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Rem Sleep

All articles tagged with #rem sleep

TV bedtime habit carries a hidden REM sleep cost rooted in childhood safety cues
health15 days ago

TV bedtime habit carries a hidden REM sleep cost rooted in childhood safety cues

Many people fall asleep with the TV on not out of laziness but because childhood associations of voices in another room signaled safety; new research shows that continuous background sound, especially pink noise at about 50 decibels, can reduce REM sleep by nearly 19 minutes per night, a cost that accumulates over time and may affect memory, emotion, and development. The habit serves three functions—sensory masking, cognitive distraction, and ongoing processing during sleep—but the final impact is a less restorative sleep architecture. Changing the pattern usually works best with gradual decoupling (e.g., using a timer or audio-only alternatives) and addressing underlying anxiety rather than simply turning off the TV.

via Silicon Canals|
#background-noise#health#neuroscience
Hidden thalamic rhythm may mark conscious brain states
health1 month ago

Hidden thalamic rhythm may mark conscious brain states

Researchers identified a new thalamic rhythm (19–45 Hz, peaking around 28 Hz) that only appears during wakefulness and REM sleep, vanishing in non-REM sleep. Detected via deep-brain recordings in epilepsy patients, this pattern is strongest near the central thalamus and closely links with rapid eye movements, suggesting it could serve as a measurable biomarker of conscious states and inform targeted brain therapies for disorders of consciousness and related conditions.

via The Brighter Side of News|
#brain#consciousness#health
THC-CBD sleep study shows altered brain rhythms and delayed dreaming phase
sleep1 month ago

THC-CBD sleep study shows altered brain rhythms and delayed dreaming phase

In a small, blinded crossover trial of twenty adults with insomnia, a single oral dose of 10 mg THC plus 200 mg CBD shortened total sleep by about 25 minutes and cut REM sleep by roughly 34 minutes, while delaying REM onset by more than an hour. High-density EEG revealed calmer activity in lighter sleep stages but reduced slow-wave activity in deep sleep and increased fast rhythms in posterior regions during REM, indicating more nocturnal arousal and shallower sleep. Next-day cognitive tests were largely unchanged, though participants reported mild sleepiness. The study’s limitations—small sample size and one-night exposure—call for longer-term research on safety and tolerability of medicinal cannabis for sleep.

via PsyPost|
#cannabis#eeg#insomnia
Midbrain–Thalamus Rhythm Identified as a Consciousness Signature
science1 month ago

Midbrain–Thalamus Rhythm Identified as a Consciousness Signature

Researchers found a 20–45 Hz thalamic oscillation, recorded via implanted electrodes in epilepsy patients, that occurs only during wakefulness and REM sleep and vanishes in non-REM sleep. This robust bio‑signature of consciousness could enable real‑time monitoring of brain states and guide adaptive deep‑brain stimulation therapies for neurological disorders, representing a potential clinical tool and a new window into how the brain sustains conscious states.

via Neuroscience News|
#consciousness#deep-brain-stimulation#neuroscience
Dream Warnings: Can Nightmares Signal Hidden Health Issues?
health4 months ago

Dream Warnings: Can Nightmares Signal Hidden Health Issues?

Experts say some dreams can function as prodromal signals of illness, but most nightmares are harmless. The piece discusses how vivid, recurring dreams may reflect stress or emerging disease, highlighting Isabella Cavallo’s case in which dreams preceded an early cervical cancer diagnosis. It also notes REM sleep disorders can precede Parkinson's disease. While not a reliable predictor for individuals, noticing meaningful dream changes and discussing them with a doctor can prompt earlier testing and healthier lifestyle adjustments.

via AOL.com|
#cervical-cancer#health#nightmares
Dreams as Health Signals: What Sleep Experts Say Your Night Visions Mean
health4 months ago

Dreams as Health Signals: What Sleep Experts Say Your Night Visions Mean

Sleep doctors say dreams are a normal part of REM sleep, likely tied to memory processing and emotional processing. While dream interpretation isn’t exact science, common themes (teeth falling out, being chased, falling, naked in public, failing a test, flying, infidelity, drowning, seeing deceased loved ones, and sex) often reflect daytime stress, fears, and personal concerns. REM sleep concentrates in the second half of the night and helps sort memories, so these nightly narratives can offer insight into your mental state, though they do not diagnose health issues by themselves.

via AOL.com|
#dreams#health#memory-processing
Snooze Dilemma: When Hitting Snooze Helps or Hurts Sleep
health5 months ago

Snooze Dilemma: When Hitting Snooze Helps or Hurts Sleep

A global six‑month study tracked more than 21,000 adults and found snoozing is common (about 2.4 extra alarms per morning); the health impact is mixed: some data suggest snoozing can reduce morning grogginess for well‑rested individuals, but it may disrupt sleep schedules and REM sleep, and evidence that a few extra minutes affect next‑day performance is limited. If snoozing masks underlying sleep problems, focus on sleep hygiene and maintaining a consistent wake time, and consult a clinician to address root causes if sleep issues persist.

via The New York Times|
#alarm#circadian-rhythm#health
Waking Up Between 3-5 AM May Signal a Message from Your Brain
health-and-wellness11 months ago

Waking Up Between 3-5 AM May Signal a Message from Your Brain

Waking up between 3-5 AM is often a sign from your body indicating stress, circadian misalignment, or sleep debt. These early awakenings are linked to natural hormonal cycles and REM sleep phases, and understanding them can help improve sleep quality by aligning routines with your biological clock, managing stress, and optimizing light exposure. Embracing your chronotype and listening to your body's signals can lead to better sleep health.

via VegOut|
#circadian-rhythm#health-and-wellness#rem-sleep
"Interpreting Birds' Dreams for Insights into Human Dreaming"
science2 years ago

"Interpreting Birds' Dreams for Insights into Human Dreaming"

New research on the avian brain and REM sleep in birds suggests that birds may dream, challenging historical assumptions about animal consciousness. Studies have revealed that birds' brains share similarities with human brains, particularly in the regions associated with planning, sensory processing, and emotional responses, which are also crucial for REM sleep. This challenges past beliefs that birds were mere automatons and opens up new possibilities for understanding the nature of dreams and consciousness across species.

via The New York Times|
#avian-brain#birds#dreams
"The Impact of Sleep Deprivation on Memory"
health2 years ago

"The Impact of Sleep Deprivation on Memory"

Sleep deprivation, even just one night of less than six hours of rest, can impair short-term memory and hinder the brain's ability to form and recall memories. The longer one goes without adequate rest, the greater the burden on the brain, with extreme sleep deprivation causing behavior similar to intoxication. Lack of REM sleep, which occurs in the final hours of rest, may lead to difficulty remembering things, increased irritability, and anxiety.

via The New York Times|
#brain-function#health#memory