Aren’t the eyes teeeechnically part of the brain?
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.
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
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.
I Upvoted just for the tapioca mention
Fun fact, the average adult brain also has a credit cards worth of plastic inside. So that bacon has some company!
Are you joking?
Sadly, no. About 0.5% of our brain mass is microplastics.
https://pirg.org/articles/new-research-finds-plastic-in-human-brains/
Once I put my head up to the EFTPOS machine and the payment actually went through
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.
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…
CARD DECLINED
Contrary to popular belief, we’re all profoundly stupid. Even the smartest among us spend enormous effort in their struggle to comprehend our surroundings.
At least half of us are below average.
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.
You mean the median? :3
It can’t be that many.
It’s not. I assure you there are far more outliers on the low end.
I endeavour to be as stupid as possible so more people can be above average.
America thanks you for your service.
But I’m sure there are more people with 200+ IQ than with <0.
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?
But poltergeist cat is real!
Maybe the brain will one day invent something more tiresome than watching reddit users exchange tautologies.
I’m doing my part!
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.
I’m an ugly bag of mostly water.
Mmm, forbidden bacon
Prions are just like seasoning right?
They’re made out of meat.
All the way through?
Fitting, really, to be a dream to meat.
You momma is FAT (with water and salt)
File Allocation Table?
Yeah your momma’s so big she’s not even FAT she’s exFAT and can store files up to 120 petabytes
Yo mama’s like exFAT; she’s got no permissions so anyone can access anything and her low requirements mean she gets embedded everywhere.
OP has a baby in their head
Brain uses more wattage than a lightbulb, unless we are counting incandescent bulbs because it makes the stat seem more impressive.
That phrase first came out when incandescent bulbs were the most common, so they consumed like 60W vs 7W for an equivalent LED bulb. The brain is somewhere around 20W.
I don’t give a damn about Lemmy points, but you just said essentially the same thing as the above commenter and the Lemmy points are diametrically opposed. I love it!
Yeah and LED bulbs were the norm 15-20 years ago. my point is this is a repost of a Reddit repost of a Tumblr comment that was reposting a factoid that was already wrong when it was originally posted 5-6 years ago.
Your timeline is incorrect. 15 years ago was 2009, when CFLs were most common. A 60W equivalent CFL was 13W and 100W equivalent was 23W. My house was still mostly incandescent bulbs with some CFLs for bulbs that had died and weren’t on a dimmer. Commercial LED bulbs intended for residential use only started being released in 2009-2010 with incentive from the US government.
Ok, not in the US so idk. the last CFL bulb I bought was long before 2009.
Either way, the brain still uses more power than a 13W CFL, and the tumblr post is from 2018, and the Reddit post is even more recent. “It would have been technically correct if it was posted 20 years ago” doesn’t really change the fact that it’s not true anymore
It was estimated back when incandescent was standard.
Keep in mind that’s not accounting for energy consumed from neurons burning oxygen, which accounts for 20% of a human body’s consumption.
20% of your bodies energy is about 20 Watts.
Normal-weight humans burn about 2200 kilocalories a day, which is about 9.2 megajoules. There are 8640 seconds in a day, so that works out to roughly 100 joules per second, or 100 Watt. 20% of that is 20 Watts for the brain.
That’s rest consumtion tho.
Well done. So even added to the electrical consumption it’s less than an incandescent bulb. Incredible.
