Articles tagged with Rem Sleep
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.
Researchers discovered that REM sleep tunes eating behavior by reducing the activation of hypothalamic neurons in mice, indicating the importance of sleep quality in maintaining stable feeding habits. The study suggests a long-lasting effect on neuronal activity and feeding behavior.
UC Berkeley researchers have identified a unique electrical signature in brain noise that distinguishes REM sleep from wakefulness. This breakthrough could enable the development of new diagnostic tools for sleep disorders and monitor patients under anesthesia during surgery.
A new study from Brown University finds that both non-REM and REM sleep are essential for visual learning. During non-REM sleep, the brain exhibits increased plasticity, while during REM sleep, the brain undergoes stabilization, leading to improved memory consolidation.
Research found that couples sleeping together exhibit increased rapid-eye movement (REM) sleep and synchronized sleep patterns, positively associated with relationship depth. This study suggests that sharing a bed may enhance REM sleep, leading to improved social interactions and reduced emotional stress.
Adult-born neurons in the hippocampus play a crucial role in memory consolidation during REM sleep, according to a study published in Neuron. The researchers found that activity in these neurons is necessary for memory consolidation and that synaptic changes occur during learning, enabling memory formation.
Research published in Neuron found that adult-born neurons are essential for synaptic structural remodeling and memory consolidation during rapid eye movement sleep in mice. The study used optogenetics to manipulate ABN activity during REM sleep and showed that reactivation of ABNs during sleep consolidates memory.
Researchers found that the brain filters out external sounds during REM sleep, prioritizing meaningful speech during light sleep. This mechanism enables the brain to protect the dreaming phase, necessary for emotional balance and learning consolidation.
A study at the University of Gothenburg found that wind turbine noise influences people's perception of restorative effects of sleep and has a small but significant effect on dream sleep. Participants who lived near wind turbines reported worse sleep quality during quiet nights.
Researchers from the University of Tsukuba identify brainstem neurotensinergic neurons as crucial for regulating non-REM (NREM) sleep. The study found that these neurons promote NREM sleep by producing the neuropeptide neurotensin, which also plays a role in pain and metabolism.
A new deep learning model can identify sleep stages with high accuracy, opening up new avenues for diagnostics and treatment of sleep disorders like obstructive sleep apnea. The model's accuracies are equivalent to those of experienced physicians, but it has the benefit of being systematic and faster.
A new study suggests that reward only improves visual perceptual learning if participants follow up the task with sleep. The researchers found that reward reinforces neural circuits between reward and visual areas of the brain, which are then more likely to reactivate during sleep to facilitate task learning.
Bern researchers have identified the neurons responsible for rapid eye movements (REM) during sleep, a characteristic of paradoxical sleep with high dream activity. The discovery was made by a team of scientists who found that activation of these neurons causes rapid eye movement and can be used to study the function of this phenomenon.
Scientists at the University of Tsukuba created an AI program called MC-SleepNet to automatically classify mouse sleep stages, achieving 96.6% accuracy and high robustness against noise in biological signals. This system can significantly assist researchers by automating data annotation, accelerating research on sleep patterns.
A recent study found that almost 60% of older men and women experienced sleep apnea during dream sleep, which is associated with adverse cardiovascular outcomes. Women were more likely to be undertreated for sleep apnea due to lower sensitivity to changes in ventilation and less airway collapsibility.
A new study found that military veterans with post-traumatic stress disorder (PTSD) are more likely to experience a rare sleep disorder called REM sleep behavior disorder (RBD), which is also linked to an increased risk of developing neurodegenerative conditions like Parkinson's disease. Researchers hope that identifying patients with ...