raztvi

Day dreamer, night thinker

[Aakash Gupta @aakashgupta]

This is one of the most important studies in sleep science.

Van Dongen et al. ran the experiment that changed how we understand chronic sleep restriction. They had subjects sleep 4h, 6h, or 8h nightly for 14 days, testing cognitive performance every 2 hours.

The 6h group’s reaction time deficits by day 14 matched subjects who had been awake for 24 hours straight. The 4h group? They performed like someone awake 48 hours.

But here’s what makes this study terrifying.

The Stanford Sleepiness Scale ratings in Panel B plateau after day 3-4. Subjects stopped feeling more tired even as their cognitive performance continued deteriorating through day 14. Your subjective experience of fatigue is a lagging indicator that eventually just… stops updating.

This explains why chronic undersleeping feels sustainable. You’ve adapted to feeling tired. Your prefrontal cortex hasn’t adapted to being impaired.

The PVT (Psychomotor Vigilance Task) in Panel A measures lapses in attention. These are the moments where you’re staring at a screen and your brain simply checks out for 500ms. Every additional day of 6h sleep adds more lapses. The curve never flattens.

Panel C and D show working memory and processing speed. Same pattern: continuous degradation with no subjective awareness.

The practical implications:

If you’re sleeping 6h and think you’re functioning fine, you’ve lost the internal calibration to know you’re not. The subjects in this study would have told you they felt “okay” while performing like they’d pulled an all-nighter.

For anyone doing cognitively demanding work, this means you cannot trust how you feel. You need to track objective markers: error rates, decision latency, problem-solving throughput.

Sleep need is biological, not negotiable. Most adults require 7-9 hours, and the research shows no population-level adaptation to chronic restriction. “I only need 6 hours” is almost always “I’ve forgotten what baseline cognition feels like.“

[raztvi @raztvi]

@NigmaGalaxy Can we have an english stream non-delayed?

[raztvi @raztvi]

@Jaxweah @grok Lets go

[raztvi @raztvi]

@LucianGuia Pai tipul e cetatean american. Si victima e o imigranta, refugiata ucraineana. Ai sursa si de la ABC si de la FOX
https://t.co/vEyobC2oXt
https://t.co/FtDdhy6WGY
Deci cum promoveaza USR violenta?
Eu parca stiu un senator AUR care a instigat contra migrantilor.

[raztvi @raztvi]

@StatsPerform @NancyAHensley1 @StatsPerform about Romanian 1st League match FCSB - Univ. Craiova (https://t.co/WCMt5ZwcC2), opta shows 16-10 fouls, but other sites (sofascore, https://t.co/g7yMnU9Xl4 ,LPF is the official gov. org. of Romanian Football) show other statistics. Could this match be rechecked?

[raztvi @raztvi]

@OptaAnalyst @OptaAnalyst about Romanian 1st League match FCSB - Univ. Craiova (https://t.co/IxRc5QjMrl), opta shows 16-10 fouls, but other sites (sofascore, https://t.co/g7yMnU9Xl4 ,LPF is the official gov. org. of Romanian Football) show other statistics. Could this match be rechecked?

[raztvi @raztvi]

@AndreiCaramitru Da, saracii dezvoltatori care au autorizatie pentru p+3 si fac p+7+m+a+b+c si se extind pe spatiul public si apoi plang ca sunt persecutati de primarie :(

[raztvi @raztvi]

@ValentinNebune2 @Ade_linPetrisor E ca si cum ar veni razboiul in Romania, tu cauti azil in Ungaria/Polonia/etc si aia te iau la suturi ca l-au vazut ei pe Becali in Maybach la Monaco si deci n-ai nevoie de ajutor 🙄🙄

[raztvi @raztvi]

@AndreiCaramitru Romania and infrastructure being done😅

[raztvi @raztvi]

@GalaxyRacerSEA @TeamSMGofficial @FNATIC @GalaxyRacerSEA
can SMG still qualify if they win?

[raztvi @raztvi]

@menetz @Sorin_Patiu Nu lol. Nu toti barbatii gandesc ca e ok sa fii atras de minore.
Nu e ok sa te gandesti ca te duci la mare sa vezi la fete buci si sani si daca vreuna are celulita/vergeturi sa nu mai vina pentru ca te deranjeaza pe tine.

[raztvi @raztvi]

@gbuhnici Folosesc twitter mai mult sa citesc, nu sa interactionez. Dar irelevant zic eu, chiar daca eram bot, intrebarea mea e inca valida

[raztvi @raztvi]

@monoranu A doua intrebare e, atunci cand esti plecat si vin sa faca curatenie in camera si vad ca tu ai scos lenjeria de sub saltea, de ce o baga la loc?

[raztvi @raztvi]

@Ade_linPetrisor Asa buna treaba fac aia, de parca viata lor depinde de asta 😅

[raztvi @raztvi]

@rizkyrakhmat @NikoDOTA @keepingitKyle Then please explain me Mr. Immortal top 1000 rank why is eblade there better than abysal/bkb? How is that a game winning item?

[raztvi @raztvi]

@KaelTheGod @NikoDOTA @keepingitKyle In what world is eblade the item choice there? :) Why would you ever eblade into mana void into staring at that target cuz he is in ghost form and you can't attack him (which happened with void spirit in the jungle)? Look at nisha's AM build vs team tickless

[raztvi @raztvi]

@NikoDOTA @keepingitKyle @NikoDOTA If you wanna be considered a superstar, then do your best until the end and don't clown and don't play seriously just so your liquid friends can win and get a better position. Yes, I'm talking about e-blade instead of abysal/bkb 🤡🤡nice intentional throw

[raztvi @raztvi]

@NikoDOTA Hey @NikoDOTA how much did @TeamLiquid
pay you to throw the game and buy ethereal on AM instead of abysal? 🤡🤡🤡
Nice "try even harder", you tried your hardest to not win. One less fan for @theAllianceGG and you

[raztvi @raztvi]

@Sawrad Au vrut sa faca bani repede intr-un domeniu in care nu se pricep si acum se cred victimr lol. Pai ca sa faci tu bani, altu tre sa piarda