this post was submitted on 22 Nov 2024
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Science Memes

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[–] [email protected] 30 points 1 day ago* (last edited 1 day ago) (2 children)

If we are talking facts, neurons don't use electricity, it's a cascade of released ion potentials. Thats why nerves are so much slower than electrical signals.

[–] [email protected] 11 points 21 hours ago (1 children)

He should have said "power" not electricity

Humans dissipate power in the range of old tungsten lamps - on the order of 100W at rest, brains use about 20% of that, so 20W - about the same as an energy efficient globe

[–] Kbobabob 2 points 2 hours ago (1 children)

Hi. I'm just curious what part of the world you're from that light bulbs are called a globe?

Cheers.

[–] [email protected] 1 points 1 hour ago (1 children)

Yeah we call them light globes in Australia, as well as bulbs

[–] Kbobabob 1 points 1 hour ago

Thanks. Never heard it before

[–] [email protected] 13 points 23 hours ago

It's really both, neurons communicate electrochemically. Neurons establish a voltage difference across their membrane, typically positive outside, negative inside, by concentrating ions on one side or the other. In a single neuron, the action potential (signal) results in the electric polarity of the cell membrane switching to negative outside, positive inside, with the change in gradient cascading down the length of the axon as ions are allowed to flow across the membrane by voltage-gated ion channels. After depolarization, ions are actively and selectively pumped to either side of the membrane, repolarizing it.

There's a lot more to it than that but it's 100% charge dependent. The change in charge is mediated by the flow of ions across a membrane instead of the flow of electrons through a conductor, hence why it's slower.

[–] [email protected] 5 points 23 hours ago (1 children)

I Upvoted just for the tapioca mention

[–] MintyFresh 2 points 56 minutes ago

Tapioca does sound good.

[–] [email protected] 51 points 1 day ago (1 children)

Fun fact, the average adult brain also has a credit cards worth of plastic inside. So that bacon has some company!

[–] TrickDacy 5 points 1 day ago (1 children)
[–] [email protected] 38 points 1 day ago (2 children)
[–] Agent641 11 points 1 day ago (1 children)

Once I put my head up to the EFTPOS machine and the payment actually went through

[–] voracitude 10 points 1 day ago

EFTPOS is the fastest payment system in the world for identifying Australians on the internet. If you need to camouflage, you can use "card reader" instead. I don't know when you'd need to camouflage like that, but these are interesting times.

[–] [email protected] 32 points 1 day ago* (last edited 1 day ago) (1 children)

Additionally, the average brain is about 1300 grams. 0.5% of 1300 is 6.5 grams, and plastic credit cards weigh roughly 5 grams.

0.5% is really hard for me to visualize. A credit card in everyone's brain is unfortunately easy.....

[–] [email protected] 6 points 23 hours ago
CARD DECLINED
[–] Heavybell 1 points 19 hours ago

Aren't the eyes teeeechnically part of the brain?

[–] [email protected] 67 points 1 day ago (1 children)

Contrary to popular belief, we're all profoundly stupid. Even the smartest among us spend enormous effort in their struggle to comprehend our surroundings.

[–] esc27 31 points 1 day ago (3 children)

At least half of us are below average.

[–] [email protected] 9 points 1 day ago

If we're talking about IQ, than no. An IQ between 85 and 115 is considered average. This entails 68% of the population. So, only 32% of people are not average and only 16% are below average.

[–] Eheran 29 points 1 day ago

You mean the median? :3

[–] FinalRemix 12 points 1 day ago (1 children)
[–] [email protected] 13 points 1 day ago (2 children)

It's not. I assure you there are far more outliers on the low end.

[–] [email protected] 6 points 1 day ago (1 children)

I endeavour to be as stupid as possible so more people can be above average.

[–] [email protected] 4 points 23 hours ago

America thanks you for your service.

[–] Knock_Knock_Lemmy_In 1 points 1 day ago (1 children)

But I'm sure there are more people with 200+ IQ than with <0.

[–] [email protected] 2 points 23 hours ago* (last edited 23 hours ago) (1 children)

I understand that you're saying there are more incredible geniuses than full on retards.

However, IQ scores are a normal distribution with an arbitrarily defined mean of 100 and a standard deviation of 15.

So, IQ scores of 0 or 200 are both 6.6 standard deviations from the mean. If IQ is truly a normal distribution, you'd expect the number of people with IQ scores <= 0 and the number with scores >= 200 to be exactly the same, simply because this is how the scores are defined.

If you try to look up what proportion of the population falls outside 6.6 standard deviations, the z-tables don't go out this far. It's essentially 0% (0/100) but how many is it out of 8 billion?

[–] Knock_Knock_Lemmy_In 2 points 2 hours ago

If IQ is truly a normal distribution

It's not. Here's a list containing a number of people above 200.

However, no-one has a negative IQ.

[–] [email protected] 61 points 1 day ago (2 children)

Maybe the brain will one day invent something more tiresome than watching reddit users exchange tautologies.

[–] [email protected] 51 points 1 day ago (1 children)

I often describe myself as "3lbs of mostly fat piloting a meat mech." To the point that my wife sometimes refers to injuries as malfunctions/damage to her meat mech.

[–] [email protected] 5 points 1 day ago

I’m an ugly bag of mostly water.

[–] [email protected] 27 points 1 day ago (1 children)
[–] PlantDadManGuy 8 points 1 day ago

Prions are just like seasoning right?

[–] weariedfae 4 points 1 day ago

But poltergeist cat is real!

[–] RubberElectrons 18 points 1 day ago (2 children)
[–] FlyingSquid 1 points 1 hour ago (1 children)

I really don't like that version because they just look like us and I don't think they should. Especially with the part about tongues. It doesn't really make sense.

This is the original short story by Terry Bisson that it's based upon.

https://www.mit.edu/people/dpolicar/writing/prose/text/thinkingMeat.html

I don't know if anyone has done one with CG robots or something, but they should. Bisson must have been inspired by The Cyberiad by Stanislaw Lem, one of my all-time favorite books. Incidentally, I recently found out that book was an inspiration for Will Wright when he came up with SimCity.

[–] RubberElectrons 2 points 52 minutes ago

For what it's worth, it's a bit nostalgic seeing that "look" of 90s film making and I grew up sorta near that diner.

It was a student film as well, and I appreciate how both good and bad the acting is. Why would the one with authority be in a band-leader getup, if not because in their fractured understanding of us it would make sense?

Dunno, lots of small interesting touches to it.

[–] [email protected] 5 points 1 day ago (1 children)
[–] RubberElectrons 5 points 1 day ago

Fitting, really, to be a dream to meat.

[–] [email protected] 6 points 1 day ago (1 children)

You momma is FAT (with water and salt)

[–] espentan 12 points 1 day ago (1 children)
[–] kautau 9 points 1 day ago (1 children)

Yeah your momma’s so big she’s not even FAT she’s exFAT and can store files up to 120 petabytes

[–] [email protected] 6 points 1 day ago

Yo mama's like exFAT; she's got no permissions so anyone can access anything and her low requirements mean she gets embedded everywhere.

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