#nrem

[onseneu]

Faza NREM - cicha siła głębokiego snu 😴

To w niej następuje fizyczna regeneracja organizmu: odbudowa mięśni, wzmocnienie odporności, stabilizacja pracy serca. Faza NREM jest kluczowa dla zdrowia – ale jej jakość zależy od komfortu snu. Dlatego ważne jest, na czym śpimy i w jakich warunkach.

👉 Przeczytaj więcej na Faza NREM - co dzieje się w tej fazie snu? 📖

[johniac]

SciTech Chronicles. . . . . . . . .Jun 6th, 2025

[inthegardenofprayers]

When it comes to information processing, think of the wake state principally as reception (experiencing and constantly learning the world around you), | NREM sleep as reflection (storing and strengthening those raw ingredients of new facts and skills), and | REM sleep as integration (interconnecting these raw ingredients with each other, with all past experiences, and, in doing so, building an ever more accurate model of how the world works, including innovative insights and problem-solving abilities). | Walker, Matthew/Why We Sleep: Unlocking the Power of Sleep and Dreams

[sanetimental]

Sleep Disorders - Sleepwalking

The author demystifies the folklore of ubeng, interpreting it as a misrepresentation of sleepwalking, and highlights the complexity, potential causes, impacts and management of this sleep disorder.

While growing up, I frequently heard stories about the captivating legend of ubeng. This enigmatic phenomenon was believed to involve the malevolent influence of evil spirits that would transport unsuspecting individuals from the sanctuary of their beds at night to nearby locations. These afflicted souls would then remain in a profound slumber until the break of dawn. Astonishingly, this enduring…

[dongrangsex]

We should actually give Heath some nice night time tea and then let him sleep. Or maybe even let him have the close to obligatory 7pm cuppa, I never sleep well on nights I don't have it

YOURE SO RIGHT... give him a quiet room a weighted blanket a sleep mask some fluffy pillows and leave him there for a good 7-10 hours

[blusmarty]

How to Hack Your Sleep Cycle for Better Productivity

https://books2read.com/u/3Jk9KA

[neosciencehub]

According to a Study, Eight Hours of Sleep also Improves Language Acquisition

According to a Study, Eight Hours of Sleep also Improves Language Acquisition @neosciencehub #Sleep #sciencenews #research #lanuageacquisition #brain #neosciencehub #Neuroscience

According to a recent study, getting eight hours of sleep each night not only helps the body recover but also aids the brain in learning and storing new languages. The coordination of two electrical impulses in the sleeping brain greatly enhances human memory for new words and intricate grammatical rules, according to a team of international experts lead by the University of South Australia and…

[jim-fetter-illustrations]

REM and NREM sleep pushes the human race forward more than any other thing!

Rapid eye movement (REM) sleep is the stage of sleep where most dreams happen,..... so if you dreamed last night you were in REM sleep. Its name comes from how your eyes move behind your eyelids while you're dreaming. During REM sleep, your brain activity looks very similar to brain activity while you're awake.

REM sleep is the most satisfying sleep and you wake up refreshed rather than still tired as many people do when they turn the alarm off and go back to sleep.

We need REM sleep in order to enter NREM sleep, which is the next stage of deeper sleep after one enters REM sleep, and NREM sleep is the deepest state of sleep mode people have that maintains your health and wellbeing.

Most adults only get 20% of NREM deep sleep at night, and the more NREM deep sleep you get, the more wonderful you feel when you wake up.

Sensory Deprivation Tank Therapy is where people get up to 80% of NREM deep sleep to repair Sleep disturbances like insomnia that is affecting their overall health. These tanks improve relaxation, improve sleep, and decrease stress, anxiety, and pain, and have excellent health benefits.

A sensory deprivation tank, also called an isolation tank or flotation tank, is used for restricted environmental stimulation therapy (REST). It is a dark, soundproof tank that is filled with a foot or less of highly salted water that you float in.

WHO USES ISOLATION TANKS?

Joe Rogan, Podcaster, Comedian and UFC Commentator.

John Lennon of the Beatles fame.

Carl Lewis, Arguably the greatest track athlete in history.

Actor Jeff Bridges meditates daily in his sensory deprivation tank.

Shaquille O’Neal, Jim Carrey, Russell Brand, Graham Hancock, Michael Jackson, Alan Watts, Kris Kristofferson, Susan Sarandon, Michael Crichton, Jens Pulver, Commando Steve, Maz Compton and Neil Young all have used sensory deprivation tanks daily to improve their world.

So there is definitely something to getting a good night sleep that improves your overall well being.

