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Critical brain hypothesis: A physical theory for when the brain performs best

quantamagazine.org

11–20 of 43 posts

Re: Critical brain hypothesis: A physical theory for when the brain performs best

#11
post #7

If you look for something in a complex system, and you look hard enough, you're probably going to find it. The example of epilepsy might just be seeing certain behavior through the lens of the theory. Unfortunately, the article fails to give us any hard definition of criticality.

Amen. I think the generosity of complex systems for different interpretations is the bane of comprehensive model for neuroscience.

Re: Critical brain hypothesis: A physical theory for when the brain performs best

#15
post #12

Wonder if there's a connection with Ballmer Peak.

I doubt Ballmer Peak needs to reach as far down as neuroscience to find a basis: developers tend to overthink, and alcohol de-thinks.

The book Drunk spends a lot of time on this very point:

From a long term health perspective, alcohol is very bad or even toxic for humans. That being said, it's been used throughout history for short term benefits ranging from creativity to facilitating social interactions. On the creativity side, the author explicitly states how drinking alcohol can help adults activate child like curiosity and thinking. The idea being that the adult mind has too many inhibitions and the alcohol helps lower those for both internal and external scenarios.

0 - https://www.amazon.com/Drunk-Sipped-Danced-Stumbled-Civiliza...

Re: Critical brain hypothesis: A physical theory for when the brain performs best

#16
post #3

"The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong." Isn't this just about as obvious as the fact that traffic flows best when traffic lights are neither always red nor always green?

"The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong." is actually a tautology, no?

Without a crisp explanation for what "too weak" or "too strong" mean, this is just saying "Neural networks work best when connections couldn't be changed to make them work better."

Re: Critical brain hypothesis: A physical theory for when the brain performs best

#17
post #3

"The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong." Isn't this just about as obvious as the fact that traffic flows best when traffic lights are neither always red nor always green?

"The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong." is actually a tautology, no? Without a crisp explanation for what "too weak" or "too strong" mean, this is just saying "Neural networks work best when connections couldn't be changed to make them work better."

It's not a tautology, because it isn't clear that there is some threshold beyond which connections are too weak or too strong. I might think that more connections are more good, for instance.

Re: Critical brain hypothesis: A physical theory for when the brain performs best

#18

Earlier quoted context omitted.

"The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong." is actually a tautology, no? Without a crisp explanation for what "too weak" or "too strong" mean, this is just saying "Neural networks work best when connections couldn't be changed to make them work better."

It's not a tautology, because it isn't clear that there is some threshold beyond which connections are too weak or too strong. I might think that more connections are more good, for instance.

So it might not be possible to reach a state with connections that are "too strong" but logically if you could you'd have to define them by suboptimal performance.

Re: Critical brain hypothesis: A physical theory for when the brain performs best

#19

Earlier quoted context omitted.

I doubt Ballmer Peak needs to reach as far down as neuroscience to find a basis: developers tend to overthink, and alcohol de-thinks.

The book Drunk spends a lot of time on this very point: From a long term health perspective, alcohol is very bad or even toxic for humans. That being said, it's been used throughout history for short term benefits ranging from creativity to facilitating social interactions. On the creativity side, the author explicitly states how drinking alcohol can help adults activate child like curiosity and thinking. The idea be…

This is my experience. I tend to "freeze up" when faced with a blank page. It becomes impossible to just start, because I get bogged down in planning or trying to predict future roadblocks.

One glass of wine and I tend to just say "eff it" and start banging away at the keyboard.

Re: Critical brain hypothesis: A physical theory for when the brain performs best

#20

Earlier quoted context omitted.

"The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong." is actually a tautology, no? Without a crisp explanation for what "too weak" or "too strong" mean, this is just saying "Neural networks work best when connections couldn't be changed to make them work better."

It's not a tautology, because it isn't clear that there is some threshold beyond which connections are too weak or too strong. I might think that more connections are more good, for instance.

Suppose your counter example would be like “superconductivity works best at temperatures that are neither too hot nor too cold” or “Carnot efficiency of heat engines is at its maximum when the temperature delta is neither too large nor too small”.
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