Live data from Hacker News

Sleep duration is associated with brain structure and cognitive performance

onlinelibrary.wiley.com

101–110 of 336 posts

Re: Sleep duration is associated with brain structure and cognitive performance

#101
post #99

> The Pittsburgh sleep quality index (PSQI) is a self‐report questionnaire that assesses sleep quality and duration during the previous month I wonder why in this day and age where sleep monitoring tech is so widely available and routine, they still rely entirely on self-reporting?

Funding?

Re: Sleep duration is associated with brain structure and cognitive performance

#102
post #33
post #17

This stresses me out because I’ve struggled with sleep for quite some time. Feels awful.

Try Meditation. It really helps sleep quality. Another thing is not drinking caffeine AT ALL. My sleep quality got much better after I stopped drinking coffee. Strangely I can drink as much tea as I want but coffee makes me sleep badly.

Green tea (maybe others) has l-theanine which takes away the jittery feeling/anxiety of caffeine. Might be why. I really like caffeine + ltheanine pills.

Re: Sleep duration is associated with brain structure and cognitive performance

#103
post #96

Earlier quoted context omitted.

Try taking melatonin when you wake up too early (0.3 mg, from NootropicsDepot). Taken in the morning it pushes your wakeup time later. Won't make you fall asleep, but in a few days it shoulx be noticeable. I'm managing the same insomnia with very low dose of mirtazepine (1mg per evening) and the occasional ambien when I wake up.

How does taking melatonin in the morning help?

Small doses of melatonin shift your sleep cycle. In the morning if you want to delay your cycle, and in the evening if you want to advance it.

People use larger doses of melatonin as a hypnotic to make them fall asleep right away, but that's not the only use.

Re: Sleep duration is associated with brain structure and cognitive performance

#104
post #93

Earlier quoted context omitted.

The only thing that gets me out of bed is the day/night cycle bulbs my snake needs. I know I can automate turning off the night light and turning on the day bulb, but if I don't automate then I know she's depending on me when my alarm goes off so I have to physically get up, walk to the other room, and flip a couple switches. On my way back, it's very easy for me to sit down at the counter and eat the sandwich I made…

Have you tried switching places with the snake? You may want to set up automation first as you could find the snake not pushing the light button reliably every morning. Gradually dimming the bedroom light with a warm color temperature helps me get tired in the evening, and fading it in to a cold color temperature in the morning helps me wake up.

While I understand the point you want to make, the temperature in her tank is the same whether I flip the switches or not- so worst case scenario if I'm dead and don't flip the switches, she has to make do with ambient light from my window instead of light from a bulb directly overhead. This is in fact very safe for the snake, but still enough of a motivation for me.

Re: Sleep duration is associated with brain structure and cognitive performance

#105
post #84

Earlier quoted context omitted.

The only thing that gets me out of bed is the day/night cycle bulbs my snake needs. I know I can automate turning off the night light and turning on the day bulb, but if I don't automate then I know she's depending on me when my alarm goes off so I have to physically get up, walk to the other room, and flip a couple switches. On my way back, it's very easy for me to sit down at the counter and eat the sandwich I made…

What kind of snake do you keep?

She's a ball python! Just barely a year old and the sweetest noodle. She just barely became big enough for a 40 gallon tank.

Re: Sleep duration is associated with brain structure and cognitive performance

#106

I have a very weird problem/issue, maybe someone can help. In my school days I used to maintain a dream diary, where I would note down every dream I had after waking up. I stopped doing that when I got into college, but dreams never stopped and I never stopped analysing and trying to remember the dreams. Fast forward to present time (10 years from school), whenever I want to wake up i.e. after 6-7 hours of sleep I ca…

> It's like I am in a half-awake and half-sleepy state and I can't control myself to get fully awake, I know for sure I am not lucid dreaming. Are you having a form of sleep paralysis maybe? This "half awake, half asleep" state is one I know quite well. Here's a variety of sleep paralysis symptoms I've experienced over the years: - You're in the "real world", but you feel like you're not really awake - Limited contro…

I experienced something similar, maybe 5x in my life: I wake up mentally but I am asleep physically. So somehow I am trapped in my body awake. I can’t move any limb nor open my eyes. I start to panic and after some time I can move a bit, and then a bit more and so on. It’s quite stressful and freaky.

Re: Sleep duration is associated with brain structure and cognitive performance

#107
post #52

A few years ago, I stopped setting an alarm clock on a regular basis. Now, I just sleep as long as I need, which is usually 8-9h a day. I struggled with sleep for years, but now I sleep good.

If I don’t set an alarm I always wake up much earlier, and grab my phone in fear that it’s too late. Setting an alarm at a very reasonable tim (ie >8h after going to bed) helps me sleep calmly, knowing that I will not oversleep. It’s interesting how different minds work. :)

I only worry like that if I've got a flight in the morning, in which case I set multiple alarms.

Re: Sleep duration is associated with brain structure and cognitive performance

#109

I'm bipolar so I've gone through periods where I sleep 18 hours a day and periods where I sleep 2 hours a night if at all. Caffeine intake doesn't seem to matter. Medication and good mental hygiene helps a lot with this issue.

Is ineffectiveness of caffeine a symptom / indicator of a mental difference? I, too, am not phased in the slightest by caffeine and have had sleep schedules vary, though not as large of a range... just curious

You could have a genetic insensitivity to caffeine, or your body might be very used to it, but as another commenter mentioned an atypical response to stimulants is common with ADHD.

Re: Sleep duration is associated with brain structure and cognitive performance

#110

I have a very weird problem/issue, maybe someone can help. In my school days I used to maintain a dream diary, where I would note down every dream I had after waking up. I stopped doing that when I got into college, but dreams never stopped and I never stopped analysing and trying to remember the dreams. Fast forward to present time (10 years from school), whenever I want to wake up i.e. after 6-7 hours of sleep I ca…

>Fast forward to present time (10 years from school), whenever I want to wake up i.e. after 6-7 hours of sleep I can't stop myself from thinking about the dream. It's like I am in a half-awake and half-sleepy state and I can't control myself to get fully awake, I know for sure I am not lucid dreaming.

You're lucky. It takes me much practice and cultivation to be able to have that kind of clarity in dream retention.

I ask that people don't talk to me after I wake up, and I keep a journal close, and I work at it, and I'm still able to attain anything like what you're describing only sometimes.

In programming terms, in your sleep, your brain runs a full reference check against all nodes, and the ones that fired the brightest are what you're seeing when you wake up.

Don't let this valuable information go to waste.

Post reply on HN