[nicodiangeloing]

nico di angelo would be the kid at the very back of your church, fancy sunday clothes and all, curled up on the hard ass wooden pews in NREM 3 sleep

[onseneu]

Fazy snu - klucz do regeneracji 😴

Sen składa się z faz NREM i REM, które cyklicznie się powtarzają. Zrozumienie ich przebiegu pozwala na lepsze planowanie odpoczynku i poprawę jakości snu.

👉 Przeczytaj więcej na https://onsen.eu/blog-o-spaniu/fazy-snu 📖

[lichenes]

Let The Weak Suffer.

I saw this post and had to write something on this cuz the premise is absolutely fantastic ;_; obviously go read this first!!! send love to the author :D the phrase "he sounds like an elk in heat when he fucks" will forever be cemented in my brain tbh. anyway, hope you enjoy!! (feel free to send asks for cod boys :D) CW: nothing!! sfw wc: 451 .  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚ .  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚.  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚.  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚.  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚

They weren’t disruptive in any other way, you told yourself. They didn’t throw loud parties or cook any food that was too much olfactorily, yet when you coincidentally got out of your apartments at the same time you couldn’t quite look them in the eye. 

Being tormented this long was driving you crazy. Every night, when you were just on the brink of sleep, your borderline sadistic neighbours would start their mating sessions. It was like they could sense you falling into the NREM phase of your slumber each and every time. 

The night you heard your name being moaned you felt something break in you… and something primal emerge. You were ready to get out of your bed right that second and march yourself over to their place. 

You found yourself standing in front of your door, debating if you should go out and… talk to them. Look them in the eye and hope to find words that would describe the feelings you felt every time that god damned headboard would knock against the wall. 

You decided against it.

Soon enough, during one of your late night study sessions happening in your bed, you heard the familiar sounds of coitus happening not 30 centimeters away from you. You were tired and burned out from all the knowledge entering your brain and they were. Not. Helping. 

In your slippers and pyjamas you shuffled over to their apartment and rang the bell. You weren’t sure what they were trying to achieve with their lovemaking at such ungodly hours. 

You stood anxiously in front of the entrance and just when you turned back to walk into your own apartment, the door opened.

 “Oi.”

You froze in sudden terror. You were standing turned just enough to see him standing only in his boxers - the neighbor you’ve come to know as Simon. “Need something luv?” He challenged, leaning against the door frame with his arms crossed. You sighed. “Actually yeah.”

You walked closer to him and got obnoxiously close to his face, not missing hints of sweat in his aura, undoubtedly present, taunting. “I need you to stop fucking so loud.” He was taken aback by your phrasing for a second, expecting something more timid. He regained his composure as fast as he lost it.

He was just about to answer your not so unserious quip when John popped his head out of their bedroom and smiled at you brightly. “Who d’we have ‘ere?” He chuckled. “Bonnie decided to join us?” You sighed theatrically. “Hello John.” He waved at you with his shit-eating grin. 

You turned your attention back to Simon. “Please... consider?” You folded, you were pleading. And right then, he knew, they won. 

.  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚ .  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚.  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚.  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚.  * 　　 ✦ . 　⁺ 　 .⁺ 　　 ˚ masterlist

[transgenderer]

we care much more about REM sleep than NREM sleep, because (most) dreams are in REM sleep. but it seems that NREM sleep is in fact essential to life, you literally die without it, and REM sleep isn't! at least, there's no known disorder that deprives you of REM sleep until you die the way there is for NREM in fatal familial insomnia. but also, sleep rebound prioritizes NREM over REM, proportion of sleep in NREM is higher during sleep rebound. and medications that decrease REM sleep (including antidepressants) dont have obvious REM-related negative effects

[compneuropapers]

Interesting Papers for Week 10, 2025

Simplified internal models in human control of complex objects. Bazzi, S., Stansfield, S., Hogan, N., & Sternad, D. (2024). PLOS Computational Biology, 20(11), e1012599.

Co-contraction embodies uncertainty: An optimal feedforward strategy for robust motor control. Berret, B., Verdel, D., Burdet, E., & Jean, F. (2024). PLOS Computational Biology, 20(11), e1012598.

Distributed representations of behaviour-derived object dimensions in the human visual system. Contier, O., Baker, C. I., & Hebart, M. N. (2024). Nature Human Behaviour, 8(11), 2179–2193.

Thalamic spindles and Up states coordinate cortical and hippocampal co-ripples in humans. Dickey, C. W., Verzhbinsky, I. A., Kajfez, S., Rosen, B. Q., Gonzalez, C. E., Chauvel, P. Y., Cash, S. S., Pati, S., & Halgren, E. (2024). PLOS Biology, 22(11), e3002855.

