduce dream enactment behaviors, providing a promising new treatment option.
Dogs with canine cognitive dysfunction syndrome (CCDS) display altered brain wave activity during sleep, including reduced slow-wave sleep and increased fast beta waves. This research builds on human studies linking disrupted sleep patterns to cognitive decline in Alzheimer's patients.
A new study by North Carolina State University researchers used EEGs on elderly dogs to determine whether brain-wave readings during sleep correlated with signs of cognitive decline. The study found that dogs with more advanced dementia suffered from more sleep disruptions and slept less overall than dogs with normal cognitive function.
A recent study published in Sleep Medicine warns that AI-collected data may lead to misdiagnosis of childhood sleep disorders. The lack of pediatric data used to train AI models results in biased classification, causing errors in sleep stage identification and potentially severe consequences for young patients.
Scientists recorded brain activity in wild elephant seals, revealing they take short naps during deep dives, averaging just 2 hours of sleep per day at sea. They switch between getting a lot of sleep on land and less when foraging at sea.
A new case series study found that an 8-week methylation-supportive diet and lifestyle program reduced biological age by 4.60 years, with five of six participants exhibiting significant age reversal. The study suggests that this intervention may favorably influence biological age in both sexes.
Researchers at Tohoku University found that astrocytes exhibit a stronger acid response during REM sleep in epileptic mice, which may drive specific information processing and generating plasticity. This discovery could lead to the development of a biomarker for epilepsy severity and potentially inform therapeutic strategies.
Researchers found that patients undergoing polysomnographies experienced longer REM sleep in winter than summer, but less deep sleep in autumn. The study suggests that humans may need more winter sleep to adapt to seasonal changes.
A new study by Virginia Tech neuroscientist Sujith Vijayan sheds light on the mechanisms behind PTSD patients' inability to process and extinguish fear memories during REM sleep. The researchers found that high neurotransmitter levels and altered brain rhythms disrupt the normal fear-quelling work of brain rhythms.
A new therapy combining Imagery Rehearsal Therapy with Targeted Memory Reactivation has been shown to significantly reduce nightmare frequency and increase positive dreams in patients. The treatment, which involves associating a major piano chord with positive scenarios, resulted in lasting benefits even three months after the experiment.
Researchers found that playing a sound associated with a positive daytime experience during sleep can reduce nightmare frequency and increase emotional positivity in dreams. The study's findings support the development of new therapies for treating nightmares, which affect up to 4% of adults.
Researchers used a neural network model to study how brain regions interact during sleep. They found that the hippocampus and neocortex work together to convert fleeting information into long-term memory. The findings suggest that alternating between REM and slow-wave sleep stages is crucial for strong memory formation.
A study by researchers at the University of Notre Dame found that 57 percent of participants were habitual snoozers, with females being 50 percent more likely to snooze than males. Snoozing may be a way for some people to battle exhaustion, as only 1 in 3 Americans get enough sleep.
A new UCLA study reveals a link between REM sleep duration and body temperature in animals, suggesting that REM sleep acts like a 'thermostatically controlled brain heater'. This challenges popular views on the role of REM sleep in learning and emotional regulation.
Young people with 22q11.2 Deletion Syndrome show distinct brain activity patterns during sleep, which may influence psychiatric symptoms. These differences are associated with altered connections within and between brain areas.
Researchers at UCSF found that eye movements during REM sleep are coordinated with the direction of gaze in the virtual dream world. This suggests that dreams may be a way for the brain to integrate information gathered throughout the day and create a 'perfectly harmonious fake world'.
Researchers discovered that REM sleep disturbances are linked to increased risk of drug relapse, and that targeting MCH neurons may be a promising therapeutic approach. The study found that improving REM sleep reduced cocaine-seeking behavior in rats.
Researchers measured wolf sleep using non-invasive EEG, finding similarities with dog sleep but less REM time. The study offers a unique opportunity to understand the effects of domestication and cohabitation on wolf sleep phenotypes.
A study led by Imperial College London researchers discovered that certain types of stress induce sleep in mice, which subsequently relieves anxiety. The findings suggest that a specific set of neurons detected and responded to stress hormone levels, inducing both NREM and REM sleep.
Researchers at the University of Bern have identified how the brain processes emotions during dream sleep. During REM sleep, the brain favors the discrimination of safety versus danger in the dendrites, but blocks the over-reaction to emotion, particularly danger. This decoupling is essential for optimizing survival and stability.
A study by HBP scientists found that wakefulness, non-REM sleep, and REM sleep have complementary functions for learning: experiencing stimuli, solidifying experiences, and discovering semantic concepts. This research suggests that unusual dreams, simulated using Generative Adversarial Networks, can improve brain learning by introducin...
A new study found that napping can positively affect preschool children's learning of letter-sound mappings and transfer this knowledge to reading unfamiliar words. The research suggests that naps may facilitate the acquisition and application of these fundamental literacy skills.
Researchers found that a temporary increase in dopamine levels in the basolateral amygdala initiates transitions from non-rapid eye movement (NREM) to rapid eye movement (REM) sleep. This discovery may have important implications for understanding changes in sleep state and treating conditions like cataplexy and narcolepsy.
Researchers at the University of Tsukuba investigated the effect of sevoflurane on sleep disturbance caused by systemic inflammation. Sevoflurane preconditioning promoted significant increases in REM sleep after LPS injection, while postconditioning had no effect.
