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Study reveals how, when a synapse strengthens, its neighbors weaken

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Re: Study reveals how, when a synapse strengthens, its neighbors weaken

#41
post #35

So this is how Eg brainwashing works? Repeating a message strengthens the new pathways until the old connections are too weak to fire?

Arguably, a single message would only affect a single pathway.

AFAIK a single message causes a giant electrical and chemical thunderstorm in the brain, not only one excited single pathway?

Re: Study reveals how, when a synapse strengthens, its neighbors weaken

#42
post #2

The naive conclusion is to avoid learning in any form in order to keep all the synapses in optimal state. Rather disappointing.

Regardless of one’s general level of intelligence, there is that age-old adage of a trade-off between book smarts and street smarts, or any other niche skill. Forgetting, and the resulting ignorance, is part of learning. Perhaps that’s why people in modern societies feel unhappier than those in poorer, less developed societies. Still, any society has certain forms of learning with outsized benefits that make them wor…

>Perhaps that’s why people in modern societies feel unhappier than those in poorer, less developed societies.

I have heard this before and would really question if it is true.

Has anyone studied this?

Re: Study reveals how, when a synapse strengthens, its neighbors weaken

#43
post #39
post #37

Earlier quoted context omitted.

I don't know how babies learn to initially use words but after that entails 99% supervised learning through school IMO nowadays. I would even argue that most new economic growth is the also the result of general supervised learning (aka, learning from others because the wealth of human knowledge is way more than anyone can learn in a million lifetimes and so the economic growth comes from continuously combining new i…

But we aren't beating kids when they get facts wrong and we aren't giving them candy when they are right. So studying how the reward signal is computed should be interesting.

Beating kids and giving them candy is way on the extreme side of reinforcement. Having good grades be praised by teachers/parents and bad grades be associated with disappointment is already pretty good since humans are highly receptive to other people's emotions.

Re: Study reveals how, when a synapse strengthens, its neighbors weaken

#44
post #43
post #39

Earlier quoted context omitted.

But we aren't beating kids when they get facts wrong and we aren't giving them candy when they are right. So studying how the reward signal is computed should be interesting.

Beating kids and giving them candy is way on the extreme side of reinforcement. Having good grades be praised by teachers/parents and bad grades be associated with disappointment is already pretty good since humans are highly receptive to other people's emotions.

Yeah I agree! I'm just saying there's gotta be a lot of intricate machinery to make such subtle reinforcements work.

Re: Study reveals how, when a synapse strengthens, its neighbors weaken

#45
post #41

Earlier quoted context omitted.

Arguably, a single message would only affect a single pathway.

AFAIK a single message causes a giant electrical and chemical thunderstorm in the brain, not only one excited single pathway?

You are right of course. But because a trivial message has many "layers" of "messages", according to semantic theory, it's often a single lie in a whole message packet.

Re: Study reveals how, when a synapse strengthens, its neighbors weaken

#46
post #43
post #39

Earlier quoted context omitted.

But we aren't beating kids when they get facts wrong and we aren't giving them candy when they are right. So studying how the reward signal is computed should be interesting.

Beating kids and giving them candy is way on the extreme side of reinforcement. Having good grades be praised by teachers/parents and bad grades be associated with disappointment is already pretty good since humans are highly receptive to other people's emotions.

Really we are being too static in the thinking about it. Supervised learning can essentially be done by one brain region supervising another that is being trained. It doesn't have to be outside the skull.
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