Preconfigured cortico-thalamic neural dynamics constrain movement-associated thalamic activity. González-Pereyra, P., Sánchez-Lobato, O., Martínez-Montalvo, M. G., Ortega-Romero, D. I., Pérez-Díaz, C. I., Merchant, H., Tellez, L. A., & Rueda-Orozco, P. E. (2024). Nature Communications, 15, 10185.

A tradeoff between efficiency and robustness in the hippocampal-neocortical memory network during human and rodent sleep. Hahn, M. A., Lendner, J. D., Anwander, M., Slama, K. S. J., Knight, R. T., Lin, J. J., & Helfrich, R. F. (2024). Progress in Neurobiology, 242, 102672.

NREM sleep improves behavioral performance by desynchronizing cortical circuits. Kharas, N., Chelaru, M. I., Eagleman, S., Parajuli, A., & Dragoi, V. (2024). Science, 386(6724), 892–897.

Human hippocampus and dorsomedial prefrontal cortex infer and update latent causes during social interaction. Mahmoodi, A., Luo, S., Harbison, C., Piray, P., & Rushworth, M. F. S. (2024). Neuron, 112(22), 3796-3809.e9.

Can compression take place in working memory without a central contribution of long-term memory? Mathy, F., Friedman, O., & Gauvrit, N. (2024). Memory & Cognition, 52(8), 1726–1736.

Offline hippocampal reactivation during dentate spikes supports flexible memory. McHugh, S. B., Lopes-dos-Santos, V., Castelli, M., Gava, G. P., Thompson, S. E., Tam, S. K. E., Hartwich, K., Perry, B., Toth, R., Denison, T., Sharott, A., & Dupret, D. (2024). Neuron, 112(22), 3768-3781.e8.

Reward Bases: A simple mechanism for adaptive acquisition of multiple reward types. Millidge, B., Song, Y., Lak, A., Walton, M. E., & Bogacz, R. (2024). PLOS Computational Biology, 20(11), e1012580.

Hidden state inference requires abstract contextual representations in the ventral hippocampus. Mishchanchuk, K., Gregoriou, G., Qü, A., Kastler, A., Huys, Q. J. M., Wilbrecht, L., & MacAskill, A. F. (2024). Science, 386(6724), 926–932.

Dopamine builds and reveals reward-associated latent behavioral attractors. Naudé, J., Sarazin, M. X. B., Mondoloni, S., Hannesse, B., Vicq, E., Amegandjin, F., Mourot, A., Faure, P., & Delord, B. (2024). Nature Communications, 15, 9825.

Compensation to visual impairments and behavioral plasticity in navigating ants. Schwarz, S., Clement, L., Haalck, L., Risse, B., & Wystrach, A. (2024). Proceedings of the National Academy of Sciences, 121(48), e2410908121.

Replay shapes abstract cognitive maps for efficient social navigation. Son, J.-Y., Vives, M.-L., Bhandari, A., & FeldmanHall, O. (2024). Nature Human Behaviour, 8(11), 2156–2167.

Rapid modulation of striatal cholinergic interneurons and dopamine release by satellite astrocytes. Stedehouder, J., Roberts, B. M., Raina, S., Bossi, S., Liu, A. K. L., Doig, N. M., McGerty, K., Magill, P. J., Parkkinen, L., & Cragg, S. J. (2024). Nature Communications, 15, 10017.

A hierarchical active inference model of spatial alternation tasks and the hippocampal-prefrontal circuit. Van de Maele, T., Dhoedt, B., Verbelen, T., & Pezzulo, G. (2024). Nature Communications, 15, 9892.

Cognitive reserve against Alzheimer’s pathology is linked to brain activity during memory formation. Vockert, N., Machts, J., Kleineidam, L., Nemali, A., Incesoy, E. I., Bernal, J., Schütze, H., Yakupov, R., Peters, O., Gref, D., Schneider, L. S., Preis, L., Priller, J., Spruth, E. J., Altenstein, S., Schneider, A., Fliessbach, K., Wiltfang, J., Rostamzadeh, A., … Ziegler, G. (2024). Nature Communications, 15, 9815.

The human posterior parietal cortices orthogonalize the representation of different streams of information concurrently coded in visual working memory. Xu, Y. (2024). PLOS Biology, 22(11), e3002915.

Challenging the Bayesian confidence hypothesis in perceptual decision-making. Xue, K., Shekhar, M., & Rahnev, D. (2024). Proceedings of the National Academy of Sciences, 121(48), e2410487121.

[pruesgirlfriend]

MY HAND IS SLEEPIGN

Sleeping is a natural and necessary state of rest where the body and brain are engaged in vital restorative processes. It's crucial for overall health and well-being, impacting everything from weight management and heart health to mood and cognitive function. Most adults need around 7-8 hours of sleep per night, though individual needs can vary.