Researchers found that negative emotions during dreams are associated with rapid eye movements in bursts, while positive emotions correlate with slow eye movements. This study provides new understanding of the role of REM sleep in regulating emotions and its link to mental health.
Researchers found that REM sleep has specific properties allowing rapid arousal in response to predatory stimuli. The medial subthalamic nucleus (mSTN) plays a key role in this process, producing a lowered arousal threshold during REM sleep for detecting predator threats.
A new study published in JNeurosci found that the brain selectively responds to unfamiliar voices during sleep, even when familiar voices are present. This ability allows the brain to strike a balance between resting and being responsive to its environment.
A multi-year study found that both short and long sleepers experience greater cognitive decline than those who slept a moderate amount. Researchers separated out the effects of poor sleep and Alzheimer's disease on cognition, suggesting a middle range or 'sweet spot' for total sleep time where cognitive performance is stable over time....
Researchers will investigate hidden signs of brain damage in REM behavior disorder, aiming to identify biomarkers that predict impending neurological disease. The goal is to delay the onset or prevent dementia or Parkinsonism through clinical trials.
A meta-analysis of 32 studies involving 10,243 participants found that adults and children with migraines have poorer sleep quality and shorter REM sleep times than those without migraines. Children with migraines also have less total sleep time, more wake time, and faster sleep onset.
Researchers found increased capillary blood flow in mice brains during REM sleep, indicating a possible role of adenosine A2a receptors in brain refreshing. This unique state may be crucial for waste removal from the brain, which is associated with Alzheimer's disease development.
At-risk children who participated in a mindfulness curriculum gained an average of 74 minutes of sleep per night, with rapid eye movement sleep also increasing. The study found that the curriculum was protective against sleep losses typically seen during this age period.
The American Academy of Sleep Medicine's new position statement emphasizes the biological necessity of sleep for health and well-being in children, adolescents, and adults. Insufficient sleep and untreated sleep disorders are linked to increased health risks such as cardiovascular disease, diabetes, and workplace accidents.
A new study found that dreams often combine fragments of multiple life experiences and anticipate future events, tracing back to a memory source in 53.5% of cases. The study also discovered that nearly half of reports with a memory source were connected to multiple past experiences.
Researchers developed an AI algorithm using 20,000 nights of sleep data to improve diagnoses and treatments for sleep disorders. The algorithm can analyze patient sleep patterns in seconds, freeing up medical hours that can be used to assess and diagnose more patients.
Researchers found that octopuses alternate between an 'active sleep' stage and a 'quiet sleep' stage, characterized by dynamic color changes and muscular twitches. The findings suggest that octopuses may experience something akin to dreams during the 'active sleep' state.
A study by West Virginia University found that top sleep trackers can accurately measure total sleep time and sleep efficiency, but struggle with sleep staging accuracy. Researchers tested eight commercial sleep trackers and found that some devices overestimated or underestimated sleep metrics, while others were unable to quantify slee...
Researchers found increased blood flow and dilation of brain arterioles during non-REM and REM sleep stages, indicating the brain's ability to clear waste products. This discovery could lead to a better understanding of how disrupted sleep affects mental health conditions like anxiety and depression.
A study published in Scientific Reports found that mice without gut microbes had altered sleep patterns, including increased REM and non-REM sleep episodes. The researchers discovered that gut microbes play a crucial role in producing neurotransmitters like serotonin, which regulate sleep-wake cycles.
A new study by Washington State University researchers found that improving sleep after trauma exposure can improve function and alleviate PTSD symptoms. The study used optogenetic stimulation to increase REM sleep in rats, leading to improved memory extinction and reduced freezing behavior. This suggests that manipulating sleep immedi...
Researchers analyzed 133 dream reports word by word using graph theory to show that REM dream reports have more structural connectedness than non-REM dream reports. This study confirms that dream report structure varies according to sleep stage and has implications for understanding dreams worldwide.
Researchers found that neuronal ATP levels decrease during REM sleep despite increased cerebral blood flow, indicating negative energy balance in neurons. This discovery could lead to novel biomarkers for REM sleep and insights into the brain's energy metabolism.
Researchers found thalidomide promotes sleep without disrupting the cereblon-mediated ubiquitination pathway. The drug's hypnotic effects are independent of its known teratogenic mechanism, opening doors for novel thalidomide-like hypnotic drugs.
A new model explains why sleep times decrease as brains get bigger, identifying a sharp transition at around 2.4 years of age in humans where primary purpose of sleep shifts from reorganization to repair. The research ties phylogeny and ontogeny into a unified framework.
A UCLA-led team of scientists found that sleep changes its purpose at around 2-and-a-half years old, shifting from brain-building during REM sleep to brain-maintenance and repair afterwards. This transition is crucial for clearing damaged genes and proteins from neurons, preventing serious illness.
Researchers found a connection between contact sports participation and chronic traumatic encephalopathy (CTE) leading to sleep dysfunction. The study revealed that tau pathology in brainstem nuclei is more strongly associated with sleep symptoms than Lewy body pathology, suggesting a new link between CTE and REM sleep behavior disorder.
Researchers discovered that monitoring brainwaves during REM sleep can predict which patients will respond to antidepressants, allowing for earlier treatment changes and improved outcomes. This breakthrough has significant implications for treating depression, particularly for those at risk of suicide.