There’s possibly some relation there, but I have hypnic jerks almost every night and EHS every now and then and as far as I’m aware I do not have synesthesia.
I used to have that when I was a teenager. About one out every ten times I was falling asleep just at the moment I drifted off I’d feel this crazy big pop that went from deep behind my right eye to the top right part of my skull. Sometimes it was more like a noise, sometimes it was more like a physical impact, like somebody bounced a golf ball off of my skull. It was really annoying. It started to happen less and less as I got older though. It pretty much went away completely by the time I was in my late 20s.
I get that as well! When it’s not a horrifyingly loud boom, it’s like an increasingly loud wind sound. When I get that one, it’s accompanied by my body feeling like I’m in a wind vortex being whipped around every direction. Makes me scared to go back to sleep.
I absolutely hate my upstairs neighbors. Even worse when they have a party up until 4 am.
The other day though my smoke alarm threw me out of the bed by violently blaring three times. Never had a false alarm before but always thought it would be if I maybe burn something in the kitchen by accident, not when there's absolutely nothing going on while I sleep.
Hmmm, never really thought about this, but I have this happen every now and then. From what I remember it sounds like a sudden snap or click, but I don’t have concrete memory of the sound. Also with a bright flash of light. Just a sudden sensory spike. I don’t have good memories of it, because it usually happens just when I really start falling asleep and at that point memory usually isn’t working well. It’s also often accompanied with my muscles suddenly activating, basically jolting me awake. Heart rate spikes as well, but I cannot really remember any instance where it was more than a small nuisance. I always assumed that it was just a bit of a race condition in the transition to the deeper sleep state
Maybe time to write an issue to the development team for the brain OS :p
Wait, is this my “nightmare sound”? When I have nightmares (fairly rarely, but I’ve gone through times when they were more common) there’s a sound that goes with them, and builds in intensity as the fear comes to a crescendo. It’s like a high-pitched whine that starts as a hum (like tinnitus) and slowly grows to ear-splitting intensity, except it’s more like head-splitting because it feels like the origin is in the center of my head. And I say “feels” intentionally because it’s not just a sound, it feels like my consciousness is vibrating apart.
Often the actual content of my nightmares is mostly abstract (like worrying about why the room is dark, or feeling followed but not knowing by what) and the terror is completely disproportionate to the events, but directly proportional to the intensity of the sound.
Uh, for me it’s firmly inside the dream though, I wouldn’t classify it as a hallucination. When I was taking antidepressants I used to have hallucinations wake me up—like waking up because I heard my mom talking, when she was in a different state—but that felt different. That was like hearing someone in the room with you and having it pull you out of whatever dream you were having. The “nightmare sound” is inside the nightmare, it isn’t what wakes me up.
I don’t know if this qualifies, but I go on call for my job and get woken up sometimes. I use a really annoying alert tone to make sure I wake up. Unfortunately, some times when I’m not on call I hallucinate hearing that tone as I’m dozing off or in a dead sleep and it makes me shoot straight up in bed.
I have ADHD and am a night owl, so that kind of time management was always super stressful for me, to the point that I would set up a dozen or so alarms so I would wake up in the morning. After some time it was so ingrained that I sometimes heard the alarm sound randomly when sleeping, always causing me to be wide awake in the middle of the night with racing pulse.
I’ve been having them on and off for as long as I can remember. I seem to notice I suffer them more often when sleep deprived and also when playing long hours of videogames (or both).
For why this is happening to me, I’ve narrowed this down to the following: snoring (I start snoring as soon as my eyes close), dreams (I have “imaginative” dreams, a lot of nightmares) and the last reason being lack of sleep to which I think I’ve actually heard the explosion but it was a dream.
On my TI-83 plus, a fellow students and my calculator were matching rand(int) and it was amazing. Random wasn’t really random. I thought it’d be based on some sort of hidden internal clock.
True randomness is really really hard to do in software; bigger CPUs often have hardware random number generators that exploit some sort of quantum or otherwise non-determanistic phenomena, but in software the best you can do is pseudo-random. These are algorithms that generate a sequence of randomly distributed numbers, but in a deterministic way - from a given starting state, it will always generate the same sequence of numbers. Good algorithms are designed to make it hard to infer the starting state just by observing the sequence (if you can do that, you can run the algorithm in parallel and predict the next number), but that’s an active area of research.
At a guess, the calculator was programmed to initialise the random number generator from something that it is hard for the user to control (milliseconds since power on would be a good one) the first time you used it, but maybe TI got lazy and just initialised it to a constant value
fun fact: there are graphing calculator emulators, even modern tinspire cx and cx2 models can be emulated (firebird emu) (as well as ti 83/84 etc, although obviously a different emulator is used for those models)
American kids and their damn fancy calculators. I got through a technician degree in Electronics and a Grad degree in Robotics with a Casio FX82. It can display two lines with simple letters and numbers, no graphs. It also stores up to 6 numbers in memory.
This is a stupid take. Try that on Windows 7's 3-number calculator (basically replicated in Windows 10's standard mode calculator) and see what happens: 8+9 will get calculated to 17 the moment you hit the + after 9, and 17 gets stored in the first memory.
It’s… not a take… it’s a dumb joke… was trying to make the equation dumb enough that it was obvious, but apparently it was not clear enough. Holy what are these responses
en.wikipedia.org
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