Why is sleep important?

Physical Health:

Sleep helps the body repair cells, restore energy, and regulate hormones and proteins. It's linked to managing weight, improving heart health, and reducing the risk of chronic conditions like type 2 diabetes.

Mental Health:

Sleep plays a crucial role in cognitive function, memory, and emotional regulation. It helps the brain process information and consolidate memories, impacting learning and attention span.

Immune Function:

Adequate sleep supports a healthy immune system, helping the body fight off germs and reduce the risk of illness.

Weight Management:

Insufficient sleep can lead to hormonal imbalances that increase appetite and cravings for unhealthy foods, potentially contributing to weight gain.

Mood and Behavior:

Sleep deprivation can negatively impact mood, increasing irritability and making it harder to manage stress and social situations.

Stages of Sleep:

Sleep is not a single, uniform state but rather a cycle of different stages:

Non-REM (NREM) Sleep:

This stage is divided into lighter and deeper phases, including light sleep and slow-wave sleep (deep sleep), where the body and brain prepare for rest and repair.

REM (Rapid Eye Movement) Sleep:

During REM sleep, brain activity is similar to wakefulness, and vivid dreaming often occurs.

Tips for Better Sleep:

Stick to a consistent sleep schedule: Go to bed and wake up around the same time each day, even on weekends, to regulate your body's natural sleep-wake cycle.

Create a relaxing bedtime routine: Make your bedroom a comfortable and peaceful space for sleep.

Limit caffeine and alcohol before bed: These substances can interfere with sleep.

Get regular exercise: Physical activity can improve sleep, but avoid strenuous exercise close to bedtime.

Expose yourself to sunlight during the day: This helps regulate your body's circadian rhythm.

Reduce blue light exposure in the evening: Blue light from screens can interfere with sleep.

Consider a melatonin supplement: Healthline recommends melatonin as a supplement for better sleep.

Consult a doctor if you have persistent sleep problems: They can help identify any underlying causes and recommend appropriate treatment.

[asteroiddb-612]

La ciencia detrás de los sueños

Cuando cerramos los ojos, nuestro cerebro no se apaga, ¡ni mucho menos! La noche es un viaje a través de distintas fases del sueño, cada una con su propio ritmo y propósito. Entenderlas nos ayuda a desvelar el misterio de por qué soñamos. El sueño se divide en dos grandes bloques: el sueño No REM (NREM) y el sueño REM (Movimiento Ocular Rápido). A lo largo de la noche, vamos pasando por ciclos de estas fases.

NREM: Un Sueño que se Profundiza

El NREM tiene tres etapas donde el sueño se va haciendo más profundo:

NREM1 (Ligero): Es cuando empezamos a desconectar del día. Las ondas cerebrales se hacen más lentas y a veces sentimos pequeños espasmos.

NREM2 (Medio): Aquí el cuerpo se relaja de verdad, el ritmo cardíaco baja y la temperatura también. Nuestro cerebro tiene picos de actividad que quizás ayudan a procesar lo vivido. Pasamos bastante tiempo en esta fase.

NREM3 (Profundo): Es el sueño más reparador para el cuerpo. Las ondas cerebrales son lentas y cuesta mucho despertarse. Aquí se liberan hormonas importantes para recuperarnos.

REM: La Película de Nuestros Sueños

Luego viene el REM, ¡la fase más curiosa!

Nuestro cerebro está casi tan activo como cuando estamos despiertos.

Nuestros ojos se mueven rápido bajo los párpados.

Aquí es donde soñamos las historias más vívidas, a veces raras, a veces emocionantes.

Nuestro cuerpo está paralizado para que no actuemos lo que soñamos.

En el REM, las zonas del cerebro que manejan las emociones y las imágenes se activan mucho. ¡Es como si se encendiera el proyector de nuestra mente!

Comprender estas etapas nos da una idea de lo ocupado que está nuestro cerebro mientras dormimos. En los siguientes posts, veremos cómo estas fases se relacionan con nuestros recuerdos y si realmente podemos aprender durmiendo.

[assorted-androids]

Seems even the Captain gets tired when there isn't anything going on. He's sat at his desk, arms across his chest with his eyes closed. It would be hard to tell if he was asleep or simply deep in thought honestly.

@swatcaptain

Huh... He hadn't seen David nod off at his desk before. A quick scan showed that the human was indeed resting; Stage 1 NREM sleep. The lightest sound could probably jolt the captain awake. Not that he would willingly disturb him. Connor leaned over just a bit to get a better look at him. He seemed quite docile like this. Nothing like the fierce Barghest his reputation and seeing him in action made him out to be.